0001467858-21-000037 | 10-K | XBRL Viewer

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Cover Page - USD ($) $ in Billions	12 Months Ended
Cover Page - USD ($) $ in Billions	Dec. 31, 2020	Jan. 29, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	001-34960
Entity Registrant Name	GENERAL MOTORS COMPANY
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-0756180
Entity Address, Address Line One	300 Renaissance Center,
Entity Address, City or Town	Detroit,
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48265
City Area Code	313
Local Phone Number	667-1500
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	GM
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 36.1
Entity Common Stock, Shares Outstanding		1,440,912,820
Documents Incorporated by Reference	Portions of the registrant's definitive Proxy Statement related to the Annual Stockholders Meeting to be filed subsequently are incorporated by reference into Part III of this Form 10-K.
Entity Central Index Key	0001467858
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Income Statements - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net sales and revenue
Automotive	$ 108,673	$ 122,697	$ 133,045
Total net sales and revenue (Note 3)	122,485	137,237	147,049
Costs and expenses
Automotive and other cost of sales	97,539	110,651	120,656
Automotive and other selling, general and administrative expense	7,038	8,491	9,650
Total costs and expenses	115,851	131,756	142,604
Operating income	6,634	5,481	4,445
Total interest expense	4,121	4,423	3,880
Interest income and other non-operating income, net (Note 19)	1,885	1,469	2,596
Equity income (Note 8)	674	1,268	2,163
Income before income taxes	8,095	7,436	8,549
Income tax expense (Note 17)	1,774	769	474
Income from continuing operations	6,321	6,667	8,075
Loss from discontinued operations, net of tax (Note 22)	0	0	70
Net income	6,321	6,667	8,005
Net loss attributable to noncontrolling interests	106	65	9
Net income attributable to stockholders	6,427	6,732	8,014
Net income attributable to common stockholders	$ 6,247	$ 6,581	$ 7,916
Earnings per share (Note 21)
Basic earnings per common share – continuing operations (in dollars per share)	$ 4.36	$ 4.62	$ 5.66
Basic loss per common share – discontinued operations (in dollars per share)	0	0	0.05
Basic earnings per common share (in dollars per share)	$ 4.36	$ 4.62	$ 5.61
Weighted-average common shares outstanding – basic (in shares)	1,433	1,424	1,411
Diluted earnings per common share – continuing operations (in dollars per share)	$ 4.33	$ 4.57	$ 5.58
Diluted loss per common share – discontinued operations (in dollars per share)	0	0	0.05
Diluted earnings per common share (in dollars per share)	$ 4.33	$ 4.57	$ 5.53
Weighted-average common shares outstanding – diluted (in shares)	1,442	1,439	1,431
Automotive
Net sales and revenue
Automotive	$ 108,673	$ 122,697	$ 133,045
Costs and expenses
Total interest expense	1,098	782	655
GM Financial
Net sales and revenue
Total net sales and revenue (Note 3)	13,812	14,540	14,004
Costs and expenses
GM Financial interest, operating and other expenses	$ 11,274	$ 12,614	$ 12,298

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 6,321	$ 6,667	$ 8,005
Other comprehensive income, net of tax (Note 20)
Foreign currency translation adjustments and other	(523)	(6)	(715)
Defined benefit plans	(1,795)	(2,122)	(221)
Other comprehensive loss, net of tax	(2,318)	(2,128)	(936)
Comprehensive income	4,003	4,539	7,069
Comprehensive loss attributable to noncontrolling interests	92	76	15
Comprehensive income attributable to stockholders	$ 4,095	$ 4,615	$ 7,084

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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+ Details

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 19,992	$ 19,069
Marketable debt securities (Note 4)	9,046	4,174
Accounts and notes receivable (net of allowance of $224 and $201)	8,035	6,797
Inventories (Note 6)	10,235	10,398
Other current assets (Note 4; Note 11 at VIEs)	7,407	7,953
Total current assets	80,924	74,992
Non-current Assets
Equity in net assets of nonconsolidated affiliates (Note 8)	8,406	8,562
Property, net (Note 9)	37,632	38,750
Goodwill and intangible assets, net (Note 10)	5,230	5,337
Equipment on operating leases, net (Note 7; Note 11 at VIEs)	39,819	42,055
Deferred income taxes (Note 17)	24,136	24,640
Other assets (Note 4; Note 11 at VIEs)	7,264	7,346
Total non-current assets	154,270	153,045
Total Assets	235,194	228,037
Current Liabilities
Accounts payable (principally trade)	19,928	21,018
Accrued liabilities (Note 12)	23,069	26,487
Total current liabilities	79,910	84,905
Non-current Liabilities
Postretirement benefits other than pensions (Note 15)	6,277	5,935
Pensions (Note 15)	12,902	12,170
Other liabilities (Note 12)	13,447	13,146
Total non-current liabilities	105,607	97,175
Total Liabilities	185,517	182,080
Commitments and contingencies (Note 16)
Equity (Note 20)
Common stock, $0.01 par value	14	14
Additional paid-in capital	26,542	26,074
Retained earnings	31,962	26,860
Accumulated other comprehensive loss	(13,488)	(11,156)
Total stockholders’ equity	45,030	41,792
Noncontrolling interests	4,647	4,165
Total Equity	49,677	45,957
Total Liabilities and Equity	235,194	228,037
GM Financial
Current Assets
GM Financial receivables, net (Note 5; Note 11 at VIEs)	26,209	26,601
Non-current Assets
GM Financial receivables, net (Note 5; Note 11 at VIEs)	31,783	26,355
Current Liabilities
Short-term debt and current portion of long-term debt (Note 13)	35,637	35,503
Non-current Liabilities
Long-term debt (Note 13)	56,788	53,435
Automotive
Current Liabilities
Short-term debt and current portion of long-term debt (Note 13)	1,276	1,897
Non-current Liabilities
Long-term debt (Note 13)	$ 16,193	$ 12,489

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Automotive
Allowance for doubtful accounts and notes receivable	$ 224	$ 201

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Income from continuing operations	$ 6,321	$ 6,667	$ 8,075
Depreciation and impairment of Equipment on operating leases, net	7,178	7,332	7,604
Depreciation, amortization and impairment charges on Property, net	5,637	6,786	6,065
Foreign currency remeasurement and transaction (gains) losses	203	(85)	168
Undistributed earnings of nonconsolidated affiliates, net	524	585	(141)
Pension contributions and OPEB payments	(851)	(985)	(2,069)
Pension and OPEB income, net	(765)	(484)	(1,280)
Provision (benefit) for deferred taxes	925	(133)	(112)
Change in other operating assets and liabilities (Note 25)	(399)	(3,789)	(1,376)
Other operating activities	(2,103)	(873)	(1,678)
Net cash provided by operating activities	16,670	15,021	15,256
Cash flows from investing activities
Expenditures for property	(5,300)	(7,592)	(8,761)
Available-for-sale marketable securities, acquisitions	(16,204)	(4,075)	(2,820)
Available-for-sale marketable securities, liquidations	11,941	6,265	5,108
Purchases of finance receivables, net	(30,090)	(24,538)	(25,671)
Principal collections and recoveries on finance receivables	19,726	22,005	17,048
Purchases of leased vehicles, net	(15,233)	(16,404)	(16,736)
Proceeds from termination of leased vehicles	13,399	13,302	10,864
Other investing activities	(65)	138	39
Net cash used in investing activities – continuing operations	(21,826)	(10,899)	(20,929)
Net cash provided by investing activities – discontinued operations (Note 22)	0	0	166
Net cash used in investing activities	(21,826)	(10,899)	(20,763)
Cash flows from financing activities
Net increase (decrease) in short-term debt	277	(312)	1,186
Proceeds from issuance of debt (original maturities greater than three months)	78,527	36,937	43,801
Payments on debt (original maturities greater than three months)	(72,663)	(39,156)	(33,323)
Proceeds from issuance of subsidiary preferred and common stock (Note 20)	492	457	2,862
Dividends paid	(669)	(2,350)	(2,242)
Other financing activities	(412)	(253)	(830)
Net cash provided by (used in) financing activities	5,552	(4,677)	11,454
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(222)	2	(299)
Net increase (decrease) in cash, cash equivalents and restricted cash	174	(553)	5,648
Cash, cash equivalents and restricted cash at beginning of period	22,943	23,496	17,848
Cash, cash equivalents and restricted cash at end of period	23,117	22,943	23,496
Continuing Operations
Significant Non-cash Investing and Financing Activity
Non-cash property additions – continuing operations	$ 2,300	$ 2,837	$ 3,813

Consolidated Statements Of Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjustment	Noncontrolling Interests	Noncontrolling Interests Preferred Stock
Balance at beginning of period at Dec. 31, 2017	$ 36,200	$ (1,144)		$ 14	$ 25,371	$ 17,627	$ (1,046)	$ (8,011)	$ (98)	$ 1,199
Net income	8,005					8,014				(9)
Other comprehensive income (loss)	(936)							(930)		(6)
Purchase of common stock	(190)			0	(91)	(99)
Issuance of subsidiary preferred stock (Note 20)			$ 2,862								$ 2,862
Stock based compensation	287				287	0
Cash dividends paid on common stock	(2,144)					(2,144)
Dividends to noncontrolling interests	(169)									(169)
Other	6				(4)	30				40
Balance at end of period at Dec. 31, 2018	42,777			14	25,563	22,322		(9,039)		3,917
Net income	6,667					6,732				(65)
Other comprehensive income (loss)	(2,128)							(2,117)		(11)
Issuance of subsidiary preferred stock (Note 20)			457								457
Stock based compensation	375				409	(34)
Cash dividends paid on common stock	(2,165)					(2,165)
Dividends to noncontrolling interests	(166)									(166)
Other	140				102	5				33
Balance at end of period at Dec. 31, 2019	45,957	$ (660)		14	26,074	26,860	$ (660)	(11,156)		4,165
Net income	6,321					6,427				(106)
Other comprehensive income (loss)	(2,318)							(2,332)		14
Purchase of common stock	(90)				(57)	(33)
Issuance of subsidiary preferred stock (Note 20)			$ 544								$ 544
Stock based compensation	515				525	(10)
Cash dividends paid on common stock	(545)					(545)
Dividends to noncontrolling interests	(46)									(46)
Other	(1)				0	(77)				76
Balance at end of period at Dec. 31, 2020	$ 49,677			$ 14	$ 26,542	$ 31,962		$ (13,488)		$ 4,647

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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+ Details

Nature Of Operations and Basis of Presentation	12 Months Ended
Nature Of Operations and Basis of Presentation	Dec. 31, 2020
Nature of Operations and Basis of Presentation [Abstract]
Nature of Operations and Basis of Presentation	Nature of Operations and Basis of Presentation General Motors Company was incorporated as a Delaware corporation in 2009. We design, build and sell trucks, crossovers, cars and automobile parts worldwide and are investing in and growing an autonomous vehicle business. We also provide automotive financing services through GM Financial. We analyze the results of our continuing operations through the following segments: GMNA, GMI, Cruise and GM Financial. Cruise is our global segment responsible for the development and commercialization of autonomous vehicle technology. Nonsegment operations are classified as Corporate. Corporate includes certain centrally recorded income and costs such as interest, income taxes, corporate expenditures and certain nonsegment-specific revenues and expenses. The consolidated financial statements are prepared in conformity with U.S. GAAP. Except for per share amounts or as otherwise specified, amounts presented within tables are stated in millions. Principles of Consolidation We consolidate entities that we control due to ownership of a majority voting interest and we consolidate variable interest entities (VIEs) when we are the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation. Our share of earnings or losses of nonconsolidated affiliates is included in our consolidated operating results using the equity method of accounting when we are able to exercise significant influence over the operating and financial decisions of the affiliate. Use of Estimates in the Preparation of the Financial Statements Accounting estimates are an integral part of the consolidated financial statements. These estimates require the use of judgments and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses in the periods presented. We believe that the accounting estimates employed are appropriate and the resulting balances are reasonable; however, due to the inherent uncertainties in making estimates, actual results could differ from the original estimates, requiring adjustments to these balances in future periods. GM Financial The amounts presented for GM Financial have been adjusted to include the effect of our tax attributes on GM Financial's deferred tax positions and provision for income taxes, which are not applicable to GM Financial on a stand-alone basis, and to eliminate the effect of transactions between GM Financial and the other members of the consolidated group. Accordingly, the amounts presented will differ from those presented by GM Financial on a stand-alone basis.

Significant Accounting Policies	12 Months Ended
Significant Accounting Policies	Dec. 31, 2020
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies The accounting policies that follow are utilized by our automotive, automotive financing and Cruise operations, unless otherwise indicated. We adopted Accounting Standards Update (ASU) 2016-13 "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" (ASU 2016-13) on January 1, 2020 on a modified retrospective basis. As such, the comparative information in prior periods was not restated and continues to be reported under the accounting standards in effect for those periods. The accounting policies that follow for Marketable Debt Securities, Accounts and Notes Receivable and GM Financial Receivables that were affected by the adoption of ASU 2016-13 became effective on January 1, 2020. Revenue Recognition Automotive Automotive net sales and revenue represents the amount of consideration to which we expect to be entitled in exchange for vehicle, parts and accessories and services and other sales. The consideration recognized represents the amount received, typically shortly after the sale to a customer, net of estimated dealer and customer sales incentives we reasonably expect to pay. Significant factors in determining our estimates of incentives include forecasted sales volume, product mix and the rate of customer acceptance of incentive programs, all of which are estimated based on historical experience and assumptions concerning future customer behavior and market conditions. Subsequent adjustments to incentive estimates are possible as facts and circumstances change over time. A portion of the consideration received is deferred for separate performance obligations, such as maintenance and vehicle connectivity, that will be provided to our customers at a future date. Taxes assessed by various government entities, such as sales, use and value-added taxes, collected at the time of the vehicle sale are excluded from Automotive net sales and revenue. Costs for shipping and handling activities that occur after control of the vehicle transfers to the dealer are recognized at the time of sale and presented in Automotive and other cost of sales. Vehicle, Parts and Accessories For the majority of vehicle and accessories sales, our customers obtain control and we recognize revenue when the vehicle transfers to the dealer, which generally occurs when the vehicle is released to the carrier responsible for transporting it to a dealer. Revenue, net of estimated returns, is recognized on the sale of parts upon delivery to the customer. When our customers have a right to return eligible parts and accessories, we consider the returns in our estimation of the transaction price. Transfers to daily rental companies are accounted for as sales, with revenue recognized at the time of transfer. We defer revenue for remarketing obligations, record a residual value guarantee and reflect a liability for amounts expected to be paid once the remarketing services are complete at the time of certain transfers and recognize deferred revenue in earnings upon completion of the remarketing service. Transfers containing a substantive repurchase obligation are accounted for as operating leases and rental income is recognized over the estimated term of the lease. Our total exposure to vehicle repurchase obligations is reduced to the extent vehicles are able to be resold to a third party. Used Vehicles Proceeds from the auction of vehicles returned from daily rental car companies and vehicles utilized by our employees are recognized in Automotive net sales and revenue upon transfer of control of the vehicle to the customer and the related vehicle carrying value is recognized in Automotive and other cost of sales. Services and Other Services and other revenue primarily consists of revenue from vehicle-related service arrangements and after-sale services such as maintenance, OnStar, vehicle connectivity and extended service warranties. For those service arrangements that are bundled with a vehicle sale, a portion of the revenue from the sale is allocated to the service component and recognized as deferred revenue within Accrued liabilities or Other liabilities. We recognize revenue for bundled services and services sold separately as services are performed, typically over a period of up to seven years. Automotive Financing - GM Financial Finance charge income earned on finance receivables is recognized using the effective interest method. Fees and commissions received (including incentive payments) and direct costs of originating loans are deferred and amortized over the term of the related finance receivables using the effective interest method and are removed from the consolidated balance sheets when the related finance receivables are fully charged off or paid in full. Accrual of finance charge income on retail finance receivables is generally suspended on accounts that are more than 60 days delinquent, accounts in bankruptcy and accounts in repossession. Payments received on nonaccrual loans are first applied to any fees due, then to any interest due and then any remaining amounts are applied to principal. Interest accrual generally resumes once an account has received payments bringing the delinquency to less than 60 days past due. Accrual of finance charge income on commercial finance receivables is generally suspended on accounts that are more than 90 days delinquent, upon receipt of a bankruptcy notice from a borrower, or where reasonable doubt exists about the full collectability of contractually agreed upon principal and interest. Payments received on nonaccrual loans are first applied to principal. Interest accrual resumes once an account has received payments bringing the account fully current and collection of contractual principal and interest is reasonably assured (including amounts previously charged off). Income from operating lease assets, which includes lease origination fees, net of lease origination costs, is recorded as operating lease revenue on a straight-line basis over the term of the lease agreement. Gains or losses realized upon disposition of off-lease assets including any payments received from lessees upon lease termination, are included in GM Financial interest, operating and other. Advertising and Promotion Expenditures Advertising and promotion expenditures, which are expensed as incurred in Automotive and other selling, general and administrative expense, were $2.7 billion, $3.7 billion and $4.0 billion in the years ended December 31, 2020, 2019 and 2018. Research and Development Expenditures Research and development expenditures, which are expensed as incurred in Automotive and other cost of sales, were $6.2 billion, $6.8 billion and $7.8 billion in the years ended December 31, 2020, 2019 and 2018. We enter into cost sharing arrangements with third parties or nonconsolidated affiliates for product-related research, engineering, design and development activities. Cost sharing payments and fees related to these arrangements are presented in Automotive and other cost of sales. Cash Equivalents and Restricted Cash Cash equivalents are defined as short-term, highly-liquid investments with original maturities of 90 days or less. Certain operating agreements require us to post cash as collateral. Cash and cash equivalents subject to contractual restrictions and not readily available are classified as restricted cash. Restricted cash is invested in accordance with the terms of the underlying agreements and include amounts related to various deposits, escrows and other cash collateral. Restricted cash is included in Other current assets and Other assets in the consolidated balance sheets. Fair Value Measurements A three-level valuation hierarchy, based upon observable and unobservable inputs, is used for fair value measurements. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect market assumptions based on the best evidence available. These two types of inputs create the following fair value hierarchy: Level 1 – Quoted prices for identical instruments in active markets; Level 2 – Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations whose significant inputs are observable; and Level 3 – Instruments whose significant inputs are unobservable. Marketable Debt Securities We generally classify marketable debt securities as available-for-sale. Various factors, including turnover of holdings and investment guidelines, are considered in determining the classification of securities. Available-for-sale debt securities are recorded at fair value with non-credit related unrealized gains and losses recorded in Accumulated other comprehensive loss until realized. Non-credit related unrealized losses are reclassified to Interest income and other non-operating income, net if we intend to sell the security or it is more likely than not that we will be required to sell the security before the recovery of the unrealized loss. Credit losses are recorded in Interest income and other non-operating income, net. An evaluation is made quarterly to determine if any portion of unrealized losses recorded in Accumulated other comprehensive loss needs to be reclassified. We determine realized gains and losses for all debt securities using the specific identification method and measure the fair value of our marketable debt securities using a market approach where identical or comparable prices are available and an income approach in other cases. If quoted market prices are not available, fair values of securities are determined using prices from a pricing service, pricing models, quoted prices of securities with similar characteristics or discounted cash flow models. These prices represent non-binding quotes. Our pricing service utilizes industry-standard pricing models that consider various inputs. We conduct an annual review of our pricing service and believe the prices received from our pricing service are a reliable representation of exit prices. Accounts and Notes Receivable Accounts and notes receivable primarily consists of amounts that are due and payable from our customers for the sale of vehicles, parts, and accessories. We evaluate the collectability of receivables each reporting period and record an allowance for doubtful accounts to present the net amount expected to be collected on our receivables. Additions to the allowance are charged to bad debt expense reported in Automotive and other selling, general and administrative expense and were insignificant in the years ended December 31, 2020, 2019 and 2018. GM Financial Receivables Finance receivables are carried at amortized cost, net of allowance for loan losses. Provisions for loan losses are charged to operations in amounts sufficient to maintain the allowance for loan losses at levels considered adequate to cover expected credit losses on the finance receivables. For retail finance receivables, GM Financial uses static pool modeling techniques to determine the allowance for loan losses expected over the remaining life of the receivables, which is supplemented by management judgment. The modeling techniques incorporate reasonable and supportable forecasts of economic conditions over the expected remaining life of the finance receivables. The economic forecasts incorporate factors which vary by region that GM Financial believes will have the largest impact on expected losses, including unemployment rates, interest rate spreads, disposable personal income and growth rates in gross domestic product. Troubled debt restructurings (TDRs) are grouped separately for purposes of measuring the allowance. The allowance for TDRs uses static pool modeling techniques like non-TDR retail finance receivables to determine the expected loss amount. The expected cash flows of the receivables are then discounted at the original weighted average effective interest rate of the pool. Factors considered when estimating the allowance for TDRs are based on an evaluation of historical and current information, which may be supplemented by management judgment. Finance charge income from loans classified as TDRs is accounted for in the same manner as other accruing loans. Cash collections on these loans are allocated according to the same payment hierarchy methodology applied to loans that are not classified as TDRs. Commercial finance receivables are carried at amortized cost, net of allowance for loan losses and amounts held under a cash management program. GM Financial establishes the allowance for loan losses based on historical loss experience, as well as the forecast for industry vehicle sales, which is the economic indicator believed to have the largest impact on expected losses. Inventories Inventories are stated at the lower of cost or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business less cost to sell, and considers general market and economic conditions, periodic reviews of current profitability of vehicles, product warranty costs and the effect of estimated sales incentives. Net realizable value for off-lease and other vehicles is current auction sales proceeds less disposal and warranty costs. Productive material, supplies, work in process and service parts are reviewed to determine if inventory quantities are in excess of forecasted usage or if they have become obsolete. Equipment on Operating Leases Equipment on operating leases, net consists of vehicle leases to retail customers with lease terms of two to five years and vehicle sales to rental car companies that are expected to be repurchased in an average of seven months. We are exposed to changes in the residual values of these assets. The residual values represent estimates of the values of the leased vehicles at the end of the lease agreements and are determined based on forecasted auction proceeds when there is a reliable basis to make such a determination. Realization of the residual values is dependent on the future ability to market the vehicles under prevailing market conditions. The estimate of the residual value is evaluated over the life of the arrangement and adjustments may be made to the extent the expected value of the vehicle changes. Adjustments may be in the form of revisions to the depreciation rate or recognition of an impairment charge. A lease vehicle asset group is determined to be impaired if an impairment indicator exists and the expected future cash flows, which include estimated residual values, are lower than the carrying amount of the vehicle asset group. If the carrying amount is considered impaired an impairment charge is recorded for the amount by which the carrying amount exceeds fair value of the vehicle asset group. Fair value is determined primarily using the anticipated cash flows, including estimated residual values. In our automotive operations when a vehicle that is accounted for as a lease is returned the asset is reclassified from Equipment on operating leases, net to Inventories at the lower of cost or net realizable value. Upon disposition, proceeds are recorded in Automotive net sales and revenue and costs are recorded in Automotive and other cost of sales. In our automotive finance operations when a leased vehicle is returned or repossessed the asset is recorded in Other assets at the lower of amortized cost or net realizable value. Upon disposition a gain or loss is recorded in GM Financial interest, operating and other expenses for any difference between the net book value of the leased asset and the proceeds from the disposition of the asset. Equity Investments When events and circumstances warrant, equity investments accounted for under the equity method of accounting are evaluated for impairment. An impairment charge is recorded whenever a decline in value of an equity investment below its carrying amount is determined to be other-than-temporary. Impairment charges related to equity method investments are recorded in Equity income. Equity investments that are not accounted for under the equity method of accounting are measured at fair value with changes in fair value recorded in Interest income and other non-operating income, net. Property, net Property, plant and equipment, including internal use software, is recorded at cost. Major improvements that extend the useful life or add functionality are capitalized. The gross amount of assets under finance leases is included in property, plant and equipment. Expenditures for repairs and maintenance are charged to expense as incurred. We depreciate depreciable property using the straight-line method. Leasehold improvements are amortized over the period of lease or the life of the asset, whichever is shorter. The amortization of the assets under finance leases is included in depreciation expense. Upon retirement or disposition of property, plant and equipment, the cost and related accumulated depreciation are eliminated and any resulting gain or loss is recorded in earnings. Impairment charges related to property are recorded in Automotive and other cost of sales, Automotive and other selling, general and administrative expense or GM Financial interest, operating and other expenses. Special Tools Special tools represent product-specific propulsion and non-propulsion related tools, dies, molds and other items used in the vehicle manufacturing process. Expenditures for special tools are recorded at cost and are capitalized. We amortize special tools over their estimated useful lives using the straight-line method or an accelerated amortization method based on their historical and estimated production volume. Impairment charges related to special tools are recorded in Automotive and other cost of sales. Goodwill Goodwill is not amortized but rather tested for impairment annually on October 1 and when events warrant such a review. The impairment test entails an assessment of qualitative factors to determine whether it is more likely than not that an impairment exists. If it is more likely than not that an impairment exists, then a quantitative impairment test is performed. Impairment exists when the carrying amount of a reporting unit exceeds its fair value. Intangible Assets, net Intangible assets, excluding goodwill, primarily include brand names, technology and intellectual property, customer relationships and dealer networks. Intangible assets are amortized on a straight-line or an accelerated method of amortization over their estimated useful lives. An accelerated amortization method reflecting the pattern in which the asset will be consumed is utilized if that pattern can be reliably determined. We consider the period of expected cash flows and underlying data used to measure the fair value of the intangible assets when selecting a useful life. Amortization of developed technology and intellectual property is recorded in Automotive and other cost of sales. Amortization of brand names, customer relationships and our dealer networks is recorded in Automotive and other selling, general and administrative expense or GM Financial interest, operating and other expenses. Impairment charges, if any, related to intangible assets are recorded in Automotive and other selling, general and administrative expense or Automotive and other cost of sales. Valuation of Long-Lived Assets The carrying amount of long-lived assets and finite-lived intangible assets to be held and used in the business is evaluated for impairment when events and circumstances warrant. If the carrying amount of a long-lived asset group is considered impaired, a loss is recorded based on the amount by which the carrying amount exceeds fair value. Product-specific long-lived asset groups and non-product specific long-lived assets are separately tested for impairment on an asset group basis. Fair value is determined using either the market or sales comparison approach, cost approach or anticipated cash flows discounted at a rate commensurate with the risk involved. Long-lived assets to be disposed of other than by sale are considered held for use until disposition. Pension and OPEB Plans Attribution, Methods and Assumptions The cost of benefits provided by defined benefit pension plans is recorded in the period employees provide service. The cost of pension plan amendments that provide for benefits already earned by plan participants is amortized over the expected period of benefit which may be the duration of the applicable collective bargaining agreement specific to the plan, the expected future working lifetime or the life expectancy of the plan participants. The cost of medical, dental, legal service and life insurance benefits provided through postretirement benefit plans is recorded in the period employees provide service. The cost of postretirement plan amendments that provide for benefits already earned by plan participants is amortized over the expected period of benefit which may be the average period to full eligibility or the average life expectancy of the plan participants. An expected return on plan asset methodology is utilized to calculate future pension expense for certain significant funded benefit plans. A market-related value of plan assets methodology is also utilized that averages gains and losses on the plan assets over a period of years to determine future pension expense. The methodology recognizes 60% of the difference between the fair value of assets and the expected calculated value in the first year and 10% of that difference over each of the next four years. The discount rate assumption is established for each of the retirement-related benefit plans at their respective measurement dates. In the U.S. we use a cash flow matching approach that uses projected cash flows matched to spot rates along a high-quality corporate bond yield curve to determine the present value of cash flows to calculate a single equivalent discount rate. We apply individual annual yield curve rates to determine the service cost and interest cost for our pension and OPEB plans to more specifically link the cash flows related to service cost and interest cost to bonds maturing in their year of payment. The benefit obligation for pension plans in Canada, the U.K. and Germany represents 93% of the non-U.S. pension benefit obligation at December 31, 2020. The discount rates for plans in Canada, the U.K. and Germany are determined using a cash flow matching approach like the U.S. Plan Asset Valuation Due to the lack of timely available market information for certain investments in the asset classes described below as well as the inherent uncertainty of valuation, reported fair values may differ from fair values that would have been used had timely available market information been available. Common and Preferred Stock Common and preferred stock for which market prices are readily available at the measurement date are valued at the last reported sale price or official closing price on the primary market or exchange on which they are actively traded and are classified in Level 1. Such equity securities for which the market is not considered to be active are valued via the use of observable inputs, which may include the use of adjusted market prices last available, bids or last available sales prices and/or other observable inputs and are classified in Level 2. Common and preferred stock classified in Level 3 are privately issued securities or other issues that are valued via the use of valuation models using significant unobservable inputs that generally consider aged (stale) pricing, earnings multiples, discounted cash flows and/or other qualitative and quantitative factors. Debt Securities Valuations for debt securities are based on quotations received from independent pricing services or from dealers who make markets in such securities. Debt securities priced via pricing services that utilize matrix pricing which considers readily observable inputs such as the yield or price of bonds of comparable quality, coupon, maturity and type as well as dealer supplied prices, are classified in Level 2. Debt securities that are typically priced by dealers and pricing services via the use of proprietary pricing models which incorporate significant unobservable inputs are classified in Level 3. These inputs primarily consist of yield and credit spread assumptions, discount rates, prepayment curves, default assumptions and recovery rates. Investment Funds, Private Equity and Debt Investments and Real Estate Investments Investment funds, private equity and debt investments and real estate investments are valued based on the Net Asset Value (NAV) per Share (or its equivalent) as a practical expedient to estimate fair value due to the absence of readily available market prices. NAV's are provided by the respective investment sponsors or investment advisers and are subsequently reviewed and approved by management. In the event management concludes a reported NAV does not reflect fair value or is not determined as of the financial reporting measurement date, we will consider whether and when deemed necessary to make an adjustment at the balance sheet date. In determining whether an adjustment to the external valuation is required, we will review material factors that could affect the valuation, such as changes in the composition or performance of the underlying investments or comparable investments, overall market conditions, expected sale prices for private investments which are probable of being sold in the short-term and other economic factors that may possibly have a favorable or unfavorable effect on the reported external valuation. Stock Incentive Plans Our stock incentive plans include RSUs, Restricted Stock Awards (RSAs), PSUs, stock options and awards that may be settled in our stock, the stock of our subsidiaries or in cash. We measure and record compensation expense based on the fair value of GM or Cruise's common stock on the date of grant for RSUs, RSAs and PSUs and the grant date fair value, determined utilizing a lattice model or the Black-Scholes formula, for stock options and PSUs. We record compensation cost for service-based RSUs, RSAs, PSUs and service-based stock options on a straight-line basis over the entire vesting period, or for retirement eligible employees over the requisite service period. RSUs granted in stock of Cruise vest upon satisfaction of both a service condition and a liquidity condition, defined as a change in control transaction or the consummation of an initial public offering. Compensation costs for RSUs granted in stock of Cruise will be recorded when the liquidity condition is met. Compensation cost for awards that do not have an established accounting grant date, but for which the service inception date has been established, or are settled in cash is based on the fair value of GM or Cruise's common stock at the end of each reporting period. We use the graded vesting method to record compensation cost for stock options with market conditions over the lesser of the vesting period or the time period an employee becomes eligible to retain the award at retirement. Product Warranty and Recall Campaigns The estimated costs related to product warranties are accrued at the time products are sold and are charged to Automotive and other cost of sales. These estimates are established using historical information on the nature, frequency and average cost of claims of each vehicle line or each model year of the vehicle line and assumptions about future activity and events. Revisions are made when necessary and are based on changes in these factors. The estimated costs related to recall campaigns are accrued when probable and estimable, which is generally at the time of vehicle sale. In GMNA, we estimate the costs related to recall campaigns by applying a paid loss approach that considers the number of historical recall campaigns and the estimated cost for each recall campaign. The estimated costs associated with recall campaigns in other geographical regions are determined using the estimated costs of repairs and the estimated number of vehicles to be repaired. Costs associated with recall campaigns are charged to Automotive and other cost of sales. Revisions are made when necessary based on changes in these factors. Income Taxes The liability method is used in accounting for income taxes. Deferred tax assets and liabilities are recorded for temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements using the statutory tax rates in effect for the year in which the differences are expected to reverse. The effect on deferred tax assets and liabilities of a change in tax laws or rates is recorded in the results of operations in the period that includes the enactment date under the law. We establish valuation allowances for deferred tax assets based on a more likely than not standard. Deferred income tax assets are evaluated quarterly to determine if valuation allowances are required or should be adjusted. The ability to realize deferred tax assets depends on the ability to generate sufficient taxable income within the carryback or carryforward periods provided for in the tax law for each applicable tax jurisdiction. The assessment regarding whether a valuation allowance is required or should be adjusted also considers all available positive and negative evidence factors. It is difficult to conclude a valuation allowance is not required when there is significant objective and verifiable negative evidence, such as cumulative losses in recent years. We utilize a rolling three years of actual and current year results as the primary measure of cumulative losses in recent years. Income tax expense (benefit) for the year is allocated between continuing operations and other categories of income such as Other comprehensive income (loss). In periods in which there is a pre-tax loss from continuing operations and pre-tax income in another income category, the tax benefit allocated to continuing operations is determined by taking into account the pre-tax income of other categories. We record Global Intangible Low Tax Income (GILTI) as a current period expense when incurred. We record uncertain tax positions on the basis of a two-step process whereby we determine whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position, and for those tax positions that meet the more likely than not criteria, we recognize the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority. We record interest and penalties on uncertain tax positions in Income tax expense (benefit). Foreign Currency Transactions and Translation The assets and liabilities of foreign subsidiaries that use the local currency as their functional currency are translated to U.S. Dollars based on the current exchange rate prevailing at each balance sheet date and any resulting translation adjustments are included in Accumulated other comprehensive loss. The assets and liabilities of foreign subsidiaries whose local currency is not their functional currency are remeasured from their local currency to their functional currency and then translated to U.S. Dollars. Revenues and expenses are translated into U.S. Dollars using the average exchange rates prevailing for each period presented. The financial statements of any foreign subsidiary that has been identified as having a highly inflationary economy are remeasured as if the functional currency were the U.S. Dollar. Gains and losses arising from foreign currency transactions and the effects of remeasurements discussed in the preceding paragraph are recorded in Automotive and other cost of sales and GM Financial interest, operating and other expenses unless related to Automotive debt, which are recorded in Interest income and other non-operating income, net. Foreign currency transaction and remeasurement losses were $203 million, gains of $85 million and losses of $168 million in the years ended December 31, 2020, 2019 and 2018. Derivative Financial Instruments Derivative financial instruments are recognized as either assets or liabilities at fair value. The accounting for changes in the fair value of each derivative financial instrument depends on whether it has been designated and qualifies as an accounting hedge, as well as the type of hedging relationship identified. Derivative instruments are not used for trading or speculative purposes. Automotive We utilize options, swaps and forward contracts to manage foreign currency and commodity price risk. The change in fair value of option and forward contracts not designated as hedges is recorded in Interest income and other non-operating income, net. Cash flows for all derivative financial instruments are classified in cash flows from operating activities. We estimate the fair value of the PSA warrants using a Black-Scholes formula. The significant inputs to the model include the PSA stock price and the estimated dividend yield. We are entitled to receive any dividends declared by PSA through the conversion date upon exercise of the warrants. Gains or losses as a result of the change in the fair value of the PSA warrants are recorded in Interest income and other non-operating income, net. Automotive Financing - GM Financial GM Financial utilizes interest rate derivative instruments to manage interest rate risk and foreign currency derivative instruments to manage foreign currency risk. The change in fair value of the derivative instruments not designated as hedges is recorded in GM Financial interest, operating and other expenses. Cash flows for all derivative financial instruments are classified in cash flows from operating activities. Certain interest rate and foreign currency swap agreements have been designated as fair value hedges. The risk being hedged is the risk of changes in the fair value of the hedged debt attributable to changes in the benchmark interest rate or the risk of changes in fair value attributable to changes in foreign currency exchange rates. If the swap has been designated as a fair value hedge, the changes in the fair value of the hedged item are recorded in GM Financial interest, operating and other expenses. The change in fair value of the related hedge is also recorded in GM Financial interest, operating and other expenses. Certain interest rate swap and foreign currency swap agreements have been designated as cash flow hedges. The risk being hedged is the interest rate and foreign currency risk related to forecasted transactions. If the contract has been designated as a cash flow hedge, the change in the fair value of the cash flow hedge is deferred in Accumulated other comprehensive loss and is recognized in GM Financial interest, operating and other expenses along with the earnings effect of the hedged item when the hedged item affects earnings. Changes in the fair value of amounts excluded from the assessment of effectiveness are recorded currently in earnings and are presented in the same income statement line as the earnings effect of the hedged item. Recently Adopted Accounting Standards Effective January 1, 2020, we adopted ASU 2016-13, which requires entities to use a new impairment model based on current expected credit losses (CECL) rather than incurred losses. Estimated credit losses under CECL consider relevant information about past events, current conditions and reasonable and supportable forecasts that affect the collectability of financial assets, resulting in recognition of lifetime expected credit losses at initial recognition of the related asset. We adopted ASU 2016-13 on a modified retrospective basis by recognizing an after-tax cumulative-effect adjustment to the opening balance of Retained earnings of $660 million, inclusive of $643 million related to GM Financial. The application of ASU 2016-13 increased our allowance for loan losses related to GM Financial receivables, net by $801 million and had an insignificant impact to our allowance for credit losses for Accounts and notes receivable and no adoption impact to Marketable debt securities on our consolidated balance sheets.Effective July 1, 2020, we adopted ASU 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (ASU 2020-04), which provides optional expedients and exceptions for applying U.S. GAAP if certain criteria are met to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued, on a prospective basis. We do not believe the discontinuance of LIBOR will be a significant event for our Automotive arrangements. A substantial portion of GM Financial’s indebtedness bears interest at variable interest rates, primarily based on USD-LIBOR. The adoption of, and future elections under, ASU 2020-04 are not expected to have a material impact on our consolidated financial statements as the standard will ease, if warranted, the requirements for accounting for the future effects of the rate reform. We continue to monitor the impact the discontinuance of LIBOR or another reference rate will have on GM Financial's contracts, hedging relationships and other transactions.

Revenue

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Revenue

The following table disaggregates our revenue by major source for revenue generating segments:


	Year Ended December 31, 2020
	GMNA		GMI		Corporate		Total Automotive		Cruise		GM Financial		Eliminations/ Reclassifications		Total
Vehicle, parts and accessories	$	92,749	$	10,593	$	1	$	103,343	$	—	$	—	$	—	$	103,343
Used vehicles	875		115		20		1,010		—		—		—		1,010
Services and other	3,109		878		329		4,316		103		—		(99)		4,320
Automotive net sales and revenue	96,733		11,586		350		108,669		103		—		(99)		108,673
Leased vehicle income	—		—		—		—		—		9,530		—		9,530
Finance charge income	—		—		—		—		—		3,996		(1)		3,995
Other income	—		—		—		—		—		305		(18)		287
GM Financial net sales and revenue	—		—		—		—		—		13,831		(19)		13,812
Net sales and revenue	$	96,733	$	11,586	$	350	$	108,669	$	103	$	13,831	$	(118)	$	122,485


	Year Ended December 31, 2019
	GMNA		GMI		Corporate		Total Automotive		Cruise		GM Financial		Eliminations/ Reclassifications		Total
Vehicle, parts and accessories	$	101,346	$	14,931	$	—	$	116,277	$	—	$	—	$	—	$	116,277
Used vehicles	1,896		123		—		2,019		—		—		—		2,019
Services and other	3,124		1,057		220		4,401		100		—		(100)		4,401
Automotive net sales and revenue	106,366		16,111		220		122,697		100		—		(100)		122,697
Leased vehicle income	—		—		—		—		—		10,032		—		10,032
Finance charge income	—		—		—		—		—		4,071		(7)		4,064
Other income	—		—		—		—		—		451		(7)		444
GM Financial net sales and revenue	—		—		—		—		—		14,554		(14)		14,540
Net sales and revenue	$	106,366	$	16,111	$	220	$	122,697	$	100	$	14,554	$	(114)	$	137,237


	Year Ended December 31, 2018
	GMNA		GMI		Corporate		Total Automotive		GM Financial		Eliminations		Total
Vehicle, parts and accessories	$	107,217	$	17,980	$	20	$	125,217	$	—	$	(62)	$	125,155
Used vehicles	3,215		175		—		3,390		—		(36)		3,354
Services and other	3,360		993		183		4,536		—		—		4,536
Automotive net sales and revenue	113,792		19,148		203		133,143		—		(98)		133,045
Leased vehicle income	—		—		—		—		9,963		—		9,963
Finance charge income	—		—		—		—		3,629		(8)		3,621
Other income	—		—		—		—		424		(4)		420
GM Financial net sales and revenue	—		—		—		—		14,016		(12)		14,004
Net sales and revenue	$	113,792	$	19,148	$	203	$	133,143	$	14,016	$	(110)	$	147,049

Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Adjustments to sales incentives for previously recognized sales were insignificant during the years ended December 31, 2020, 2019 and 2018.

Contract liabilities in our Automotive segments primarily consist of maintenance, extended warranty and other service contracts of $2.4 billion and $2.2 billion at December 31, 2020 and 2019, which are included in Accrued liabilities and Other liabilities. We recognized revenue of $1.1 billion and $1.5 billion related to contract liabilities during the years ended December 31, 2020 and 2019. We expect to recognize revenue of $1.2 billion, $503 million and $759 million in the years ending December 31, 2021, 2022 and thereafter related to contract liabilities at December 31, 2020.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

+ Details

Marketable and Other Securities

12 Months Ended

Dec. 31, 2020

Marketable Securities [Abstract]

Marketable and Other Securities

The following table summarizes the fair value of cash equivalents and marketable debt securities, which approximates cost:


	Fair Value Level	December 31, 2020		December 31, 2019
Cash and cash equivalents
Cash and time deposits(a)		$	8,010	$	6,828
Available-for-sale debt securities
U.S. government and agencies	2	1,370		1,484
Corporate debt	2	3,476		5,863
Sovereign debt	2	2,051		2,123
Total available-for-sale debt securities – cash equivalents		6,897		9,470
Money market funds	1	5,085		2,771
Total cash and cash equivalents(b)		$	19,992	$	19,069
Marketable debt securities
U.S. government and agencies	2	$	1,771	$	226
Corporate debt	2	3,630		2,932
Mortgage and asset-backed	2	632		681
Sovereign debt	2	3,013		335
Total available-for-sale debt securities – marketable securities(c)		$	9,046	$	4,174
Restricted cash
Cash and cash equivalents		$	269	$	292
Money market funds	1	2,856		3,582
Total restricted cash		$	3,125	$	3,874

Available-for-sale debt securities included above with contractual maturities(d)
Due in one year or less		$	12,533
Due between one and five years		2,778


Total available-for-sale debt securities with contractual maturities		$	15,311

__________

(a) Includes $248 million that is designated exclusively to fund capital expenditures in GM Korea Company (GM Korea) at December 31, 2019. No amount was designated exclusively to fund GM Korea capital expenditures at December 31, 2020.

(b) Includes $761 million and $2.3 billion in Cruise at December 31, 2020 and 2019.

(d) Excludes mortgage- and asset-backed securities of $632 million at December 31, 2020 as these securities are not due at a single maturity date.

Proceeds from the sale of available-for-sale debt securities sold prior to maturity were $1.9 billion, $4.5 billion and $4.3 billion in the years ended December 31, 2020, 2019 and 2018. Net unrealized gains and losses on available-for-sale debt securities were insignificant in the years ended December 31, 2020, 2019 and 2018. Cumulative unrealized gains and losses on available-for-sale debt securities were insignificant at December 31, 2020 and 2019.

We liquidated our remaining shares in Lyft in the six months ended June 30, 2020. We recorded an insignificant unrealized loss in the years ended December 31, 2020 and 2019, and an unrealized gain of $142 million in Interest income and other non-operating income, net in the year ended December 31, 2018.

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same amounts shown in the consolidated statements of cash flows:


	December 31, 2020		December 31, 2019
Cash and cash equivalents	$	19,992	$	19,069
Restricted cash included in Other current assets	2,581		3,352
Restricted cash included in Other assets	544		522
Total	$	23,117	$	22,943

GM Financial Receivables and Transactions

12 Months Ended

Dec. 31, 2020

GM Financial

Finance Receivables [Line Items]

GM Financial Receivables and Transactions


	December 31, 2020						December 31, 2019
	Retail		Commercial(a)		Total		Retail		Commercial(a)		Total
GM Financial receivables	$	51,288	$	8,682	$	59,970	$	42,229	$	11,671	$	53,900
Less: allowance for loan losses	(1,915)		(63)		(1,978)		(866)		(78)		(944)
GM Financial receivables, net	$	49,373	$	8,619	$	57,992	$	41,363	$	11,593	$	52,956

Fair value of GM Financial receivables utilizing Level 2 inputs					$	8,619					$	11,593
Fair value of GM Financial receivables utilizing Level 3 inputs					$	51,645					$	41,973

__________

(a)Net of dealer cash management balances of $1.4 billion and $1.2 billion at December 31, 2020 and 2019. Under the cash management program, subject to certain conditions, a dealer may choose to reduce the amount of interest on their floorplan line by making principal payments to GM Financial in advance.


	Years Ended December 31,
	2020		2019		2018
Allowance for loan losses at beginning of period	$	944	$	911	$	942
Impact of adoption ASU 2016-13 (Note 2)	801		—		—
Provision for loan losses	881		726		642
Charge-offs	(1,169)		(1,246)		(1,199)
Recoveries	542		551		536
Effect of foreign currency	(21)		2		(10)
Allowance for loan losses at end of period	$	1,978	$	944	$	911

Retail Finance Receivables GM Financial's retail finance receivable portfolio includes loans made to consumers and businesses to finance the purchase of vehicles for personal and commercial use. A summary of the amortized cost of the retail finance receivables by FICO score or its equivalent, determined at origination, for each vintage of the retail finance receivables portfolio at December 31, 2020 is as follows:


	Year of Origination												December 31, 2020				December 31, 2019
	2020		2019		2018		2017		2016		Prior		Total		Percent		Total		Percent
Prime – FICO score 680 and greater	$	18,685	$	7,033	$	4,491	$	1,917	$	555	$	119	$	32,800	64.0	%	$	25,400	60.1	%
Near-prime – FICO score 620 to 679	3,695		2,097		1,232		603		225		83		7,935		15.4	%	6,862		16.3	%
Sub-prime – FICO score less than 620	3,803		2,920		1,740		1,173		610		307		10,553		20.6	%	9,967		23.6	%
Retail finance receivables, net of fees	$	26,183	$	12,050	$	7,463	$	3,693	$	1,390	$	509	$	51,288	100.0	%	$	42,229	100.0	%

GM Financial reviews the ongoing credit quality of retail finance receivables based on customer payment activity. A retail account is considered delinquent if a substantial portion of a scheduled payment has not been received by the date the payment was contractually due. Retail finance receivables are collateralized by vehicle titles and, subject to local laws, GM Financial generally has the right to repossess the vehicle in the event the customer defaults on the payment terms of the contract. The accrual of finance charge income had been suspended on delinquent retail finance receivables with contractual amounts due of $714 million and $875 million at December 31, 2020 and 2019. The following table is a consolidated summary of the delinquency status of the outstanding amortized cost of retail finance receivables for each vintage of the portfolio at December 31, 2020:


	Year of Origination												December 31, 2020			December 31, 2019
	2020		2019		2018		2017		2016		Prior			Total		Percent		Total(a)		Percent
0-to-30 days	$	25,894	$	11,591	$	7,131	$	3,454	$	1,249	$	421		$	49,740	97.0	%
31-to-60 days	210		325		235		170		102		61			1,103		2.1	%	$	1,354	3.2	%
Greater-than-60 days	72		123		90		64		37		26			412		0.8	%	542		1.3	%
Finance receivables more than 30 days delinquent	282		448		325		234		139		87			1,515		2.9	%	1,896		4.5	%
In repossession	7		11		7		5		2		1			33		0.1	%	44		0.1	%
Finance receivables more than 30 days delinquent or in repossession	289		459		332		239		141		88			1,548		3.0	%	$	1,940	4.6	%
Retail finance receivables, net of fees	$	26,183	$	12,050	$	7,463	$	3,693	$	1,390	$	509		$	51,288	100.0	%

__________

(a)Represents the contractual amounts of delinquent retail finance receivables, which is not significantly different than the outstanding amortized cost for such receivables.

The outstanding amortized cost of retail finance receivables that are considered TDRs was $2.2 billion at December 31, 2020, including $301 million in nonaccrual loans.

Commercial Finance Receivables GM Financial's commercial finance receivables consist of dealer financings, primarily for inventory purchases. Proprietary models are used to assign a risk rating to each dealer. GM Financial performs periodic credit reviews of each dealership and adjusts the dealership's risk rating, if necessary. The commercial finance receivables on nonaccrual status were insignificant at December 31, 2020.

Prior to January 1, 2020, GM Financial estimated the allowance for loan losses based on an analysis of the experience of comparable commercial lenders. Effective January 1, 2020, GM Financial establishes the allowance for loan losses based on historical loss experience for the consolidated portfolio, in addition to forecast for industry vehicle sales. The updated risk rating categories are as follows:


Rating						Description
I						Performing accounts with strong to acceptable financial metrics with at least satisfactory capacity to meet financial commitments.
II						Performing accounts experiencing potential weakness in financial metrics and repayment prospects resulting in increased monitoring.
III						Non-Performing accounts with inadequate paying capacity for current obligations and have the distinct possibility of creating a loss if deficiencies are not corrected.
IV						Non-Performing accounts with inadequate paying capacity for current obligations and inherent weaknesses that make collection of liquidation in full highly questionable or improbable.

Dealers with III and IV risk ratings are subject to additional monitoring and restrictions on funding, including suspension of lines of credit and liquidation of assets. The following table summarizes the credit risk profile by dealer risk rating of commercial finance receivables at December 31, 2020:


	Year of Origination(a)														December 31, 2020
	Revolving		2020		2019		2018		2017		2016		Prior			Total		Percent
I	$	6,968	$	510	$	159	$	63	$	95	$	43	$	19		$	7,857	90.5	%
II	491		2		18		2		3		18		34			568		6.5	%
III	203		—		8		29		2		11		—			253		2.9	%
IV	—		—		—		—		—		—		4			4		0.1	%
Commercial finance receivables, net of fees	$	7,662	$	512	$	185	$	94	$	100	$	72	$	57		$	8,682	100.0	%

_________

(a)Floorplan advances comprise 97% of the total revolving balance. Dealer term loans are presented by year of origination.

Transactions with GM Financial The following table shows transactions between our Automotive segments and GM Financial. These amounts are presented in GM Financial's consolidated balance sheets and statements of income.


	December 31, 2020		December 31, 2019
Consolidated Balance Sheets(a)
Commercial finance receivables, net due from GM consolidated dealers	$	398	$	478

Subvention receivable(b)	$	642	$	676
Commercial loan funding payable	$	23	$	74


	Years Ended December 31,
	2020		2019		2018
Consolidated Statements of Income
Interest subvention earned on finance receivables	$	679	$	588	$	554
Leased vehicle subvention earned	$	3,042	$	3,273	$	3,274

__________

(a)All balance sheet amounts are eliminated upon consolidation.

(b)Our Automotive segments made cash payments to GM Financial for subvention of $3.9 billion, $4.1 billion, and $3.8 billion in the years ended December 31, 2020, 2019 and 2018.

GM Financial's Board of Directors declared and paid dividends of $800 million, $400 million and $375 million on its common stock in the years ended December 31, 2020, 2019 and 2018.

Inventories

12 Months Ended

Dec. 31, 2020

Inventory Disclosure [Abstract]

Inventories


	December 31, 2020		December 31, 2019
Total productive material, supplies and work in process	$	5,117	$	4,713
Finished product, including service parts	5,118		5,685
Total inventories	$	10,235	$	10,398

Equipment on Operating Leases

12 Months Ended

Dec. 31, 2020

Vehicles

Property Subject to or Available for Operating Lease [Line Items]

Equipment on Operating Leases

Equipment on Operating Leases Equipment on operating leases primarily consists of leases to retail customers of GM Financial. The current portion of net equipment on operating leases is included in Other current assets.


	December 31, 2020		December 31, 2019
Equipment on operating leases	$	50,000	$	53,081
Less: accumulated depreciation	(10,181)		(10,989)
Equipment on operating leases, net	$	39,819	$	42,092

At December 31, 2020, the estimated residual value of our leased assets at the end of the lease term was $29.2 billion.

Depreciation expense related to Equipment on operating leases, net was $7.2 billion, $7.3 billion and $7.5 billion in the years ended December 31, 2020, 2019 and 2018.

The following table summarizes lease payments due to GM Financial on leases to retail customers:


	Years Ending December 31,
	2021		2022		2023		2024		2025		Thereafter		Total
Lease receipts under operating leases	$	6,142	$	3,783	$	1,441	$	112	$	2	$	—	$	11,480

Equity In Net Assets Of Nonconsolidated Affiliates

12 Months Ended

Dec. 31, 2020

Equity Method Investments and Joint Ventures [Abstract]

Equity in Net Assets of Nonconsolidated Affiliates

Nonconsolidated affiliates are entities in which we maintain an equity ownership interest and for which we use the equity method of accounting due to our ability to exert significant influence over decisions relating to their operating and financial affairs. Revenue and expenses of our joint ventures are not consolidated into our financial statements; rather, our proportionate share of the earnings of each joint venture is reflected as Equity income.


	Years Ended December 31,
	2020		2019		2018
Automotive China equity income	$	512	$	1,132	$	1,981
Other joint ventures equity income	162		136		182
Total Equity income	$	674	$	1,268	$	2,163

Investments in Nonconsolidated Affiliates


	December 31, 2020		December 31, 2019
Automotive China carrying amount	$	6,599	$	7,044
Other investments carrying amount	1,807		1,518
Total equity in net assets of nonconsolidated affiliates	$	8,406	$	8,562

The carrying amount of our investments in certain joint ventures exceeded our share of the underlying net assets by $4.2 billion at December 31, 2020 and 2019 primarily due to goodwill from the application of fresh-start reporting and the purchase of additional interests in nonconsolidated affiliates.

The following table summarizes our direct ownership interests in our China JVs:


	December 31, 2020		December 31, 2019
Automotive China JVs
SAIC General Motors Corp., Ltd. (SGM)	50	%	50	%
Pan Asia Technical Automotive Center Co., Ltd.	50	%	50	%
SAIC General Motors Sales Co., Ltd.	49	%	49	%
SAIC GM Wuling Automobile Co., Ltd. (SGMW)	44	%	44	%
Shanghai OnStar Telematics Co., Ltd. (Shanghai OnStar)	40	%	40	%
SAIC GM (Shenyang) Norsom Motors Co., Ltd. (SGM Norsom)	25	%	25	%
SAIC GM Dong Yue Motors Co., Ltd. (SGM DY)	25	%	25	%
SAIC GM Dong Yue Powertrain Co., Ltd. (SGM DYPT)	25	%	25	%
Other joint ventures
SAIC-GMAC Automotive Finance Company Limited (SAIC-GMAC)	35	%	35	%
SAIC-GMF Leasing Co., Ltd.	35	%	35	%

SGM is a joint venture we established with Shanghai Automotive Industry Corporation (SAIC) (50%). SGM has interests in three other joint ventures in China: SGM Norsom, SGM DY and SGM DYPT. These three joint ventures are jointly held by SGM (50%), SAIC (25%) and ourselves. These four joint ventures are engaged in the production, import and sale of a range of products under the Buick, Chevrolet and Cadillac brands. SGM also has interests in Shanghai OnStar (20%), SAIC-GMAC (20%) and SAIC-GMF Leasing Co., Ltd. (20%). Shanghai Automotive Group Finance Company Ltd., a subsidiary of SAIC, owns 45% of SAIC-GMAC. SAIC Financial Holdings Company, a subsidiary of SAIC, owns 45% of SAIC-GMF Leasing Co., Ltd.

Summarized Financial Data of Nonconsolidated Affiliates


	December 31, 2020						December 31, 2019
	Automotive China JVs		Others		Total		Automotive China JVs		Others		Total
Summarized Balance Sheet Data
Current assets	$	17,604	$	16,844	$	34,448	$	14,035	$	13,319	$	27,354
Non-current assets	14,875		8,634		23,509		14,484		6,680		21,164
Total assets	$	32,479	$	25,478	$	57,957	$	28,519	$	19,999	$	48,518

Current liabilities	$	25,633	$	14,808	$	40,441	$	21,256	$	11,588	$	32,844
Non-current liabilities	1,163		6,654		7,817		968		5,017		5,985
Total liabilities	$	26,796	$	21,462	$	48,258	$	22,224	$	16,605	$	38,829

Noncontrolling interests	$	824	$	1	$	825	$	847	$	1	$	848


	Years Ended December 31,
	2020		2019		2018
Summarized Operating Data
Automotive China JVs' net sales	$	38,736	$	39,123	$	50,316
Others' net sales	1,850		1,815		1,721
Total net sales	$	40,586	$	40,938	$	52,037

Automotive China JVs' net income	$	1,239	$	2,258	$	3,992
Others' net income	436		477		536
Total net income	$	1,675	$	2,735	$	4,528

Transactions with Nonconsolidated Affiliates Our nonconsolidated affiliates are involved in various aspects of the development, production and marketing of trucks, crossovers, cars and automobile parts. We enter into transactions with certain nonconsolidated affiliates to purchase and sell component parts and vehicles. The following tables summarize transactions with and balances related to our nonconsolidated affiliates:


	Years Ended December 31,
	2020		2019		2018
Automotive sales and revenue	$	235	$	199	$	406
Automotive purchases, net	$	165	$	1,065	$	1,155
Dividends received	$	1,198	$	1,852	$	2,022
Operating cash flows	$	1,473	$	913	$	657


	December 31, 2020		December 31, 2019
Accounts and notes receivable, net	$	954	$	1,007
Accounts payable	$	494	$	369
Undistributed earnings	$	1,594	$	2,118

Property

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment, Net [Abstract]

Property


	Estimated Useful Lives in Years	December 31, 2020		December 31, 2019
Land		$	1,339	$	1,302
Buildings and improvements	5-40	9,671		9,705
Machinery and equipment	3-27	30,013		29,814
Special tools	1-13	20,851		23,586
Construction in progress		3,581		3,042
Total property		65,455		67,449
Less: accumulated depreciation		(27,823)		(28,699)
Total property, net		$	37,632	$	38,750

The amount of capitalized software included in Property, net was $1.3 billion at December 31, 2020 and 2019. The amount of interest capitalized and excluded from Automotive interest expense related to Property, net was insignificant in the years ended December 31, 2020, 2019 and 2018.


	Years Ended December 31,
	2020		2019		2018
Depreciation and amortization expense	$	5,354	$	6,541	$	5,347
Impairment charges	$	86	$	7	$	466


Capitalized software amortization expense(a)	$	457	$	452	$	424

__________

(a) Included in depreciation and amortization expense.

Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Intangible Assets Goodwill of $1.9 billion consisted of $1.3 billion and $1.4 billion recorded in GM Financial, primarily related to its North America reporting unit, and $567 million and $504 million included in Cruise at December 31, 2020 and 2019. The COVID-19 pandemic has caused material disruption to businesses, resulting in an economic slowdown. The economic and social uncertainty resulting from the COVID-19 pandemic indicated that it was more likely than not that a goodwill impairment existed at March 31, 2020 for GM Financial's North America reporting unit. Therefore, at March 31, 2020, we performed an event-driven goodwill impairment test for GM Financial's North America reporting unit and determined no goodwill impairment existed.

The fair value of GM Financial's North America reporting unit at March 31, 2020 was determined based on valuation techniques using the best available information, primarily discounted cash flow projections. We make significant assumptions and estimates about the extent and timing of future cash flows. There can be no assurance that anticipated financial results will be achieved. Under multiple scenarios, including fully weighting the downside cash flow scenario, the estimated fair value of GM Financial's North America reporting unit at March 31, 2020 exceeded its carrying amount. Since our goodwill impairment analysis at March 31, 2020, we performed a qualitative assessment of goodwill impairment by evaluating our economic performance, outlook and other events and circumstances and noted no indicators that would warrant further quantitative testing of goodwill impairment.


	December 31, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Technology and intellectual property	$	762	$	542	$	220	$	734	$	533	$	201
Brands	4,300		1,444		2,856		4,298		1,285		3,013
Dealer network, customer relationships and other	981		737		244		966		702		264
Total intangible assets	$	6,043	$	2,723	$	3,320	$	5,998	$	2,520	$	3,478

Our amortization expense related to intangible assets was $144 million, $202 million, and $247 million in the years ended December 31, 2020, 2019 and 2018.

Amortization expense related to intangible assets is estimated to be approximately $160 million in each of the next five years.

Variable Interest Entities

12 Months Ended

Dec. 31, 2020

Variable Interest Entities [Abstract]

Variable Interest Entities

Consolidated VIEs

Automotive Financing - GM Financial

GM Financial uses special purpose entities (SPEs) that are considered VIEs to issue variable funding notes to third party bank-sponsored warehouse facilities or asset-backed securities to investors in securitization transactions. The debt issued by these VIEs is backed by finance receivables and leasing-related assets transferred to the VIEs (Securitized Assets). GM Financial determined that it is the primary beneficiary of the SPEs because the servicing responsibilities for the Securitized Assets give GM Financial the power to direct the activities that most significantly impact the performance of the VIEs and the variable interests in the VIEs give GM Financial the obligation to absorb losses and the right to receive residual returns that could potentially be significant. The assets of the VIEs serve as the sole source of repayment for the debt issued by these entities. Investors in the notes issued by the VIEs do not have recourse to GM Financial or its other assets, with the exception of customary representation and warranty repurchase provisions and indemnities that GM Financial provides as the servicer. GM Financial is not required to provide additional financial support to these SPEs. While these subsidiaries are included in GM Financial's consolidated financial statements, they are separate legal entities and their assets are legally owned by them and are not available to GM Financial's creditors.

The following table summarizes the assets and liabilities related to GM Financial's consolidated VIEs:


	December 31, 2020		December 31, 2019
Restricted cash – current	$	2,190	$	2,202
Restricted cash – non-current	$	449	$	441
GM Financial receivables, net of fees – current	$	17,211	$	19,081
GM Financial receivables, net of fees – non-current	$	15,107	$	15,921
GM Financial equipment on operating leases, net	$	16,322	$	14,464
GM Financial short-term debt and current portion of long-term debt	$	20,450	$	23,952
GM Financial long-term debt	$	18,974	$	15,819

GM Financial recognizes finance charge, leased vehicle and fee income on the Securitized Assets and interest expense on the secured debt issued in a securitization transaction and records a provision for loan losses to recognize loan losses expected over the remaining life of the finance receivables.

Nonconsolidated VIEs

Automotive

Nonconsolidated VIEs principally include automotive related operating entities to which we provided financial support to ensure that our supply needs for production are met or are not disrupted. Our variable interests in these nonconsolidated VIEs include equity investments, accounts and loans receivable, committed financial support and other off-balance sheet arrangements. The carrying amounts of assets and liabilities related to our nonconsolidated VIEs were insignificant at December 31, 2020 and 2019. Our maximum exposure to loss as a result of our involvement with these VIEs was $1.2 billion, inclusive of $776 million in committed capital contributions to Ultium Cells LLC at December 31, 2020, and an insignificant amount at December 31, 2019. We currently lack the power through voting or similar rights to direct the activities of these entities that most significantly affect their economic performance.

Accrued and Other Liabilities

12 Months Ended

Dec. 31, 2020

Accrued Liabilities and Other Liabilities [Abstract]

Accrued and Other Liabilities


	December 31, 2020		December 31, 2019
Accrued liabilities
Dealer and customer allowances, claims and discounts	$	7,300	$	10,402
Deferred revenue	3,132		3,234
Product warranty and related liabilities	3,048		2,987
Payrolls and employee benefits excluding postemployment benefits	1,864		1,969
Other	7,725		7,895
Total accrued liabilities	$	23,069	$	26,487

Other liabilities
Deferred revenue	$	2,715	$	2,962
Product warranty and related liabilities	5,193		4,811
Operating lease liabilities	969		1,010
Employee benefits excluding postemployment benefits	822		704
Postemployment benefits including facility idling reserves	739		633
Other	3,009		3,026
Total other liabilities	$	13,447	$	13,146


	Years Ended December 31,
	2020		2019		2018
Product Warranty and Related Liabilities
Warranty balance at beginning of period	$	7,798	$	7,590	$	8,332
Warranties issued and assumed in period – recall campaigns	1,628		745		665
Warranties issued and assumed in period – product warranty	1,773		2,001		2,143
Payments	(2,986)		(3,012)		(2,903)
Adjustments to pre-existing warranties	41		455		(464)
Effect of foreign currency and other	(12)		19		(183)
Warranty balance at end of period	$	8,242	$	7,798	$	7,590

In the three months ended December 31, 2020, we recorded an accrual of $1.1 billion, which represents our current estimate of the expected costs of complying with the recall related to the Takata passenger-side inflators in certain GMT900 vehicles, which are full-size pickup trucks and SUVs. This accrual is reflected in Warranties issued and assumed in period – recall campaigns in the table above. Refer to Note 16 for additional information on Takata matters.

Debt

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Debt

Automotive The following table presents debt in our automotive operations:


	December 31, 2020					December 31, 2019
	Carrying Amount		Fair Value			Carrying Amount		Fair Value
Secured debt	$	303	$	332		$	167	$	165
Unsecured debt	16,929		20,988			13,909		15,247
Finance lease liabilities	237		256			310		516
Total automotive debt(a)	$	17,469	$	21,576		$	14,386	$	15,928

Fair value utilizing Level 1 inputs			$	19,826				$	13,628
Fair value utilizing Level 2 inputs			$	1,750				$	2,300


Available under credit facility agreements(b)			$	18,222				$	17,285
Weighted-average interest rate on outstanding short-term debt(c)			3.8		%			4.9		%
Weighted-average interest rate on outstanding long-term debt(c)			5.6		%			5.4		%

__________

(a)Includes net discount and debt issuance costs of $540 million at December 31, 2020 and 2019.

(b)Excludes our 364-day, $2.0 billion facility designated for exclusive use by GM Financial.

(c)Includes coupon rates on debt denominated in various foreign currencies and interest free loans.

Unsecured debt primarily consists of revolving credit facilities and senior notes. In March 2020, we borrowed: (1) $3.4 billion against our three-year, $4.0 billion facility; (2) $2.0 billion against our three-year, $3.0 billion facility, which reduced to $2.0 billion in May 2020 (three-year, $2.0 billion transformation facility); and (3) $10.5 billion against our five-year, $10.5 billion facility with maturity dates ranging from 2021 to 2023. We repaid all amounts drawn under the revolving credit facilities as of December 31, 2020. We did not have any borrowings against our revolving credit facilities at December 31, 2019.

In April 2020, we renewed our 364-day, $2.0 billion facility dedicated for exclusive use by GM Financial for an additional 364-day term and extended $3.6 billion of the three-year, $4.0 billion facility for an additional year expiring in April 2022. The remaining portion will expire in April 2021, unless extended. As part of the extension of the three-year, $4.0 billion facility, we agreed not to execute any share repurchases while we have any outstanding borrowings under the revolving credit facilities, except for the three-year, $2.0 billion transformation facility. In addition, we are restricted from paying dividends on our common shares if outstanding borrowings under the revolving credit facilities exceed $5.0 billion, with the exception of the three-year, $2.0 billion transformation facility.

In May 2020, we issued $4.0 billion in aggregate principal amount of senior unsecured notes with a weighted average interest rate of 6.11% and maturity dates ranging from 2023 to 2027. The notes are governed by a sixth supplemental indenture and the same base indenture that governs our existing notes, which contains terms and covenants customary to these types of securities, including a limitation on the amount of certain secured debt we may incur. The net proceeds from the issuance of these senior unsecured notes provide additional financial flexibility and will be used for general corporate purposes. In May 2020, we entered into a new unsecured 364-day, $2.0 billion revolving credit facility as an additional source of available liquidity. In August 2020, we repaid $500 million of our floating rate senior unsecured debt upon maturity.

GM Financial The following table presents debt of GM Financial:


	December 31, 2020				December 31, 2019
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Secured debt	$	39,982	$	40,380	$	39,959	$	40,160
Unsecured debt	52,443		54,568		48,979		50,239
Total GM Financial debt	$	92,425	$	94,948	$	88,938	$	90,399

Fair value utilizing Level 2 inputs			$	92,922			$	88,481
Fair value utilizing Level 3 inputs			$	2,026			$	1,918

Secured debt consists of revolving credit facilities and securitization notes payable. Most of the secured debt was issued by VIEs and is repayable only from proceeds related to the underlying pledged assets. Refer to Note 11 for additional information on GM Financial's involvement with VIEs. GM Financial is required to hold certain funds in restricted cash accounts to provide additional collateral for borrowings under certain secured credit facilities. The weighted-average interest rate on secured debt was 1.89% at December 31, 2020. The revolving credit facilities have maturity dates ranging from 2021 to 2026 and securitization notes payable have maturity dates ranging from 2021 to 2028. At the end of the revolving period, if not renewed, the debt of revolving credit facilities will amortize over a defined period. In the year ended December 31, 2020, GM Financial renewed revolving credit facilities with total borrowing capacity of $21.1 billion and issued $24.6 billion in aggregate principal amount of securitization notes payable with an initial weighted average interest rate of 1.17% and maturity dates ranging from 2021 to 2028.

Unsecured debt consists of senior notes, credit facilities and other unsecured debt. Senior notes outstanding at December 31, 2020 have maturity dates ranging from 2021 to 2030 and have a weighted-average interest rate of 3.25%. In the year ended December 31, 2020, GM Financial issued $9.2 billion in aggregate principal amount of senior notes with an initial weighted average interest rate of 2.93% and maturity dates ranging from 2023 to 2030.

In January 2021, GM Financial issued $2.5 billion in senior notes with a weighted average interest rate of 1.69% and maturity dates ranging from 2026 to 2031. In January 2021, GM Financial issued CAD $500 million in senior notes with an interest rate of 1.75% due in 2026.

Unsecured credit facilities and other unsecured debt have original maturities of up to four years. The weighted-average interest rate on these credit facilities and other unsecured debt was 2.47% at December 31, 2020.


	Years Ended December 31,
	2020		2019		2018
Automotive interest expense	$	1,098	$	782	$	655
Automotive Financing - GM Financial interest expense	3,023		3,641		3,225
Total interest expense	$	4,121	$	4,423	$	3,880

The following table summarizes contractual maturities including finance leases at December 31, 2020:


	Automotive		Automotive Financing		Total
2021	$	1,276	$	35,742	$	37,018
2022	137		19,312		19,449
2023	2,593		15,267		17,860
2024	86		7,808		7,894
2025	2,578		6,609		9,187
Thereafter	11,339		7,277		18,616
	$	18,009	$	92,015	$	110,024

Compliance with Debt Covenants Several of our loan facilities, including our revolving credit facilities, require compliance with certain financial and operational covenants as well as regular reporting to lenders, including providing certain subsidiary financial statements. Certain of GM Financial’s secured debt agreements also contain various covenants, including maintaining portfolio performance ratios as well as limits on deferment levels. GM Financial’s unsecured debt obligations contain covenants including limitations on GM Financial's ability to incur certain liens. Failure to meet certain of these requirements may result in a covenant violation or an event of default depending on the terms of the agreement. An event of default may allow lenders to declare amounts outstanding under these agreements immediately due and payable, to enforce their interests against collateral pledged under these agreements or restrict our ability or GM Financial's ability to obtain additional borrowings. No technical defaults or covenant violations existed at December 31, 2020.

Derivative Financial Instruments

12 Months Ended

Dec. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Automotive The following table presents the notional amounts of derivative financial instruments in our automotive operations:


	Fair Value Level	December 31, 2020		December 31, 2019
Derivatives not designated as hedges(a)
Foreign currency	2	$	2,195	$	5,075
Commodity	2	341		806
PSA Warrants(b)	2	49		45
Total derivative financial instruments		$	2,585	$	5,926

__________

(a)The fair value of these derivative instruments at December 31, 2020 and 2019 and the gains/losses included in our consolidated income statements for the years ended December 31, 2020, 2019 and 2018 were insignificant, unless otherwise noted.

(b)The fair value of the PSA warrants located in Other assets was $1.1 billion and $964 million at December 31, 2020 and 2019. We recorded gains in Interest income and other non-operating income, net of $139 million, $154 million and $116 million for the years ended December 31, 2020, 2019 and 2018. As a result of the merger of PSA Group and Fiat Chrysler Automobiles N.V. on January 16, 2021, our 39.7 million warrants in PSA Group will convert into 69.2 million common shares of Stellantis N.V. upon exercise. These warrants will continue to be governed by the same terms and conditions that were applicable prior to the merger.

GM Financial The following table presents the gross fair value amounts of GM Financial's derivative financial instruments and the associated notional amounts:


	Fair Value Level	December 31, 2020						December 31, 2019
		Notional		Fair Value of Assets		Fair Value of Liabilities		Notional		Fair Value of Assets		Fair Value of Liabilities
Derivatives designated as hedges(a)
Fair value hedges
Interest rate swaps	2	$	10,064	$	463	$	13	$	9,458	$	234	$	23
Foreign currency swaps	2	1,958		128		9		1,796		22		71
Cash flow hedges
Interest rate swaps	2	921		—		27		590		—		6
Foreign currency swaps	2	5,626		278		47		4,429		40		119
Derivatives not designated as hedges(a)
Interest rate contracts	2	110,997		954		576		92,400		340		300
Total derivative financial instruments(b)		$	129,566	$	1,823	$	672	$	108,673	$	636	$	519

__________

(a)The gains/losses included in our consolidated income statements and statements of comprehensive income for the years ended December 31, 2020, 2019 and 2018 were insignificant, unless otherwise noted. Amounts accrued for interest payments in a net receivable position are included in Other assets. Amounts accrued for interest payments in a net payable position are included in Other liabilities.

(b)GM Financial held $728 million and $210 million of collateral from counterparties available for netting against GM Financial's asset positions, and posted an insignificant amount of collateral to counterparties available for netting against GM Financial's liability positions at December 31, 2020 and 2019.

The fair value for Level 2 instruments was derived using the market approach based on observable market inputs including quoted prices of similar instruments and foreign exchange and interest rate forward curves.

The following amounts were recorded in the consolidated balance sheets related to items designated and qualifying as hedged items in fair value hedging relationships:


	December 31, 2020				December 31, 2019
	Carrying Amount of Hedged Items		Cumulative Amount of Fair Value Hedging Adjustments(a)		Carrying Amount of Hedged Items		Cumulative Amount of Fair Value Hedging Adjustments(a)
Short-term unsecured debt	$	4,858	$	(69)	$	996	$	4
Long-term unsecured debt	18,457		(670)		19,401		(81)
GM Financial unsecured debt	$	23,315	$	(739)	$	20,397	$	(77)

__________

(a)Includes $200 million of unamortized gains and an insignificant amount of amortization remaining on hedged items for which hedge accounting has been discontinued at December 31, 2020 and 2019.

Pensions And Other Postretirement Benefits

12 Months Ended

Dec. 31, 2020

Retirement Benefits [Abstract]

Pensions and Other Postretirement Benefits

Employee Pension and Other Postretirement Benefit Plans

Defined Benefit Pension Plans Defined benefit pension plans covering eligible U.S. hourly employees (hired prior to October 2007) and Canadian hourly employees (hired prior to October 2016) generally provide benefits of negotiated, stated amounts for each year of service and supplemental benefits for employees who retire with 30 years of service before normal retirement age. The benefits provided by the defined benefit pension plans covering eligible U.S. (hired prior to January 1, 2001) and Canadian salaried employees and employees in certain other non-U.S. locations are generally based on years of service and compensation history. Accrual of defined pension benefits ceased in 2012 for U.S. and Canadian salaried employees. There is also an unfunded nonqualified pension plan primarily covering U.S. executives for service prior to January 1, 2007 and it is based on an “excess plan” for service after that date.

The funding policy for qualified defined benefit pension plans is to contribute annually not less than the minimum required by applicable laws and regulations or to directly pay benefit payments where appropriate. In the year ended December 31, 2020 all legal funding requirements were met. The following table summarizes contributions made to the defined benefit pension plans:


	Years Ended December 31,
	2020		2019		2018
U.S. hourly and salaried	$	68	$	83	$	76
Non-U.S.	396		532		1,624
Total	$	464	$	615	$	1,700

We expect to contribute approximately $70 million to our U.S. non-qualified plans and approximately $500 million to our non-U.S. pension plans in 2021.

Based on our current assumptions, over the next five years we expect no significant mandatory contributions to our U.S. qualified pension plans and mandatory contributions totaling $366 million to our U.K. and Canada pension plans.

Other Postretirement Benefit Plans Certain hourly and salaried defined benefit plans provide postretirement medical, dental, legal service and life insurance to eligible U.S. and Canadian retirees and their eligible dependents. Certain other non-U.S. subsidiaries have postretirement benefit plans, although most non-U.S. employees are covered by government sponsored or administered programs. We made contributions to the U.S. OPEB plans of $343 million, $326 million and $325 million in the years ended December 31, 2020, 2019 and 2018. Plan participants' contributions were insignificant in the years ended December 31, 2020, 2019 and 2018.

Defined Contribution Plans We have defined contribution plans for eligible U.S. salaried and hourly employees that provide discretionary matching contributions. Contributions are also made to certain non-U.S. defined contribution plans. We made contributions to our defined contribution plans of $573 million, $537 million and $617 million in the years ended December 31, 2020, 2019 and 2018.

Significant Plan Amendments, Benefit Modifications and Related Events

Other Remeasurements The SOA issued mortality improvement tables in the three months ended December 31, 2020. We incorporated these SOA mortality improvement tables into the December 31, 2020 measurement of our U.S. pension and OPEB plans' benefit obligations. The change in these assumptions decreased the December 31, 2020 U.S. pension and OPEB plans' obligations by $686 million. We incorporated the mortality improvement tables issued by the SOA in the three months ended December 31, 2018, and updated our base mortality assumptions in the U.S. This change in assumption decreased the December 31, 2018 U.S. pension and OPEB plans' obligations by $264 million.

Pension and OPEB Obligations and Plan Assets


	Year Ended December 31, 2020						Year Ended December 31, 2019
	Pension Benefits				Global OPEB Plans		Pension Benefits				Global OPEB Plans
	U.S.		Non-U.S.				U.S.		Non-U.S.
Change in benefit obligations
Beginning benefit obligation	$	64,684	$	21,398	$	6,304	$	61,190	$	19,904	$	5,744
Service cost	177		133		19		179		120		17
Interest cost	1,716		362		173		2,264		456		220


Actuarial losses	4,757		1,506		551		6,444		1,653		641
Benefits paid	(4,600)		(1,132)		(408)		(4,753)		(1,234)		(395)
Foreign currency translation adjustments	—		870		(3)		—		561		54

Curtailments, settlements and other	(266)		(2,330)		20		(640)		(62)		23
Ending benefit obligation	66,468		20,807		6,656		64,684		21,398		6,304
Change in plan assets
Beginning fair value of plan assets	59,239		14,961		—		56,102		13,528		—
Actual return on plan assets	6,635		1,573		—		8,454		1,669		—
Employer contributions	68		396		387		83		532		370

Benefits paid	(4,600)		(1,132)		(408)		(4,753)		(1,234)		(395)
Foreign currency translation adjustments	—		389		—		—		668		—


Settlements and other	(265)		(2,341)		21		(647)		(202)		25
Ending fair value of plan assets	61,077		13,846		—		59,239		14,961		—
Ending funded status	$	(5,391)	$	(6,961)	$	(6,656)	$	(5,445)	$	(6,437)	$	(6,304)
Amounts recorded in the consolidated balance sheets
Non-current assets	$	—	$	980	$	—	$	—	$	698	$	—
Current liabilities	(66)		(364)		(379)		(68)		(342)		(369)
Non-current liabilities	(5,325)		(7,577)		(6,277)		(5,377)		(6,793)		(5,935)
Net amount recorded	$	(5,391)	$	(6,961)	$	(6,656)	$	(5,445)	$	(6,437)	$	(6,304)
Amounts recorded in Accumulated other comprehensive loss
Net actuarial loss	$	(3,256)	$	(5,123)	$	(1,823)	$	(1,980)	$	(4,688)	$	(1,364)
Net prior service (cost) credit	11		(60)		20		14		(78)		27
Total recorded in Accumulated other comprehensive loss	$	(3,245)	$	(5,183)	$	(1,803)	$	(1,966)	$	(4,766)	$	(1,337)

In the years ended December 31, 2020 and 2019, the actuarial losses on the benefit obligations were primarily due to decreases in discount rates for all plans.

The following table summarizes the total accumulated benefit obligations (ABO), the ABO and fair value of plan assets for defined benefit pension plans with ABO in excess of plan assets, and the projected benefit obligation (PBO) and fair value of plan assets for defined benefit pension plans with PBO in excess of plan assets:


	December 31, 2020				December 31, 2019
	U.S.		Non-U.S.		U.S.		Non-U.S.
ABO	$	66,448	$	20,721	$	64,669	$	21,319
Plans with ABO in excess of plan assets
ABO	$	66,448	$	12,042	$	64,669	$	10,996
Fair value of plan assets	$	61,077	$	4,185	$	59,239	$	3,940
Plans with PBO in excess of plan assets
PBO	$	66,468	$	12,128	$	64,684	$	11,079
Fair value of plan assets	$	61,077	$	4,186	$	59,239	$	3,940

The following table summarizes the components of net periodic pension and OPEB expense along with the assumptions used to determine benefit obligations:


	Year Ended December 31, 2020									Year Ended December 31, 2019									Year Ended December 31, 2018
	Pension Benefits						Global OPEB Plans			Pension Benefits						Global OPEB Plans			Pension Benefits						Global OPEB Plans
	U.S.			Non-U.S.						U.S.			Non-U.S.						U.S.			Non-U.S.
Components of expense
Service cost	$	251		$	145		$	19		$	393		$	132		$	17		$	330		$	163		$	20
Interest cost	1,716			362			173			2,264			456			220			2,050			464			195
Expected return on plan assets	(3,267)			(675)			—			(3,483)			(786)			—			(3,890)			(825)			—
Amortization of net actuarial losses	16			171			74			11			122			30			10			144			54
Curtailments, settlements and other	17			241			(8)			21			142			(23)			(19)			43			(19)
Net periodic pension and OPEB (income) expense	$	(1,267)		$	244		$	258		$	(794)		$	66		$	244		$	(1,519)		$	(11)		$	250
Weighted-average assumptions used to determine benefit obligations(a)
Discount rate	2.37		%	1.62		%	2.53		%	3.20		%	2.16		%	3.24		%	4.22		%	2.86		%	4.19		%
Weighted-average assumptions used to determine net expense(a)
Discount rate	2.84		%	2.80		%	3.00		%	3.92		%	3.36		%	4.07		%	3.19		%	2.99		%	3.29		%
Expected rate of return on plan assets	5.88		%	4.96		%	N/A			6.37		%	5.76		%	N/A			6.61		%	6.09		%	N/A

_________

(a) The rate of compensation increase and the cash balance interest crediting rates do not have a significant effect on our U.S. pension and OPEB plans.

The non-service cost components of the net periodic pension and OPEB income are presented in Interest income and other non-operating income, net. Refer to Note 19 for additional information.

U.S. pension plan service cost includes administrative expenses and Pension Benefit Guarantee Corporation premiums were insignificant, $214 million and $121 million for the years ended December 31, 2020, 2019 and 2018. Weighted-average assumptions used to determine net expense are determined at the beginning of the period and updated for remeasurements. Non-U.S. pension plan administrative expenses included in service cost were insignificant in the years ended December 31, 2020, 2019 and 2018.

In the three months ended December 31, 2020, we completed a $1.5 billion annuity purchase for salaried retirees in Canada. This resulted in a non-operating pension settlement charge of $130 million.

Assumptions

Investment Strategies and Long-Term Rate of Return Detailed periodic studies are conducted by our internal asset management group as well as outside actuaries and are used to determine the long-term strategic mix among asset classes, risk mitigation strategies and the expected long-term return on asset assumptions for the U.S. pension plans. The U.S. study includes a review of alternative asset allocation and risk mitigation strategies, anticipated future long-term performance and risk of the individual asset classes that comprise the plans' asset mix. Similar studies are performed for the significant non-U.S. pension plans with the assistance of outside actuaries and asset managers. While the studies incorporate data from recent plan performance and historical returns, the expected rate of return on plan assets represents our estimate of long-term prospective rates of return.

We continue to pursue various options to fund and de-risk our pension plans, including continued changes to the pension asset portfolio mix to reduce funded status volatility. The strategic asset mix and risk mitigation strategies for the plans are tailored specifically for each plan. Individual plans have distinct liabilities, liquidity needs and regulatory requirements. Consequently there are different investment policies set by individual plan fiduciaries. Although investment policies and risk mitigation strategies may differ among plans, each investment strategy is considered to be appropriate in the context of the specific factors affecting each plan.

In setting new strategic asset mixes, consideration is given to the likelihood that the selected asset mixes will effectively fund the projected pension plan liabilities, while aligning with the risk tolerance of the plans' fiduciaries. The strategic asset mixes for U.S. defined benefit pension plans are increasingly designed to satisfy the competing objectives of improving funded positions (market value of assets equal to or greater than the present value of the liabilities) and mitigating the possibility of a deterioration in funded status.

Derivatives may be used to provide cost effective solutions for rebalancing investment portfolios, increasing or decreasing exposure to various asset classes and for mitigating risks, primarily interest rate, equity and currency risks. Equity and fixed income managers are permitted to utilize derivatives as efficient substitutes for traditional securities. Interest rate derivatives may be used to adjust portfolio duration to align with a plan's targeted investment policy and equity derivatives may be used to protect equity positions from downside market losses. Alternative investment managers are permitted to employ leverage, including through the use of derivatives, which may alter economic exposure.

In December 2020, an investment policy study was completed for the U.S. pension plans. As a result of changes to our capital market assumptions, the weighted-average long-term rate of return on assets decreased from 5.9% at December 31, 2019 to 5.6% at December 31, 2020. The expected long-term rate of return on plan assets used in determining pension expense for non-U.S. plans is determined in a similar manner to the U.S. plans.

Target Allocation Percentages The following table summarizes the target allocations by asset category for U.S. and non-U.S. defined benefit pension plans:


	December 31, 2020				December 31, 2019
	U.S.		Non-U.S.		U.S.		Non-U.S.
Equity	12	%	16	%	12	%	14	%
Debt	64	%	66	%	64	%	67	%
Other(a)	24	%	18	%	24	%	19	%
Total	100	%	100	%	100	%	100	%

__________

(a) Primarily includes private equity, real estate and absolute return strategies which mainly consist of hedge funds.

Assets and Fair Value Measurements The following tables summarize the fair value of U.S. and non-U.S. defined benefit pension plan assets by asset class:


	December 31, 2020								December 31, 2019
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
U.S. Pension Plan Assets


Common and preferred stocks	$	7,429	$	—	$	1	$	7,430	$	6,232	$	19	$	1	$	6,252
Government and agency debt securities(a)	—		13,231		—		13,231		—		13,843		—		13,843
Corporate and other debt securities	—		26,475		—		26,475		—		24,809		—		24,809



Other investments, net(b)(c)	(834)		(8)		427		(415)		(47)		25		401		379




Net plan assets subject to leveling	$	6,595	$	39,698	$	428	46,721		$	6,185	$	38,696	$	402	45,283
Plan assets measured at net asset value
Investment funds							7,534								7,031
Private equity and debt investments							3,137								2,951
Real estate investments							3,061								3,484
Total plan assets measured at net asset value							13,732								13,466
Other plan assets, net(d)							624								490
Net plan assets							$	61,077							$	59,239


	December 31, 2020								December 31, 2019
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Non-U.S. Pension Plan Assets


Common and preferred stocks	$	572	$	—	$	—	$	572	$	489	$	1	$	—	$	490
Government and agency debt securities(a)	—		3,178		—		3,178		—		3,927		—		3,927
Corporate and other debt securities	—		2,762		—		2,762		—		3,230		—		3,230



Other investments, net(b)(e)	31		(79)		127		79		(5)		(107)		248		136




Net plan assets subject to leveling	$	603	$	5,861	$	127	6,591		$	484	$	7,051	$	248	7,783
Plan assets measured at net asset value
Investment funds							5,870								5,608
Private equity and debt investments							489								511
Real estate investments							917								982
Total plan assets measured at net asset value							7,276								7,101
Other plan assets (liabilities), net(d)							(21)								77
Net plan assets							$	13,846							$	14,961

__________

(a)Includes U.S. and sovereign government and agency issues.

(b)Includes net derivative assets (liabilities).

(c)Level 1 Other investments, net includes derivative liabilities approximating $1.0 billion related to equity option and futures contracts at December 31, 2020.

(d)Cash held by the plans, net of amounts receivable/payable for unsettled security transactions and payables for investment manager fees, custody fees and other expenses.

(e)Level 2 Other investments, net includes Canadian reverse repurchase agreements.

The activity attributable to U.S. and non-U.S. Level 3 defined benefit pension plan investments was insignificant in the years ended December 31, 2020 and 2019.

Investment Fund Strategies Investment funds include hedge funds, funds of hedge funds, equity funds and fixed income funds. Hedge funds and funds of hedge funds managers typically seek to achieve their objectives by allocating capital across a broad array of funds and/or investment managers. Equity funds invest in U.S. common and preferred stocks as well as similar equity securities issued by companies incorporated, listed or domiciled in developed and/or emerging market countries. Fixed income funds include investments in high quality funds and, to a lesser extent, high yield funds. High quality fixed income funds invest in government securities, investment-grade corporate bonds and mortgage and asset-backed securities. High yield fixed income funds invest in high yield fixed income securities issued by corporations which are rated below investment grade. Other investment funds also included in this category primarily represent multi-strategy funds that invest in broadly diversified portfolios of equity, fixed income and derivative instruments.

Private equity and debt investments primarily consist of investments in private equity and debt funds. These investments provide exposure to and benefit from long-term equity investments in private companies, including leveraged buy-outs, venture capital and distressed debt strategies.

Real estate investments include funds that invest in entities which are primarily engaged in the ownership, acquisition, development, financing, sale and/or management of income-producing real estate properties, both commercial and residential. These funds typically seek long-term growth of capital and current income that is above average relative to public equity funds.

Significant Concentrations of Risk The assets of the pension plans include certain investment funds, private equity and debt investments and real estate investments. Investment managers may be unable to quickly sell or redeem some or all of these investments at an amount close or equal to fair value in order to meet a plan's liquidity requirements or to respond to specific events such as deterioration in the creditworthiness of any particular issuer or counterparty.

Illiquid investments held by the plans are generally long-term investments that complement the long-term nature of pension obligations and are not used to fund benefit payments when currently due. Plan management monitors liquidity risk on an ongoing basis and has procedures in place that are designed to maintain flexibility in addressing plan-specific, broader industry and market liquidity events.

The pension plans may invest in financial instruments denominated in foreign currencies and may be exposed to risks that the foreign currency exchange rates might change in a manner that has an adverse effect on the value of the foreign currency denominated assets or liabilities. Forward currency contracts may be used to manage and mitigate foreign currency risk.

The pension plans may invest in debt securities for which any change in the relevant interest rates for particular securities might result in an investment manager being unable to secure similar returns upon the maturity or the sale of securities. In addition, changes to prevailing interest rates or changes in expectations of future interest rates might result in an increase or decrease in the fair value of the securities held. Interest rate swaps and other financial derivative instruments may be used to manage interest rate risk.

Benefit Payments Benefits for most U.S. pension plans and certain non-U.S. pension plans are paid out of plan assets rather than our Cash and cash equivalents. The following table summarizes net benefit payments expected to be paid in the future, which include assumptions related to estimated future employee service:


	Pension Benefits				Global OPEB Plans
	U.S. Plans		Non-U.S. Plans		Global OPEB Plans
2021	$	4,821	$	1,172	$	379
2022	$	4,614	$	1,070	$	374
2023	$	4,495	$	1,038	$	369
2024	$	4,387	$	1,015	$	364
2025	$	4,278	$	1,000	$	361
2026 - 2030	$	19,469	$	4,673	$	1,761

- Definition

The entire disclosure for retirement benefits.

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+ Details

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation-Related Liability and Tax Administrative Matters In the normal course of our business, we are named from time to time as a defendant in various legal actions, including arbitrations, class actions and other litigation. We identify below the material individual proceedings and investigations where we believe a material loss is reasonably possible or probable. We accrue for matters when we believe that losses are probable and can be reasonably estimated. At December 31, 2020 and 2019, we had accruals of $1.2 billion and $1.3 billion in Accrued liabilities and Other liabilities. In many matters, it is inherently difficult to determine whether loss is probable or reasonably possible or to estimate the size or range of the possible loss. Accordingly adverse outcomes from such proceedings could exceed the amounts accrued by an amount that could be material to our results of operations or cash flows in any particular reporting period. Proceedings Related to Ignition Switch Recall and Other Recalls In 2014 we announced various recalls relating to safety and other matters. Those recalls included recalls to repair ignition switches that could under certain circumstances unintentionally move from the “run” position to the “accessory” or “off” position with a corresponding loss of power, which could in turn prevent airbags from deploying in the event of a crash. Appellate Litigation Regarding Successor Liability Ignition Switch Claims In 2016, the U.S. Court of Appeals for the Second Circuit held that the 2009 order of the United States Bankruptcy Court for the Southern District of New York (Bankruptcy Court) approving the sale of substantially all of the assets of Motors Liquidation Company (MLC) to GM free and clear of, among other things, claims asserting successor liability for obligations owed by MLC could not be enforced to bar claims against GM asserted by either plaintiffs who purchased used vehicles after the sale or against purchasers who asserted claims relating to the ignition switch defect, including pre-sale personal injury claims and economic-loss claims. Economic-Loss Claims We are aware of over 100 putative class actions that were filed against GM in U.S. and Canadian courts alleging that consumers who purchased or leased vehicles manufactured by GM or MLC had been economically harmed by one or more of the 2014 recalls and/or the underlying vehicle conditions associated with those recalls (economic-loss cases). In general, these economic-loss cases seek recovery for purported compensatory damages, such as alleged benefit-of-the-bargain damages or damages related to alleged diminution in value of the vehicles, as well as punitive damages, injunctive relief and other relief. Many of the pending U.S. economic-loss claims have been transferred to, and consolidated in, a single federal court, the U.S. District Court for the Southern District of New York (Southern District). These plaintiffs have asserted economic-loss claims under federal and state laws, including claims relating to recalled vehicles manufactured by GM and claims asserting successor liability relating to certain recalled vehicles manufactured by MLC. In August 2017, the Southern District granted our motion to dismiss the successor liability claims of plaintiffs in seven of the sixteen states at issue on the motion and called for additional briefing to decide whether plaintiffs' claims can proceed in the other nine states. In December 2017, the Southern District granted GM's motion and dismissed the plaintiffs' successor liability claims in an additional state, but found that there are genuine issues of material fact that prevent summary judgment for GM in eight other states. In January 2018, GM moved for reconsideration of certain portions of the Southern District's December 2017 summary judgment ruling. That motion was granted in April 2018, dismissing plaintiffs' successor liability claims in any state where New York law applies. In September 2018, the Southern District granted our motion to dismiss claims for lost personal time (in 41 out of 47 jurisdictions) and certain unjust enrichment claims, but denied our motion to dismiss plaintiffs' economic loss claims in 27 jurisdictions under the "manifest defect" rule. In August 2019, the Southern District granted our motion for summary judgment on plaintiffs’ economic loss “benefit of the bargain” damage claims (the August 2019 Opinion). The Southern District held that plaintiffs’ conjoint analysis-based damages model failed to establish that plaintiffs suffered difference-in-value damages and without such evidence, plaintiffs’ difference-in-value damage claims fail under the laws of all three bellwether states: California, Missouri and Texas. Later in August 2019, the bellwether plaintiffs filed a motion requesting that the Southern District reconsider its summary judgment decision or allow an interlocutory appeal if reconsideration is denied. In December 2019, the Southern District denied plaintiffs' motion for reconsideration of the August 2019 Opinion, but granted the plaintiffs' motion for certification of an interlocutory appeal. On April 1, 2020, the Second Circuit Court of Appeals (the Second Circuit) granted the bellwether plaintiffs' petition seeking leave to appeal the August 2019 Opinion. On April 15, 2020, the bellwether plaintiffs and GM filed a Stipulation to withdraw the appeal from the Second Circuit based on the class settlement agreement described below. In September 2019, GM filed an updated motion for summary judgment on plaintiffs’ remaining economic loss claims that were not addressed in the Southern District’s August 2019 Opinion and renewed its evidentiary motion seeking to strike the opinions of plaintiff’s expert on plaintiffs’ alleged “lost time” damages associated with having the recall repairs performed. In March 2020, GM, plaintiffs and the MLC GUC Trust (GUC Trust) reached a settlement agreement (Class Settlement Agreement) to resolve on a national basis the economic loss claims of the proposed settlement class and proposed sub-classes, consisting of consumers who purchased or leased GM vehicles covered by the seven 2014 safety recalls at issue in the Southern District and the Bankruptcy Court. The proposed Class Settlement Agreement provides a common fund of approximately $120 million for settlement class members, of which GM will fund approximately $70 million and the GUC Trust will fund the remaining $50 million. GM will also pay attorneys’ fees and costs that may be awarded by the Southern District to plaintiffs’ counsel up to a maximum of $35 million. In April 2020, the Avoidance Action Trust (AAT), GM and plaintiffs reached a tentative settlement under which the AAT will pay an insignificant amount and will be added as a settling party to the Class Settlement Agreement. During April and May 2020, the Southern District entered orders granting preliminary approval of the Class Settlement Agreement. In December 2020, the Southern District conducted a final fairness hearing and issued an order granting final approval of the Class Settlement Agreement in its entirety. The order granting final approval became final, effective and binding in January 2021. The deadline for class members to file claims is April 2021. Contingently Issuable Shares Under the Amended and Restated Master Sale and Purchase Agreement between GM and MLC, GM was obligated to issue Adjustment Shares of our common stock if allowed general unsecured claims against the GUC Trust, as estimated by the Bankruptcy Court, exceed $35.0 billion. In March 2020, in conjunction with the Class Settlement Agreement, the GUC Trust filed a motion in the Bankruptcy Court seeking approval to enter into and take actions necessary to execute the Class Settlement Agreement, and seeking Bankruptcy Court authorization permitting the GUC Trust to distribute $300 million of GUC Trust assets to its unitholders and entry into a mutual release agreement with GM that would release GM from any and all claims, including any that would require GM to issue any Adjustment Shares. Bankruptcy Court approval of the GUC Trust motion is a condition precedent to preliminary approval of the Class Settlement Agreement by the Southern District. In April 2020, the Bankruptcy Court entered an order approving the GUC Trust's motion in its entirety. In May 2020, the approval and the mutual release agreement became binding and enforceable and GM was fully released from its potential Adjustment Shares obligation. Personal Injury Claims We also are aware of less than one hundred active personal injury actions, exclusive of matters subject to settlements in principal, pending in various courts in the U.S. and Canada alleging injury or death as a result of defects that may be the subject of the 2014 recalls. In general, these cases seek recovery for purported compensatory damages, punitive damages and/or other relief. Since 2016, several bellwether trials of these cases have taken place in the Southern District and in a Texas state court, which is administering a Texas state multi-district litigation. None of these trials resulted in a finding of liability against GM. Government Matters In connection with the 2014 recalls, we have from time to time received subpoenas and other requests for information related to investigations by agencies or other representatives of U.S. federal, state and the Canadian governments. GM is cooperating with all reasonable pending requests for information. Any existing governmental matters or investigations could in the future result in the imposition of damages, fines, civil consent orders, civil and criminal penalties or other remedies. The total amount accrued for the 2014 recalls at December 31, 2020, reflects amounts for a combination of settled but unpaid matters, and for the remaining unsettled investigations, claims and/or lawsuits relating to the ignition switch recalls and other related recalls to the extent that such matters are probable and can be reasonably estimated. The amounts accrued for those unsettled investigations, claims, and/or lawsuits represent a combination of our best single point estimates where determinable and, where no such single point estimate is determinable, our estimate of the low end of the range of probable loss with regard to such matters, if that is determinable. We will continue to consider resolution of pending matters involving ignition switch recalls and other recalls where it makes sense to do so. GM Korea Wage Litigation GM Korea is party to litigation with current and former hourly employees in the appellate court and Incheon District Court in Incheon, Korea. The group actions, which in the aggregate involve more than 10,000 employees, allege that GM Korea failed to include bonuses and certain allowances in its calculation of Ordinary Wages due under Korean regulations. In 2012 the Seoul High Court (an intermediate-level appellate court) affirmed a decision in one of these group actions involving five GM Korea employees which was contrary to GM Korea's position. GM Korea appealed to the Supreme Court of the Republic of Korea (Korean Supreme Court). In 2014 the Korean Supreme Court largely agreed with GM Korea's legal arguments and remanded the case to the Seoul High Court for consideration consistent with earlier Korean Supreme Court precedent holding that while fixed bonuses should be included in the calculation of Ordinary Wages, claims for retroactive application of this rule would be barred under certain circumstances. In 2015, on reconsideration, the Seoul High Court held in GM Korea's favor, after which the plaintiffs appealed to the Korean Supreme Court. In July 2020, the Korean Supreme Court held in GM Korea's favor. In light of this decision, we believe the probability that we will incur a material loss is remote and we estimate our loss in excess of amounts accrued is insignificant at December 31, 2020. GM Korea is also party to litigation with current and former salaried employees over allegations relating to Ordinary Wages regulation and whether to include fixed bonuses in the calculation of Ordinary Wages. In 2017, the Seoul High Court held that certain workers are not barred from filing retroactive wage claims. GM Korea appealed this ruling to the Korean Supreme Court. The Korean Supreme Court has not yet rendered a decision. We estimate our reasonably possible loss in excess of amounts accrued to be approximately $190 million at December 31, 2020. Both the scope of claims asserted and GM Korea's assessment of any or all of the individual claim elements may change if new information becomes available or the legal or regulatory frameworks change. GM Korea is also party to litigation with current and former subcontract workers over allegations that they are entitled to the same wages and benefits provided to full-time employees, and to be hired as full-time employees. In May 2018 and September 2020, the Korean labor authorities issued adverse administrative orders finding that GM Korea must hire certain current subcontract workers as full-time employees. GM Korea appealed the May 2018 order and plans to appeal the September 2020 order. In June 2020, the Seoul High Court ruled against GM Korea in one of the subcontract worker claims. GM Korea has appealed this decision to the Korean Supreme Court. At December 31, 2020, our accrual covering certain asserted claims and claims that we believe are probable of assertion and for which liability is probable was approximately $240 million. We estimate the reasonably possible loss in excess of amounts accrued for other current subcontract workers who may assert similar claims to be approximately $120 million at December 31, 2020. We are currently unable to estimate any possible loss or range of loss that may result from additional claims that may be asserted by former subcontract workers. GM Brazil Indirect Tax Claim In 2019, the Superior Court of Brazil rendered favorable decisions on three cases brought by GM Brazil challenging whether a certain state value-added tax should be included in the calculation of federal gross receipts taxes. Those decisions granted the Company the right to recover, through offset of federal tax liabilities, certain amounts collected by the government between August 2001 and February 2017. As a result, GM Brazil recorded pre-tax recoveries of $1.4 billion in Automotive and other cost of sales in the year ended December 31, 2019. Realization of these recoveries depends on the timing of administrative approvals and generation of federal tax liabilities eligible for offset. The Brazilian IRS has filed a Motion of Clarification on this matter with the Brazilian Supreme Court, which motion is awaiting decision. In addition, we expect third parties to make claims on some or all of the pre-tax recoveries, against which GM intends to defend. Other Litigation-Related Liability and Tax Administrative Matters Various other legal actions, including class actions, governmental investigations, claims and proceedings, are pending against us or our related companies or joint ventures, including matters arising out of alleged product defects; employment-related matters; product and workplace safety, vehicle emissions and fuel economy regulations; product warranties; financial services; dealer, supplier and other contractual relationships; government regulations relating to competition issues; tax-related matters not subject to the provision of Accounting Standards Codification 740, Income Taxes (indirect tax-related matters); product design, manufacture and performance; consumer protection laws; and environmental protection laws, including laws regulating air emissions, water discharges, waste management and environmental remediation from stationary sources. There are several putative class actions pending against GM in federal courts in the U.S. and in the Provincial Courts in Canada alleging that various vehicles sold, including model year 2011-2016 Duramax Diesel Chevrolet Silverado and GMC Sierra vehicles, violate federal, state and foreign emission standards. We are unable to estimate any reasonably possible loss or range of loss that may result from these actions. GM has also faced a series of additional lawsuits in the U.S. based on these allegations, including putative shareholder class actions claiming violations of federal securities law and a shareholder demand lawsuit. The securities lawsuits have been voluntarily dismissed by the plaintiffs in those actions. We believe that appropriate accruals have been established for losses that are probable and can be reasonably estimated. It is possible that the resolution of one or more of these matters could exceed the amounts accrued in an amount that could be material to our results of operations. We also from time to time receive subpoenas and other inquiries or requests for information from agencies or other representatives of U.S. federal, state and foreign governments on a variety of issues. Indirect tax-related matters are being litigated globally pertaining to value added taxes, customs, duties, sales, property taxes and other non-income tax related tax exposures. The various non-U.S. labor-related matters include claims from current and former employees related to alleged unpaid wage, benefit, severance and other compensation matters. Certain administrative proceedings are indirect tax-related and may require that we deposit funds in escrow or provide an alternative form of security. Some of the matters may involve compensatory, punitive or other treble damage claims, environmental remediation programs or sanctions that, if granted, could require us to pay damages or make other expenditures in amounts that could not be reasonably estimated at December 31, 2020. We believe that appropriate accruals have been established for losses that are probable and can be reasonably estimated. For indirect tax-related matters we estimate our reasonably possible loss in excess of amounts accrued to be up to approximately $750 million at December 31, 2020. Takata Matters In May 2016, NHTSA issued an amended consent order requiring Takata to file defect information reports (DIRs) for previously unrecalled front airbag inflators that contain phased-stabilized ammonium nitrate-based propellant without a moisture absorbing desiccant on a multi-year, risk-based schedule through 2019 impacting tens of millions of vehicles produced by numerous automotive manufacturers. NHTSA concluded that the likely root cause of the rupturing of the airbag inflators is a function of time, temperature cycling and environmental moisture. In cooperation with NHTSA we filed Preliminary DIRs covering certain of our GMT900 vehicles, which are full-size pickup trucks and SUVs, and petitions for inconsequentiality with respect to the vehicles subject to those Preliminary DIRs. In November 2020, NHTSA denied GM's petitions for inconsequentiality relating to the Takata passenger-side inflators in certain GMT900 vehicles. NHTSA has directed that we replace the airbag inflators in the vehicles in question, and we have decided not to contest NHTSA's decision. While we have already begun the process of executing the recall, given the number of vehicles in this population, the recall will take several years to be completed. Accordingly, in the three months ended December 31, 2020, we recorded a warranty accrual of $1.1 billion for the expected costs of complying with the recall remedy. GM has recalled certain vehicles sold outside of the U.S. to replace Takata inflators in those vehicles. There are significant differences in vehicle and inflator design between the relevant vehicles sold internationally and those sold in the U.S. We continue to gather and analyze evidence about these inflators and to share our findings with regulators. Additional recalls, if any, could be material to our results of operations and cash flows. We continue to monitor the international situation. There are several putative class actions that have been filed against GM, including in the federal courts in the U.S., in the Provincial Courts in Canada, and in Mexico and Israel, arising out of allegations that airbag inflators manufactured by Takata are defective. At this stage of these proceedings, we are unable to provide an estimate of the amounts or range of possible loss. Product Liability We recorded liabilities of $589 million and $544 million in Accrued liabilities and Other liabilities at December 31, 2020 and 2019, for the expected cost of all known product liability claims, plus an estimate of the expected cost for product liability claims that have already been incurred and are expected to be filed in the future for which we are self-insured. It is reasonably possible that our accruals for product liability claims may increase in future periods in material amounts, although we cannot estimate a reasonable range of incremental loss based on currently available information. Other than claims relating to the ignition switch recalls discussed above, we believe that any judgment against us involving our and MLC products for actual damages will be adequately covered by our recorded accruals and, where applicable, excess liability insurance coverage. Guarantees We enter into indemnification agreements for liability claims involving products manufactured primarily by certain joint ventures. These guarantees terminate in years ranging from 2021 to 2026 or upon the occurrence of specific events or are ongoing. We believe that the related potential costs incurred are adequately covered by our recorded accruals, which are insignificant. The maximum future undiscounted payments mainly based on vehicles sold to date were $3.1 billion and $2.6 billion for these guarantees at December 31, 2020 and 2019, the majority of which relates to the indemnification agreements. We provide payment guarantees on commercial loans outstanding with third parties such as dealers. In some instances certain assets of the party or our payables to the party whose debt or performance we have guaranteed may offset, to some degree, the amount of any potential future payments. We are also exposed to residual value guarantees associated with certain sales to rental car companies. We periodically enter into agreements that incorporate indemnification provisions in the normal course of business. It is not possible to estimate our maximum exposure under these indemnifications or guarantees due to the conditional nature of these obligations. Insignificant amounts have been recorded for such obligations as the majority of them are not probable or estimable at this time and the fair value of the guarantees at issuance was insignificant. Refer to Note 22 for additional information on our indemnification obligations to PSA Group under the Master Agreement (the Agreement). Credit Cards Credit card programs offer rebates that can be applied primarily against the purchase or lease of our vehicles. At December 31, 2020 and 2019, our redemption liability was insignificant, our deferred revenue was $252 million and $253 million, and qualified cardholders had rebates available, net of deferred program revenue, of $1.3 billion and $1.4 billion. Our redemption liability and deferred revenue are recorded in Accrued liabilities and Other liabilities. Operating Leases Our portfolio of leases primarily consists of real estate office space, manufacturing and warehousing facilities, land and equipment. Certain leases contain escalation clauses and renewal or purchase options, and generally our leases have no residual value guarantees or material covenants. We exclude leases with a term of one year or less from our balance sheet, and do not separate non-lease components from our real estate leases. Rent expense under operating leases was $317 million and $354 million in the years ended December 31, 2020 and 2019. Prior to adoption of ASU 2016-02, "Leases", rent expense under operating leases was $300 million in the year ended December 31, 2018. Variable lease costs were insignificant in the years ended December 31, 2020 and 2019. At December 31, 2020 and 2019, operating lease right of use assets in Other assets were $1.0 billion and $1.1 billion, operating lease liabilities in Accrued liabilities were $209 million and $239 million and non-current operating lease liabilities in Other liabilities were $969 million and $1.0 billion. Operating lease right of use assets obtained in exchange for lease obligations were $222 million and $497 million in the years ended December 31, 2020 and 2019. Our undiscounted future lease obligations related to operating leases having initial terms in excess of one year are $251 million, $205 million, $196 million, $151 million, $122 million and $437 million for the years 2021, 2022, 2023, 2024, 2025 and thereafter, with imputed interest of $184 million as of December 31, 2020. The weighted average discount rate was 4.0% and 4.2% and the weighted-average remaining lease term was 7.4 years and 7.2 years at December 31, 2020 and 2019. Payments for operating leases included in Net cash provided by (used in) operating activities were $309 million and $337 million in the years ended December 31, 2020 and 2019. Lease agreements that have not yet commenced were $150 million at December 31, 2020.

Income Taxes

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Income Taxes


	Years Ended December 31,
	2020		2019		2018
U.S. income	$	6,881	$	3,826	$	4,433
Non-U.S. income	540		2,342		1,953
Income before income taxes and equity income	$	7,421	$	6,168	$	6,386


	Years Ended December 31,
	2020		2019		2018
Current income tax expense (benefit)
U.S. federal	$	84	$	42	$	(104)
U.S. state and local	272		102		113
Non-U.S.	493		758		577
Total current income tax expense	849		902		586
Deferred income tax expense (benefit)
U.S. federal	632		(145)		(578)
U.S. state and local	(15)		3		250
Non-U.S.	308		9		216
Total deferred income tax expense (benefit)	925		(133)		(112)
Total income tax expense	$	1,774	$	769	$	474

Provisions are made for estimated U.S. and non-U.S. income taxes which may be incurred on the reversal of our basis differences in investments in foreign subsidiaries and corporate joint ventures not deemed to be indefinitely reinvested. Taxes have not been provided on basis differences in investments primarily as a result of earnings in foreign subsidiaries which are deemed indefinitely reinvested of $3.2 billion at December 31, 2020 and 2019. Additional basis differences related to investments in nonconsolidated China JVs exist of $4.1 billion at December 31, 2020 and 2019 as a result of fresh-start reporting. Quantification of the deferred tax liability, if any, associated with indefinitely reinvested basis differences is not practicable.


	Years Ended December 31,
	2020		2019		2018
Income tax expense at U.S. federal statutory income tax rate	$	1,558	$	1,295	$	1,341
State and local tax expense	219		117		282
Non-U.S. income taxed at other than the U.S. federal statutory tax rate	(1)		166		90
U.S. tax impact on Non-U.S. income and activities	(160)		(197)		(822)
Change in valuation allowances	370		(233)		1,695
Change in tax laws	—		(122)		(134)
General business credits and manufacturing incentives	(366)		(420)		(695)
Capital loss expiration	—		—		107
Settlements of prior year tax matters	(18)		—		(188)
Realization of basis differences in affiliates	(12)		—		(59)
German statutory approval of net operating losses	—		—		(990)
Foreign currency remeasurement	(7)		74		19
Other adjustments	191		89		(172)
Total income tax expense	$	1,774	$	769	$	474

Deferred Income Tax Assets and Liabilities Deferred income tax assets and liabilities at December 31, 2020 and 2019 reflect the effect of temporary differences between amounts of assets, liabilities and equity for financial reporting purposes and the bases of such assets, liabilities and equity as measured based on tax laws, as well as tax loss and tax credit carryforwards. The following table summarizes the components of temporary differences and carryforwards that give rise to deferred tax assets and liabilities:


	December 31, 2020		December 31, 2019
Deferred tax assets
Postretirement benefits other than pensions	$	1,742	$	1,695
Pension and other employee benefit plans	2,999		2,968
Warranties, dealer and customer allowances, claims and discounts	5,538		6,299

U.S. capitalized research expenditures	6,763		6,035
U.S. operating loss and tax credit carryforwards(a)	7,254		8,686
Non-U.S. operating loss and tax credit carryforwards(b)	7,216		6,731
Miscellaneous	3,479		1,965
Total deferred tax assets before valuation allowances	34,991		34,379
Less: valuation allowances	(9,095)		(8,135)
Total deferred tax assets	25,896		26,244
Deferred tax liabilities
Property, plant and equipment	1,670		1,565
Intangible assets	744		763
Total deferred tax liabilities	2,414		2,328
Net deferred tax assets	$	23,482	$	23,916

_________

(a) At December 31, 2020, U.S. operating loss and tax credit carryforwards of $7.1 billion expire by 2040 if not utilized and the remaining balance of $137 million may be carried forward indefinitely.

(b) At December 31, 2020, Non-U.S. operating loss and tax credit carryforwards of $1.3 billion expire by 2040 if not utilized and the remaining balance of $5.9 billion may be carried forward indefinitely.

Valuation Allowances During the years ended December 31, 2020 and 2019, valuation allowances against deferred tax assets of $9.1 billion and $8.1 billion were comprised of cumulative losses, credits and other timing differences, primarily in Germany, Spain and South Korea.

Uncertain Tax Positions The following table summarizes activity of the total amounts of unrecognized tax benefits:


	Years Ended December 31,
	2020		2019		2018
Balance at beginning of period	$	775	$	1,341	$	1,557
Additions to current year tax positions	435		18		292
Additions to prior years' tax positions	26		13		264
Reductions to prior years' tax positions	(132)		(501)		(244)
Reductions in tax positions due to lapse of statutory limitations	(3)		(8)		(38)
Settlements	(10)		(93)		(450)
Other	(5)		5		(40)
Balance at end of period	$	1,086	$	775	$	1,341

At December 31, 2020 and 2019 there were $851 million and $539 million of unrecognized tax benefits that if recognized would favorably affect our effective tax rate in the future. In the years ended December 31, 2020, 2019 and 2018 income tax related interest and penalties were insignificant. At December 31, 2020 and 2019 we had liabilities of $92 million and $117 million for income tax related interest and penalties.

At December 31, 2020 it is not possible to reasonably estimate the expected change to the total amount of unrecognized tax benefits in the next twelve months.

Other Matters Income tax returns are filed in multiple jurisdictions and are subject to examination by taxing authorities throughout the world. We have open tax years from 2011 to 2020 with various significant tax jurisdictions. Tax authorities may have the ability to review and adjust net operating loss or tax credit carryforwards that were generated prior to these periods if utilized in an open tax year. These open years contain matters that could be subject to differing interpretations of applicable tax laws and regulations as they relate to the amount, character, timing or inclusion of revenue and expenses or the sustainability of income tax credits for a given audit cycle.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References + Details

Restructuring And Other Initiatives

12 Months Ended

Dec. 31, 2020

Restructuring and Related Activities [Abstract]

Restructuring and Other Initiatives

We have executed various restructuring and other initiatives and we may execute additional initiatives in the future, if necessary, to streamline manufacturing capacity and reduce other costs to improve the utilization of remaining facilities. To the extent these programs involve voluntary separations, a liability is generally recorded at the time offers to employees are accepted. To the extent these programs provide separation benefits in accordance with pre-existing agreements, a liability is recorded once the amount is probable and reasonably estimable. If employees are involuntarily terminated, a liability is generally recorded at the communication date. Related charges are recorded in Automotive and other cost of sales and Automotive and other selling, general and administrative expense.

The following table summarizes the reserves and charges related to restructuring and other initiatives, including postemployment benefit reserves and charges:


	Years Ended December 31,
	2020		2019		2018
Balance at beginning of period	$	564	$	1,122	$	227
Additions, interest accretion and other	565		629		1,637
Payments	(678)		(1,101)		(600)
Revisions to estimates and effect of foreign currency	(99)		(86)		(142)
Balance at end of period	$	352	$	564	$	1,122

In the year ended December 31, 2020, restructuring and other initiatives primarily included actions in GMI related to the wind-down of Holden sales, design and engineering operations in Australia and New Zealand, the sale of our vehicle and powertrain manufacturing facilities in Thailand and the execution of a binding term sheet to sell our manufacturing facility in India. We recorded charges of $683 million in the year ended December 31, 2020, primarily consisting of $360 million in dealer restructurings, employee separations and supplier claim charges, which are reflected in the table above, and $323 million in property and intangible asset impairments, inventory provisions, sales allowances and other charges, not reflected in the table above. We also recorded a $236 million charge to Income tax expense due to the establishment of a valuation allowance against deferred tax assets in Australia and New Zealand in the year ended December 31, 2020. We incurred $197 million in net cash outflows resulting from these restructuring actions primarily for dealer restructuring payments and employee separation payments, which includes proceeds of $143 million from the sale of our manufacturing facilities in Thailand, in the year ended December 31, 2020. Holden and Thailand programs were substantially complete at December 31, 2020.

In the year ended December 31, 2019, restructuring and other initiatives primarily included actions related to our announced transformation activities, which include unallocation of products to certain manufacturing facilities and other employee separation programs. We recorded charges of $1.8 billion, primarily in GMNA, in the year ended December 31, 2019 consisting of $1.3 billion primarily in non-cash accelerated depreciation and pension curtailment and other charges, not reflected in the table above, and $535 million primarily in supplier-related charges and employee-related separation charges, which are reflected in the table above. We recorded charges of $1.3 billion, primarily in GMNA, in the year ended December 31, 2018 consisting of $1.0 billion in employee separations and other charges, which are reflected in the table above, and $301 million primarily in non-cash accelerated depreciation, not reflected in the table above. These programs have a total cost since inception of $3.1 billion and were complete at December 31, 2019. We incurred $333 million and $1.1 billion in cash outflows resulting from these restructuring actions, primarily for employee separation payments and supplier-related payments in the years ended December 31, 2020 and 2019. The cash outflows were substantially complete at December 31, 2020.

In the year ended December 31, 2018, restructuring and other initiatives in GMI primarily included the closure of a facility and other restructuring actions in Korea and employee separation programs. We recorded charges of $1.0 billion related to Korea, net of noncontrolling interests. These charges consisted of $537 million in non-cash asset impairments and other charges, not reflected in the table above, and $495 million in employee separation charges, which are reflected in the table above. We incurred $775 million in cash outflows resulting from these Korea restructuring actions, primarily for employee separations and statutory pension payments in the year ended December 31, 2018. These programs were substantially complete at December 31, 2018.

Interest Income and Other Non-Operating Income

12 Months Ended

Dec. 31, 2020

Other Income and Expenses [Abstract]

Interest Income and Other Non-Operating Income


	Years Ended December 31,
	2020		2019		2018
Non-service pension and OPEB income	$	1,095	$	797	$	1,665
Interest income	241		429		335
Licensing agreements income	211		165		296
Revaluation of investments	265		80		258
Other	73		(2)		42
Total interest income and other non-operating income, net	$	1,885	$	1,469	$	2,596

Stockholders' Equity and Noncontrolling Interests

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

Stockholders' Equity and Noncontrolling Interests

Stockholders’ Equity and Noncontrolling Interests

Preferred and Common Stock We have 2.0 billion shares of preferred stock and 5.0 billion shares of common stock authorized for issuance. At December 31, 2020 and 2019 we had no shares of preferred stock and 1.4 billion shares of common stock issued and outstanding.

Common Stock Holders of our common stock are entitled to dividends at the sole discretion of our Board of Directors. Our dividends declared per common share were $0.38, $1.52 and $1.52 and our total dividends paid on common stock were $545 million, $2.2 billion and $2.1 billion for the years ended December 31, 2020, 2019 and 2018. Holders of common stock are entitled to one vote per share on all matters submitted to our stockholders for a vote. The liquidation rights of holders of our common stock are secondary to the payment or provision for payment of all our debts and liabilities and to holders of our preferred stock, if any such shares are then outstanding.

We purchased three million shares of our outstanding common stock for $90 million and $100 million in the years ended December 31, 2020 and 2018. We did not purchase shares of our outstanding common stock in the year ended December 31, 2019. Shares repurchased were part of the common stock repurchase program announced in March 2015, which our Board of Directors increased and extended in January 2016 and January 2017.

Warrants At December 31, 2018 we had 15 million warrants outstanding that we issued in July 2009. The warrants have expired but were exercisable at any time prior to July 10, 2019 at an exercise price of $18.33 per share.

GM Financial Preferred Stock In September 2020, GM Financial issued $500 million of Fixed-Rate Reset Cumulative Perpetual Preferred Stock, Series C, $0.01 par value, with a liquidation preference of $1,000 per share. Dividends will be paid semi-annually when declared starting March 30, 2021 at a fixed rate of 5.70%. The preferred stock is classified as noncontrolling interests in our consolidated financial statements.

In 2018, GM Financial issued $500 million of Fixed-to-Floating Rate Cumulative Perpetual Preferred Stock, Series B, $0.01 par value, with a liquidation preference of $1,000 per share. Dividends are paid semi-annually when declared, which started March 30, 2019 at a fixed rate of 6.50%. The preferred stock is classified as noncontrolling interests in our consolidated financial statements.

Cruise Preferred Shares In 2019, Cruise Holdings issued $1.2 billion of Cruise Class F Preferred Shares, including $687 million to General Motors Holdings LLC. All proceeds related to the Cruise Class F Preferred Shares are designated exclusively for working capital and general corporate purposes of Cruise. The Cruise Class F Preferred Shares participate pari passu with holders of Cruise Holdings common stock in any dividends declared. The Cruise Class F Preferred Shares have the right to vote on the election of one director, who is elected by the vote of a majority of the Cruise Holdings common stock and the Cruise Class F Preferred Shares. Prior to an initial public offering, the holders of Cruise Class F Preferred Shares are restricted from transferring the Cruise Class F Preferred Shares until May 7, 2023. The Cruise Class F Preferred Shares convert into common stock of Cruise Holdings, at specified exchange ratios, upon occurrence of an initial public offering. The Cruise Class F Preferred Shares are entitled to receive the greater of their carrying value or a pro-rata share of any proceeds or distributions upon the occurrence of a merger, sale, liquidation, or dissolution of Cruise Holdings. The Cruise Class F Preferred Shares are classified as noncontrolling interests in our consolidated financial statements.

In 2018, Cruise Holdings issued $900 million of Cruise Preferred Shares to an affiliate of The Vision Fund which subsequently assigned such shares to The Vision Fund. Immediately prior to the issuance of the Cruise Preferred Shares, we invested $1.1 billion in Cruise Holdings. When Cruise's autonomous vehicles are ready for commercial deployment, The Vision Fund is obligated to purchase additional Cruise Preferred Shares for $1.35 billion. All proceeds are designated exclusively for working capital and general corporate purposes of Cruise. Dividends are cumulative and accrue at an annual rate of 7.0% and are payable quarterly in cash or in-kind, at Cruise's discretion. The Cruise Preferred Shares are also entitled to participate in Cruise dividends above a defined threshold. Prior to an initial public offering, The Vision Fund is restricted from transferring the Cruise Preferred Shares until June 28, 2025. The Cruise Preferred Shares are classified as noncontrolling interests in our consolidated financial statements.

Cruise Common Shares In 2018, Cruise Holdings issued $750 million of Class E Common Shares to Honda. All proceeds are designated exclusively for working capital and general corporate purposes of Cruise. At the later of October 3, 2025 or the termination of the commercial agreements between Cruise Holdings and Honda, Cruise Holdings can call all, but not less than all of the Class E Common Shares at an amount equal to the then fair value of Cruise Holdings. The Class E Common Shares are classified as noncontrolling interests in our consolidated financial statements.

GM Korea Preferred Shares In 2018, the Korea Development Bank (KDB) purchased $720 million of GM Korea's Class B Preferred Shares (GM Korea Preferred Shares). Dividends on the GM Korea Preferred Shares are cumulative and accrue at an annual rate of 1.0%. GM Korea can call the preferred shares at their original issue price six years from the date of issuance and once called, the preferred shares can be converted into common shares of GM Korea at the option of the holder. The GM Korea Preferred Shares are classified as noncontrolling interests in our consolidated financial statements. The KDB investment proceeds can only be used for purposes of funding capital expenditures in GM Korea. In conjunction with the GM Korea Preferred Share issuance we agreed to provide GM Korea future funding, if needed, not to exceed $2.8 billion through December 31, 2027, inclusive of $2.0 billion of planned capital expenditures through 2027.

The following table summarizes the significant components of Accumulated other comprehensive loss:


	Years Ended December 31,
	2020		2019		2018
Foreign Currency Translation Adjustments
Balance at beginning of period	$	(2,278)	$	(2,250)	$	(1,606)
Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of tax and impact of adoption of accounting standards(a)(b)	(480)		(56)		(664)
Reclassification adjustment, net of tax(a)	23		28		20
Other comprehensive loss, net of tax(a)	(457)		(28)		(644)
Balance at end of period	$	(2,735)	$	(2,278)	$	(2,250)
Defined Benefit Plans
Balance at beginning of period	$	(8,859)	$	(6,737)	$	(6,398)
Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of impact of adoption of accounting standards(b)	(2,661)		(2,769)		(580)
Tax benefit	444		463		100
Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of tax and impact of adoption of accounting standards(b)	(2,217)		(2,306)		(480)
Reclassification adjustment, net of tax(a)	422		184		141
Other comprehensive loss, net of tax	(1,795)		(2,122)		(339)
Balance at end of period(c)	$	(10,654)	$	(8,859)	$	(6,737)

__________

(a) The income tax effect was insignificant in the years ended December 31, 2020, 2019 and 2018.

(b) The noncontrolling interests are insignificant in the years ended December 31, 2020, 2019 and 2018.

Earnings Per Share

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Earnings Per Share

Basic and diluted earnings (loss) per share are computed by dividing Net income attributable to common stockholders by the weighted-average common shares outstanding in the period. Diluted earnings (loss) per share is computed by giving effect to all potentially dilutive securities that are outstanding.


	Years Ended December 31,
	2020		2019		2018
Basic earnings per share
Income from continuing operations	$	6,427	$	6,732	$	8,084
Less: cumulative dividends on subsidiary preferred stock	(180)		(151)		(98)
Income from continuing operations attributable to common stockholders	6,247		6,581		7,986
Loss from discontinued operations, net of tax	—		—		70
Net income attributable to common stockholders	$	6,247	$	6,581	$	7,916

Weighted-average common shares outstanding	1,433		1,424		1,411

Basic earnings per common share – continuing operations	$	4.36	$	4.62	$	5.66
Basic loss per common share – discontinued operations	$	—	$	—	$	0.05
Basic earnings per common share	$	4.36	$	4.62	$	5.61
Diluted earnings per share
Income from continuing operations attributable to common stockholders – diluted	$	6,247	$	6,581	$	7,986
Loss from discontinued operations, net of tax – diluted	$	—	$	—	$	70
Net income attributable to common stockholders – diluted	$	6,247	$	6,581	$	7,916

Weighted-average common shares outstanding – basic	1,433		1,424		1,411
Dilutive effect of warrants and awards under stock incentive plans	9		15		20
Weighted-average common shares outstanding – diluted	1,442		1,439		1,431

Diluted earnings per common share – continuing operations	$	4.33	$	4.57	$	5.58
Diluted loss per common share – discontinued operations	$	—	$	—	$	0.05
Diluted earnings per common share	$	4.33	$	4.57	$	5.53

Potentially dilutive securities(a)	7		7		9

__________

(a) Potentially dilutive securities attributable to outstanding stock options and RSUs were excluded from the computation of diluted EPS because the securities would have had an antidilutive effect.

Discontinued Operations

12 Months Ended

Dec. 31, 2020

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

In 2017, we sold the Opel/Vauxhall Business to PSA Group. We also sold the Fincos to Banque PSA Finance S.A. and BNP Paribas Personal Finance S.A.

Our wholly owned subsidiary (The Seller) agreed to indemnify PSA Group for certain losses resulting from any inaccuracy of the representations and warranties or breaches of our covenants included in the Agreement and for certain other liabilities, including certain emissions and product liabilities. We entered into a guarantee for the benefit of PSA Group and pursuant to which we agreed to guarantee the Seller's obligation to indemnify PSA Group. Certain of these indemnification obligations are subject to time limitations, thresholds and/or caps as to the amount of required payments.

Although the sale reduced our new vehicle presence in Europe, we may still be impacted by actions taken by regulators related to vehicles sold before the sale. In Germany, the Kraftfahrt-Bundesamt (KBA) issued an order in November 2019, which converted a voluntary recall initiated by Opel in 2017 and 2018 into a mandatory recall for allegedly failing to comply with certain emissions regulations. However, because the overwhelming majority of vehicles have already received KBA-approved software calibration updates pursuant to the voluntary recall, the number of vehicles subject to the mandatory recall is insignificant. The Seller may also be obligated to indemnify PSA Group or otherwise absorb costs and expenses resulting from

the foregoing as well as certain related potential litigation costs, settlements, judgments and potential fines. In addition, at the KBA's request, the German authorities re-opened a separate criminal investigation related to this matter that had previously been closed with no action. At December 31, 2020, we have accrued an insignificant amount relating to these matters.

The results of the European Business operations recorded in Loss from discontinued operations, net were $70 million in the year ended December 31, 2018. There was no income or loss from discontinued operations in the years ended December 31, 2020 and 2019.

We continue to purchase from and supply to PSA Group certain vehicles, parts and engineering services for a period of time following the sale. The following table summarizes transactions with the Opel/Vauxhall Business:


	Years Ended December 31,
	2020		2019		2018
Net sales and revenue(a)	$	144	$	1,129	$	1,939
Purchases and expenses(a)	$	392	$	825	$	1,422
Cash payments(b)	$	630	$	975	$	1,849
Cash receipts(b)	$	252	$	1,408	$	2,310

__________

(a) Included in Income from continuing operations.

(b) Included in Net cash provided by operating activities.

Stock Incentive Plans

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Stock Incentive Plans

GM Stock Incentive Awards We grant to certain employees RSUs, RSAs, PSUs and stock options (collectively, stock incentive awards) under our 2016 Equity Incentive Plan and 2020 Long-Term Incentive Plan (LTIP) and prior to the 2020 LTIP, under our 2017 and 2014 LTIP. The 2020 LTIP was approved by stockholders in June 2020. Any new awards granted after the approval of the 2020 LTIP in June 2020 will be issued under the 2020 LTIP. To the extent any shares remain available for issuance under the 2017 LTIP, the 2016 Equity Incentive Plan, and/or the 2014 LTIP, such shares will only be used to settle outstanding awards that were previously granted under such plans prior to June 2020. Shares awarded under the plans are subject to forfeiture if the participant leaves the company for reasons other than those permitted under the plans such as retirement, death or disability.

RSU awards granted either cliff vest or ratably vest generally over a three-year service period, as defined in the terms of each award. PSU awards vest at the end of a three-year performance period, based on performance criteria determined by the Executive Compensation Committee of the Board of Directors at the time of award. The number of shares earned may equal, exceed or be less than the targeted number of shares depending on whether the performance criteria are met, surpassed or not met. Stock options expire 10 years from the grant date. Our performance-based stock options vest ratably over 55 months based on the performance of our common stock relative to that of a specified peer group. Our service-based stock options vest ratably over 19 months to three years.

In connection with our acquisition of Cruise Automation, Inc. in May 2016, RSAs and PSUs in common shares of GM were granted to employees of Cruise Holdings. The RSAs vest ratably, generally over a three-year service period. The PSUs are contingent upon achievement of specific technology and commercialization milestones.


	Shares (in millions)	Weighted-Average Grant Date Fair Value		Weighted-Average Remaining Contractual Term in Years
Units outstanding at January 1, 2020	41.5	$	19.17	0.9
Granted	13.3	$	22.50
Settled	(13.5)	$	19.31
Forfeited or expired	(2.7)	$	27.23
Units outstanding at December 31, 2020(a)	38.6	$	19.84	0.9

__________

(a) Includes the target amount of PSUs.

Our weighted-average assumptions used to value our stock options are a dividend yield of 4.25%, 3.90% and 3.69%, expected volatility of 26.2%, 28.0% and 28.0%, a risk-free interest rate of 1.44%, 2.62% and 2.73%, and an expected option life of 5.97, 6.00 and 5.98 years for options issued during the years ended December 31, 2020, 2019 and 2018. The expected volatility is based on the average of the implied volatility of publicly traded options for our common stock.

Total compensation expense related to the above awards was $351 million, $456 million and $316 million in the years ended December 31, 2020, 2019 and 2018.

At December 31, 2020, the total unrecognized compensation expense for nonvested equity awards granted was $213 million. This expense is expected to be recorded over a weighted-average period of 1.3 years. The total fair value of stock incentive awards vested was $275 million, $287 million and $317 million in the years ended December 31, 2020, 2019 and 2018.

Cruise Stock Incentive Awards In addition to the awards noted above, RSUs were granted to Cruise employees in common shares of Cruise Holdings in the years ended December 31, 2020, 2019 and 2018. Stock options were granted in common shares of Cruise Holdings in the years ended December 31, 2019 and 2018. There were no Cruise stock options granted in the year ended December 31, 2020. These awards were granted under the 2018 Employee Incentive Plan approved by Cruise Holdings' Board of Directors in August 2018. Shares awarded under the plan are subject to forfeiture if the participant leaves the company for reasons other than those permitted under the plan. Stock options vest ratably over four to 10 years, as defined in the terms of each award. Stock options expire 10 years from the grant date. RSU awards granted vest upon the satisfaction of both a service condition and a liquidity condition. The service condition for the majority of these awards is satisfied over four years. The liquidity condition is satisfied upon the earlier of the date of a change in control transaction or the consummation of an initial public offering.

Total compensation expense related to Cruise Holdings’ share-based awards was insignificant for the years ended December 31, 2020, 2019 and 2018. No share-based compensation expense had been recognized for the RSUs because the liquidity condition described above was not met at December 31, 2020, 2019 and 2018. Total unrecognized compensation expense for Cruise Holdings’ nonvested equity awards granted was $863 million at December 31, 2020, which was primarily comprised of the RSUs for which the liquidity condition had not been met. Total units outstanding were 79.3 million at December 31, 2020. The expense related to stock options is expected to be recorded over a weighted-average period of 7.1 years. The timing of the expense related to RSUs will depend upon the date of the satisfaction of the liquidity condition.

Segment Reporting

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Segment Reporting

Segment Reporting We analyze the results of our business through the following reportable segments: GMNA, GMI, Cruise and GM Financial. The European Business is presented as discontinued operations and is excluded from our segment results for all periods presented. The European Business was previously reported as our GM Europe segment and part of GM Financial. The chief operating decision-maker evaluates the operating results and performance of our automotive segments and Cruise through EBIT-adjusted, which is presented net of noncontrolling interests. The chief operating decision-maker evaluates GM Financial through EBT-adjusted because interest income and interest expense are part of operating results when assessing and measuring the operational and financial performance of the segment. Each segment has a manager responsible for executing our strategic initiatives. While not all vehicles within a segment are individually profitable on a fully allocated cost basis, those vehicles attract customers to dealer showrooms and help maintain sales volumes for other, more profitable vehicles and contribute towards meeting required fuel efficiency standards. As a result of these and other factors, we do not manage our business on an individual brand or vehicle basis.

Substantially all of the trucks, crossovers, cars and automobile parts produced are marketed through retail dealers in North America and through distributors and dealers outside of North America, the substantial majority of which are independently owned. In addition to the products sold to dealers for consumer retail sales, trucks, crossovers and cars are also sold to fleet customers, including daily rental car companies, commercial fleet customers, leasing companies and governments. Fleet sales are completed through the dealer network and in some cases directly with fleet customers. Retail and fleet customers can obtain a wide range of after-sale vehicle services and products through the dealer network, such as maintenance, light repairs, collision repairs, vehicle accessories and extended service warranties.

GMNA meets the demands of customers in North America with vehicles developed, manufactured and/or marketed under the Buick, Cadillac, Chevrolet and GMC brands. GMI primarily meets the demands of customers outside North America with vehicles developed, manufactured and/or marketed under the Buick, Cadillac, Chevrolet, GMC, and Holden brands. We also have equity ownership stakes in entities that meet the demands of customers in other countries, primarily China, with vehicles developed, manufactured and/or marketed under the Baojun, Buick, Cadillac, Chevrolet and Wuling brands. Cruise is our global segment responsible for the development and commercialization of autonomous vehicle technology, and includes autonomous vehicle-related engineering and other costs.

Our automotive interest income and interest expense, legacy costs from the Opel/Vauxhall Business (primarily pension costs), corporate expenditures and certain nonsegment specific revenues and expenses are recorded centrally in Corporate. Corporate assets primarily consist of cash and cash equivalents, marketable debt securities, PSA warrants and intercompany balances. Retained net underfunded pension liabilities related to the European Business are also recorded in Corporate. All intersegment balances and transactions have been eliminated in consolidation.

The following tables summarize key financial information by segment:


	At and For the Year Ended December 31, 2020
	GMNA		GMI		Corporate		Eliminations		Total Automotive		Cruise		GM Financial		Eliminations/Reclassifications		Total
Net sales and revenue	$	96,733	$	11,586	$	350			$	108,669	$	103	$	13,831	$	(118)	$	122,485
Earnings (loss) before interest and taxes-adjusted	$	9,071	$	(528)	$	(634)			$	7,909	$	(887)	$	2,702	$	(14)	$	9,710
Adjustments(a)	$	(99)	$	(683)	$	130			$	(652)	$	—	$	—	$	—	(652)
Automotive interest income																	241
Automotive interest expense																	(1,098)
Net (loss) attributable to noncontrolling interests																	(106)
Income before income taxes																	8,095
Income tax expense																	(1,774)
Income from continuing operations																	6,321
Loss from discontinued operations, net of tax																	—
Net loss attributable to noncontrolling interests																	106
Net income attributable to stockholders																	$	6,427
Equity in net assets of nonconsolidated affiliates	$	242	$	6,583	$	—	$	—	$	6,825	$	—	$	1,581	$	—	$	8,406
Goodwill and intangibles	$	2,346	$	806	$	—	$	—	$	3,152	$	735	$	1,343	$	—	$	5,230
Total assets	$	114,137	$	23,019	$	39,933	$	(57,464)	$	119,625	$	3,625	$	113,410	$	(1,466)	$	235,194
Expenditures for property	$	4,501	$	729	$	21	$	—	$	5,251	$	15	$	34	$	—	$	5,300
Depreciation and amortization	$	4,739	$	624	$	25	$	—	$	5,388	$	43	$	7,245	$	—	$	12,676
Impairment charges	$	20	$	99	$	—	$	—	$	119	$	20	$	—	$	—	$	139
Equity income	$	17	$	510	$	—	$	—	$	527	$	—	$	147	$	—	$	674

__________

(a) Consists of restructuring charges related to Cadillac dealer strategy in GMNA; restructuring and other charges primarily in Australia, New Zealand, Thailand and India in GMI; and ignition switch-related legal matters in Corporate.


	At and For the Year Ended December 31, 2019
	GMNA		GMI		Corporate		Eliminations		Total Automotive		Cruise		GM Financial		Eliminations/Reclassifications		Total
Net sales and revenue	$	106,366	$	16,111	$	220			$	122,697	$	100	$	14,554	$	(114)	$	137,237
Earnings (loss) before interest and taxes-adjusted	$	8,204	$	(202)	$	(691)			$	7,311	$	(1,004)	$	2,104	$	(18)	$	8,393
Adjustments(a)	$	(1,618)	$	1,081	$	(2)			$	(539)	$	—	$	—	$	—	(539)
Automotive interest income																	429
Automotive interest expense																	(782)
Net (loss) attributable to noncontrolling interests																	(65)
Income before income taxes																	7,436
Income tax expense																	(769)
Income from continuing operations																	6,667
Loss from discontinued operations, net of tax																	—
Net loss attributable to noncontrolling interests																	65
Net income attributable to stockholders																	$	6,732
Equity in net assets of nonconsolidated affiliates	$	84	$	7,023	$	—	$	—	$	7,107	$	—	$	1,455	$	—	$	8,562
Goodwill and intangibles	$	2,459	$	888	$	1	$	—	$	3,348	$	634	$	1,355	$	—	$	5,337
Total assets	$	109,290	$	24,969	$	32,365	$	(50,244)	$	116,380	$	4,230	$	108,881	$	(1,454)	$	228,037
Expenditures for property	$	6,305	$	1,096	$	84	$	—	$	7,485	$	60	$	47	$	—	$	7,592
Depreciation and amortization	$	6,112	$	533	$	46	$	(2)	$	6,689	$	21	$	7,350	$	—	$	14,060
Impairment charges	$	15	$	7	$	—	$	—	$	22	$	36	$	—	$	—	$	58
Equity income (loss)	$	8	$	1,123	$	(29)	$	—	$	1,102	$	—	$	166	$	—	$	1,268

__________

(a) Consists of restructuring and other charges related to transformation activities of $1.6 billion in GMNA and $115 million in GMI; a benefit of $1.4 billion related to the retrospective recoveries of indirect taxes in Brazil; partially offset by losses of $164 million related to the FAW-GM divestiture in GMI.


	At and For the Year Ended December 31, 2018
	GMNA		GMI		Corporate		Eliminations		Total Automotive		Cruise		GM Financial		Eliminations		Total
Net sales and revenue	$	113,792	$	19,148	$	203			$	133,143	$	—	$	14,016	$	(110)	$	147,049
Earnings (loss) before interest and taxes-adjusted	$	10,769	$	423	$	(570)			$	10,622	$	(728)	$	1,893	$	(4)	$	11,783
Adjustments(a)	$	(1,236)	$	(1,212)	$	(457)			$	(2,905)	$	—	$	—	$	—	(2,905)
Automotive interest income																	335
Automotive interest expense																	(655)
Net (loss) attributable to noncontrolling interests																	(9)
Income before income taxes																	8,549
Income tax expense																	(474)
Income from continuing operations																	8,075
Loss from discontinued operations, net of tax																	(70)
Net loss attributable to noncontrolling interests																	9
Net loss attributable to stockholders																	$	8,014
Equity in net assets of nonconsolidated affiliates	$	75	$	7,761	$	24	$	—	$	7,860	$	—	$	1,355	$	—	$	9,215
Goodwill and intangibles	$	2,623	$	928	$	1	$	—	$	3,552	$	671	$	1,356	$	—	$	5,579
Total assets	$	109,763	$	24,911	$	31,694	$	(50,690)	$	115,678	$	3,195	$	109,953	$	(1,487)	$	227,339
Expenditures for property	$	7,784	$	883	$	21	$	(2)	$	8,686	$	15	$	60	$	—	$	8,761
Depreciation and amortization	$	4,995	$	562	$	50	$	(3)	$	5,604	$	7	$	7,531	$	—	$	13,142
Impairment charges	$	55	$	466	$	6	$	—	$	527	$	—	$	—	$	—	$	527
Equity income	$	8	$	1,972	$	—	$	—	$	1,980	$	—	$	183	$	—	$	2,163

__________

(a) Consists of restructuring and other charges related to transformation activities of $1.2 billion in GMNA; charges of $1.2 billion related to restructuring actions in Korea and other countries in GMI; and of $440 million for ignition switch-related legal matters and other insignificant charges in Corporate.

Automotive revenue is attributed to geographic areas based on the country of sale. GM Financial revenue is attributed to the geographic area where the financing is originated. The following table summarizes information concerning principal geographic areas:


	At and For the Years Ended December 31,
	2020				2019				2018
	Net Sales and Revenue		Long-Lived Assets		Net Sales and Revenue		Long-Lived Assets		Net Sales and Revenue		Long-Lived Assets
Automotive
U.S.	$	89,204	$	24,932	$	97,887	$	25,401	$	104,413	$	25,625
Non-U.S.	19,469		12,516		24,810		13,190		28,632		13,263
GM Financial
U.S.	12,227		36,773		12,727		39,509		12,169		41,334
Non-U.S.	1,585		3,230		1,813		2,772		1,835		2,476
Total consolidated	$	122,485	$	77,451	$	137,237	$	80,872	$	147,049	$	82,698

No individual country other than the U.S. represented more than 10% of our total net sales and revenue or long-lived assets.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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+ Details

Supplemental Information for the Consolidated Statements of Cash Flows

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Information [Abstract]

Supplemental Information for the Consolidated Statements of Cash Flows

The following table summarizes the sources (uses) of cash provided by Change in other operating assets and liabilities and Cash paid for income taxes and interest:


Change in other operating assets and liabilities	Years Ended December 31,
	2020		2019		2018
Accounts receivable	$	(1,341)	$	(563)	$	492
Wholesale receivables funded by GM Financial, net	2,744		663		(2,606)
Inventories	(104)		(761)		399
Automotive equipment on operating leases	53		274		748
Change in other assets	68		(1,550)		(529)
Accounts payable	42		(492)		(537)
Income taxes payable	130		213		(75)
Accrued and other liabilities	(1,991)		(1,573)		732
Total	$	(399)	$	(3,789)	$	(1,376)

Cash paid for income taxes and interest
Cash paid for income taxes, net	$	719	$	689	$	660
Cash paid for interest (net of amounts capitalized) – Automotive	$	1,011	$	739	$	656
Cash paid for interest (net of amounts capitalized) – GM Financial	2,947		3,475		2,941
Total cash paid for interest (net of amounts capitalized)	$	3,958	$	4,214	$	3,597

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventIn January 2021, Cruise Holdings issued Class G Preferred Shares in exchange for $2.2 billion from Microsoft and other investors, including $1.0 billion from General Motors Holdings LLC. As a result, Cruise Holdings has fallen below the ownership threshold required for inclusion in our U.S. consolidated income tax returns. In the three months ended March 31, 2021, we will establish a valuation allowance of approximately $350 million against deferred tax assets that may not be realizable. In addition, we, Cruise Holdings and Microsoft entered into a long-term strategic relationship to accelerate the commercialization of self-driving vehicles with Microsoft being the preferred cloud provider.

Significant Accounting Policies (Policies)	12 Months Ended
Significant Accounting Policies (Policies)	Dec. 31, 2020
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation We consolidate entities that we control due to ownership of a majority voting interest and we consolidate variable interest entities (VIEs) when we are the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation. Our share of earnings or losses of nonconsolidated affiliates is included in our consolidated operating results using the equity method of accounting when we are able to exercise significant influence over the operating and financial decisions of the affiliate.
Use of Estimates in the Preparation of the Financial Statements	Use of Estimates in the Preparation of the Financial Statements Accounting estimates are an integral part of the consolidated financial statements. These estimates require the use of judgments and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses in the periods presented. We believe that the accounting estimates employed are appropriate and the resulting balances are reasonable; however, due to the inherent uncertainties in making estimates, actual results could differ from the original estimates, requiring adjustments to these balances in future periods.
GM Financial	GM Financial The amounts presented for GM Financial have been adjusted to include the effect of our tax attributes on GM Financial's deferred tax positions and provision for income taxes, which are not applicable to GM Financial on a stand-alone basis, and to eliminate the effect of transactions between GM Financial and the other members of the consolidated group. Accordingly, the amounts presented will differ from those presented by GM Financial on a stand-alone basis.
Revenue Recognition	Revenue Recognition Automotive Automotive net sales and revenue represents the amount of consideration to which we expect to be entitled in exchange for vehicle, parts and accessories and services and other sales. The consideration recognized represents the amount received, typically shortly after the sale to a customer, net of estimated dealer and customer sales incentives we reasonably expect to pay. Significant factors in determining our estimates of incentives include forecasted sales volume, product mix and the rate of customer acceptance of incentive programs, all of which are estimated based on historical experience and assumptions concerning future customer behavior and market conditions. Subsequent adjustments to incentive estimates are possible as facts and circumstances change over time. A portion of the consideration received is deferred for separate performance obligations, such as maintenance and vehicle connectivity, that will be provided to our customers at a future date. Taxes assessed by various government entities, such as sales, use and value-added taxes, collected at the time of the vehicle sale are excluded from Automotive net sales and revenue. Costs for shipping and handling activities that occur after control of the vehicle transfers to the dealer are recognized at the time of sale and presented in Automotive and other cost of sales. Vehicle, Parts and Accessories For the majority of vehicle and accessories sales, our customers obtain control and we recognize revenue when the vehicle transfers to the dealer, which generally occurs when the vehicle is released to the carrier responsible for transporting it to a dealer. Revenue, net of estimated returns, is recognized on the sale of parts upon delivery to the customer. When our customers have a right to return eligible parts and accessories, we consider the returns in our estimation of the transaction price. Transfers to daily rental companies are accounted for as sales, with revenue recognized at the time of transfer. We defer revenue for remarketing obligations, record a residual value guarantee and reflect a liability for amounts expected to be paid once the remarketing services are complete at the time of certain transfers and recognize deferred revenue in earnings upon completion of the remarketing service. Transfers containing a substantive repurchase obligation are accounted for as operating leases and rental income is recognized over the estimated term of the lease. Our total exposure to vehicle repurchase obligations is reduced to the extent vehicles are able to be resold to a third party. Used Vehicles Proceeds from the auction of vehicles returned from daily rental car companies and vehicles utilized by our employees are recognized in Automotive net sales and revenue upon transfer of control of the vehicle to the customer and the related vehicle carrying value is recognized in Automotive and other cost of sales. Services and Other Services and other revenue primarily consists of revenue from vehicle-related service arrangements and after-sale services such as maintenance, OnStar, vehicle connectivity and extended service warranties. For those service arrangements that are bundled with a vehicle sale, a portion of the revenue from the sale is allocated to the service component and recognized as deferred revenue within Accrued liabilities or Other liabilities. We recognize revenue for bundled services and services sold separately as services are performed, typically over a period of up to seven years. Automotive Financing - GM Financial Finance charge income earned on finance receivables is recognized using the effective interest method. Fees and commissions received (including incentive payments) and direct costs of originating loans are deferred and amortized over the term of the related finance receivables using the effective interest method and are removed from the consolidated balance sheets when the related finance receivables are fully charged off or paid in full. Accrual of finance charge income on retail finance receivables is generally suspended on accounts that are more than 60 days delinquent, accounts in bankruptcy and accounts in repossession. Payments received on nonaccrual loans are first applied to any fees due, then to any interest due and then any remaining amounts are applied to principal. Interest accrual generally resumes once an account has received payments bringing the delinquency to less than 60 days past due. Accrual of finance charge income on commercial finance receivables is generally suspended on accounts that are more than 90 days delinquent, upon receipt of a bankruptcy notice from a borrower, or where reasonable doubt exists about the full collectability of contractually agreed upon principal and interest. Payments received on nonaccrual loans are first applied to principal. Interest accrual resumes once an account has received payments bringing the account fully current and collection of contractual principal and interest is reasonably assured (including amounts previously charged off). Income from operating lease assets, which includes lease origination fees, net of lease origination costs, is recorded as operating lease revenue on a straight-line basis over the term of the lease agreement. Gains or losses realized upon disposition of off-lease assets including any payments received from lessees upon lease termination, are included in GM Financial interest, operating and other.
Advertising and Promotion Expenditures	Advertising and Promotion Expenditures Advertising and promotion expenditures, which are expensed as incurred in Automotive and other selling, general and administrative expense, were $2.7 billion, $3.7 billion and $4.0 billion in the years ended December 31, 2020, 2019 and 2018.
Research and Development Expenditures	Research and Development Expenditures Research and development expenditures, which are expensed as incurred in Automotive and other cost of sales, were $6.2 billion, $6.8 billion and $7.8 billion in the years ended December 31, 2020, 2019 and 2018. We enter into cost sharing arrangements with third parties or nonconsolidated affiliates for product-related research, engineering, design and development activities. Cost sharing payments and fees related to these arrangements are presented in Automotive and other cost of sales.
Cash Equivalents and Restricted Cash	Cash Equivalents and Restricted Cash Cash equivalents are defined as short-term, highly-liquid investments with original maturities of 90 days or less. Certain operating agreements require us to post cash as collateral. Cash and cash equivalents subject to contractual restrictions and not readily available are classified as restricted cash. Restricted cash is invested in accordance with the terms of the underlying agreements and include amounts related to various deposits, escrows and other cash collateral. Restricted cash is included in Other current assets and Other assets in the consolidated balance sheets.
Fair Value Measurements	Fair Value Measurements A three-level valuation hierarchy, based upon observable and unobservable inputs, is used for fair value measurements. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect market assumptions based on the best evidence available. These two types of inputs create the following fair value hierarchy: Level 1 – Quoted prices for identical instruments in active markets; Level 2 – Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations whose significant inputs are observable; and Level 3 – Instruments whose significant inputs are unobservable.
Marketable Debt Securities	Marketable Debt Securities We generally classify marketable debt securities as available-for-sale. Various factors, including turnover of holdings and investment guidelines, are considered in determining the classification of securities. Available-for-sale debt securities are recorded at fair value with non-credit related unrealized gains and losses recorded in Accumulated other comprehensive loss until realized. Non-credit related unrealized losses are reclassified to Interest income and other non-operating income, net if we intend to sell the security or it is more likely than not that we will be required to sell the security before the recovery of the unrealized loss. Credit losses are recorded in Interest income and other non-operating income, net. An evaluation is made quarterly to determine if any portion of unrealized losses recorded in Accumulated other comprehensive loss needs to be reclassified. We determine realized gains and losses for all debt securities using the specific identification method and measure the fair value of our marketable debt securities using a market approach where identical or comparable prices are available and an income approach in other cases. If quoted market prices are not available, fair values of securities are determined using prices from a pricing service, pricing models, quoted prices of securities with similar characteristics or discounted cash flow models. These prices represent non-binding quotes. Our pricing service utilizes industry-standard pricing models that consider various inputs. We conduct an annual review of our pricing service and believe the prices received from our pricing service are a reliable representation of exit prices.
Accounts and Notes Receivable	Accounts and Notes Receivable Accounts and notes receivable primarily consists of amounts that are due and payable from our customers for the sale of vehicles, parts, and accessories. We evaluate the collectability of receivables each reporting period and record an allowance for doubtful accounts to present the net amount expected to be collected on our receivables. Additions to the allowance are charged to bad debt expense reported in Automotive and other selling, general and administrative expense and were insignificant in the years ended December 31, 2020, 2019 and 2018.
GM Financial Receivables	GM Financial Receivables Finance receivables are carried at amortized cost, net of allowance for loan losses. Provisions for loan losses are charged to operations in amounts sufficient to maintain the allowance for loan losses at levels considered adequate to cover expected credit losses on the finance receivables. For retail finance receivables, GM Financial uses static pool modeling techniques to determine the allowance for loan losses expected over the remaining life of the receivables, which is supplemented by management judgment. The modeling techniques incorporate reasonable and supportable forecasts of economic conditions over the expected remaining life of the finance receivables. The economic forecasts incorporate factors which vary by region that GM Financial believes will have the largest impact on expected losses, including unemployment rates, interest rate spreads, disposable personal income and growth rates in gross domestic product. Troubled debt restructurings (TDRs) are grouped separately for purposes of measuring the allowance. The allowance for TDRs uses static pool modeling techniques like non-TDR retail finance receivables to determine the expected loss amount. The expected cash flows of the receivables are then discounted at the original weighted average effective interest rate of the pool. Factors considered when estimating the allowance for TDRs are based on an evaluation of historical and current information, which may be supplemented by management judgment. Finance charge income from loans classified as TDRs is accounted for in the same manner as other accruing loans. Cash collections on these loans are allocated according to the same payment hierarchy methodology applied to loans that are not classified as TDRs. Commercial finance receivables are carried at amortized cost, net of allowance for loan losses and amounts held under a cash management program. GM Financial establishes the allowance for loan losses based on historical loss experience, as well as the forecast for industry vehicle sales, which is the economic indicator believed to have the largest impact on expected losses.
Inventories	Inventories Inventories are stated at the lower of cost or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business less cost to sell, and considers general market and economic conditions, periodic reviews of current profitability of vehicles, product warranty costs and the effect of estimated sales incentives. Net realizable value for off-lease and other vehicles is current auction sales proceeds less disposal and warranty costs. Productive material, supplies, work in process and service parts are reviewed to determine if inventory quantities are in excess of forecasted usage or if they have become obsolete.
Equipment on Operating Leases	Equipment on Operating Leases Equipment on operating leases, net consists of vehicle leases to retail customers with lease terms of two to five years and vehicle sales to rental car companies that are expected to be repurchased in an average of seven months. We are exposed to changes in the residual values of these assets. The residual values represent estimates of the values of the leased vehicles at the end of the lease agreements and are determined based on forecasted auction proceeds when there is a reliable basis to make such a determination. Realization of the residual values is dependent on the future ability to market the vehicles under prevailing market conditions. The estimate of the residual value is evaluated over the life of the arrangement and adjustments may be made to the extent the expected value of the vehicle changes. Adjustments may be in the form of revisions to the depreciation rate or recognition of an impairment charge. A lease vehicle asset group is determined to be impaired if an impairment indicator exists and the expected future cash flows, which include estimated residual values, are lower than the carrying amount of the vehicle asset group. If the carrying amount is considered impaired an impairment charge is recorded for the amount by which the carrying amount exceeds fair value of the vehicle asset group. Fair value is determined primarily using the anticipated cash flows, including estimated residual values. In our automotive operations when a vehicle that is accounted for as a lease is returned the asset is reclassified from Equipment on operating leases, net to Inventories at the lower of cost or net realizable value. Upon disposition, proceeds are recorded in Automotive net sales and revenue and costs are recorded in Automotive and other cost of sales. In our automotive finance operations when a leased vehicle is returned or repossessed the asset is recorded in Other assets at the lower of amortized cost or net realizable value. Upon disposition a gain or loss is recorded in GM Financial interest, operating and other expenses for any difference between the net book value of the leased asset and the proceeds from the disposition of the asset.
Equity Investments	Equity Investments When events and circumstances warrant, equity investments accounted for under the equity method of accounting are evaluated for impairment. An impairment charge is recorded whenever a decline in value of an equity investment below its carrying amount is determined to be other-than-temporary. Impairment charges related to equity method investments are recorded in Equity income. Equity investments that are not accounted for under the equity method of accounting are measured at fair value with changes in fair value recorded in Interest income and other non-operating income, net.
Property, net and Special Tools	Property, net Property, plant and equipment, including internal use software, is recorded at cost. Major improvements that extend the useful life or add functionality are capitalized. The gross amount of assets under finance leases is included in property, plant and equipment. Expenditures for repairs and maintenance are charged to expense as incurred. We depreciate depreciable property using the straight-line method. Leasehold improvements are amortized over the period of lease or the life of the asset, whichever is shorter. The amortization of the assets under finance leases is included in depreciation expense. Upon retirement or disposition of property, plant and equipment, the cost and related accumulated depreciation are eliminated and any resulting gain or loss is recorded in earnings. Impairment charges related to property are recorded in Automotive and other cost of sales, Automotive and other selling, general and administrative expense or GM Financial interest, operating and other expenses. Special Tools Special tools represent product-specific propulsion and non-propulsion related tools, dies, molds and other items used in the vehicle manufacturing process. Expenditures for special tools are recorded at cost and are capitalized. We amortize special tools over their estimated useful lives using the straight-line method or an accelerated amortization method based on their historical and estimated production volume. Impairment charges related to special tools are recorded in Automotive and other cost of sales.
Goodwill	Goodwill Goodwill is not amortized but rather tested for impairment annually on October 1 and when events warrant such a review. The impairment test entails an assessment of qualitative factors to determine whether it is more likely than not that an impairment exists. If it is more likely than not that an impairment exists, then a quantitative impairment test is performed. Impairment exists when the carrying amount of a reporting unit exceeds its fair value.
Intangible Assets, net	Intangible Assets, net Intangible assets, excluding goodwill, primarily include brand names, technology and intellectual property, customer relationships and dealer networks. Intangible assets are amortized on a straight-line or an accelerated method of amortization over their estimated useful lives. An accelerated amortization method reflecting the pattern in which the asset will be consumed is utilized if that pattern can be reliably determined. We consider the period of expected cash flows and underlying data used to measure the fair value of the intangible assets when selecting a useful life. Amortization of developed technology and intellectual property is recorded in Automotive and other cost of sales. Amortization of brand names, customer relationships and our dealer networks is recorded in Automotive and other selling, general and administrative expense or GM Financial interest, operating and other expenses. Impairment charges, if any, related to intangible assets are recorded in Automotive and other selling, general and administrative expense or Automotive and other cost of sales.
Valuation of Long-Lived Assets	Valuation of Long-Lived Assets The carrying amount of long-lived assets and finite-lived intangible assets to be held and used in the business is evaluated for impairment when events and circumstances warrant. If the carrying amount of a long-lived asset group is considered impaired, a loss is recorded based on the amount by which the carrying amount exceeds fair value. Product-specific long-lived asset groups and non-product specific long-lived assets are separately tested for impairment on an asset group basis. Fair value is determined using either the market or sales comparison approach, cost approach or anticipated cash flows discounted at a rate commensurate with the risk involved. Long-lived assets to be disposed of other than by sale are considered held for use until disposition.
Pension and OPEB Plans	Pension and OPEB Plans Attribution, Methods and Assumptions The cost of benefits provided by defined benefit pension plans is recorded in the period employees provide service. The cost of pension plan amendments that provide for benefits already earned by plan participants is amortized over the expected period of benefit which may be the duration of the applicable collective bargaining agreement specific to the plan, the expected future working lifetime or the life expectancy of the plan participants. The cost of medical, dental, legal service and life insurance benefits provided through postretirement benefit plans is recorded in the period employees provide service. The cost of postretirement plan amendments that provide for benefits already earned by plan participants is amortized over the expected period of benefit which may be the average period to full eligibility or the average life expectancy of the plan participants. An expected return on plan asset methodology is utilized to calculate future pension expense for certain significant funded benefit plans. A market-related value of plan assets methodology is also utilized that averages gains and losses on the plan assets over a period of years to determine future pension expense. The methodology recognizes 60% of the difference between the fair value of assets and the expected calculated value in the first year and 10% of that difference over each of the next four years. The discount rate assumption is established for each of the retirement-related benefit plans at their respective measurement dates. In the U.S. we use a cash flow matching approach that uses projected cash flows matched to spot rates along a high-quality corporate bond yield curve to determine the present value of cash flows to calculate a single equivalent discount rate. We apply individual annual yield curve rates to determine the service cost and interest cost for our pension and OPEB plans to more specifically link the cash flows related to service cost and interest cost to bonds maturing in their year of payment. The benefit obligation for pension plans in Canada, the U.K. and Germany represents 93% of the non-U.S. pension benefit obligation at December 31, 2020. The discount rates for plans in Canada, the U.K. and Germany are determined using a cash flow matching approach like the U.S. Plan Asset Valuation Due to the lack of timely available market information for certain investments in the asset classes described below as well as the inherent uncertainty of valuation, reported fair values may differ from fair values that would have been used had timely available market information been available. Common and Preferred Stock Common and preferred stock for which market prices are readily available at the measurement date are valued at the last reported sale price or official closing price on the primary market or exchange on which they are actively traded and are classified in Level 1. Such equity securities for which the market is not considered to be active are valued via the use of observable inputs, which may include the use of adjusted market prices last available, bids or last available sales prices and/or other observable inputs and are classified in Level 2. Common and preferred stock classified in Level 3 are privately issued securities or other issues that are valued via the use of valuation models using significant unobservable inputs that generally consider aged (stale) pricing, earnings multiples, discounted cash flows and/or other qualitative and quantitative factors. Debt Securities Valuations for debt securities are based on quotations received from independent pricing services or from dealers who make markets in such securities. Debt securities priced via pricing services that utilize matrix pricing which considers readily observable inputs such as the yield or price of bonds of comparable quality, coupon, maturity and type as well as dealer supplied prices, are classified in Level 2. Debt securities that are typically priced by dealers and pricing services via the use of proprietary pricing models which incorporate significant unobservable inputs are classified in Level 3. These inputs primarily consist of yield and credit spread assumptions, discount rates, prepayment curves, default assumptions and recovery rates. Investment Funds, Private Equity and Debt Investments and Real Estate Investments Investment funds, private equity and debt investments and real estate investments are valued based on the Net Asset Value (NAV) per Share (or its equivalent) as a practical expedient to estimate fair value due to the absence of readily available market prices. NAV's are provided by the respective investment sponsors or investment advisers and are subsequently reviewed and approved by management. In the event management concludes a reported NAV does not reflect fair value or is not determined as of the financial reporting measurement date, we will consider whether and when deemed necessary to make an adjustment at the balance sheet date. In determining whether an adjustment to the external valuation is required, we will review material factors that could affect the valuation, such as changes in the composition or performance of the underlying investments or comparable investments, overall market conditions, expected sale prices for private investments which are probable of being sold in the short-term and other economic factors that may possibly have a favorable or unfavorable effect on the reported external valuation.
Stock Incentive Plans	Stock Incentive Plans Our stock incentive plans include RSUs, Restricted Stock Awards (RSAs), PSUs, stock options and awards that may be settled in our stock, the stock of our subsidiaries or in cash. We measure and record compensation expense based on the fair value of GM or Cruise's common stock on the date of grant for RSUs, RSAs and PSUs and the grant date fair value, determined utilizing a lattice model or the Black-Scholes formula, for stock options and PSUs. We record compensation cost for service-based RSUs, RSAs, PSUs and service-based stock options on a straight-line basis over the entire vesting period, or for retirement eligible employees over the requisite service period. RSUs granted in stock of Cruise vest upon satisfaction of both a service condition and a liquidity condition, defined as a change in control transaction or the consummation of an initial public offering. Compensation costs for RSUs granted in stock of Cruise will be recorded when the liquidity condition is met. Compensation cost for awards that do not have an established accounting grant date, but for which the service inception date has been established, or are settled in cash is based on the fair value of GM or Cruise's common stock at the end of each reporting period. We use the graded vesting method to record compensation cost for stock options with market conditions over the lesser of the vesting period or the time period an employee becomes eligible to retain the award at retirement.
Product Warranty and Recall Campaigns	Product Warranty and Recall Campaigns The estimated costs related to product warranties are accrued at the time products are sold and are charged to Automotive and other cost of sales. These estimates are established using historical information on the nature, frequency and average cost of claims of each vehicle line or each model year of the vehicle line and assumptions about future activity and events. Revisions are made when necessary and are based on changes in these factors. The estimated costs related to recall campaigns are accrued when probable and estimable, which is generally at the time of vehicle sale. In GMNA, we estimate the costs related to recall campaigns by applying a paid loss approach that considers the number of historical recall campaigns and the estimated cost for each recall campaign. The estimated costs associated with recall campaigns in other geographical regions are determined using the estimated costs of repairs and the estimated number of vehicles to be repaired. Costs associated with recall campaigns are charged to Automotive and other cost of sales. Revisions are made when necessary based on changes in these factors.
Income Taxes	Income Taxes The liability method is used in accounting for income taxes. Deferred tax assets and liabilities are recorded for temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements using the statutory tax rates in effect for the year in which the differences are expected to reverse. The effect on deferred tax assets and liabilities of a change in tax laws or rates is recorded in the results of operations in the period that includes the enactment date under the law. We establish valuation allowances for deferred tax assets based on a more likely than not standard. Deferred income tax assets are evaluated quarterly to determine if valuation allowances are required or should be adjusted. The ability to realize deferred tax assets depends on the ability to generate sufficient taxable income within the carryback or carryforward periods provided for in the tax law for each applicable tax jurisdiction. The assessment regarding whether a valuation allowance is required or should be adjusted also considers all available positive and negative evidence factors. It is difficult to conclude a valuation allowance is not required when there is significant objective and verifiable negative evidence, such as cumulative losses in recent years. We utilize a rolling three years of actual and current year results as the primary measure of cumulative losses in recent years. Income tax expense (benefit) for the year is allocated between continuing operations and other categories of income such as Other comprehensive income (loss). In periods in which there is a pre-tax loss from continuing operations and pre-tax income in another income category, the tax benefit allocated to continuing operations is determined by taking into account the pre-tax income of other categories. We record Global Intangible Low Tax Income (GILTI) as a current period expense when incurred.We record uncertain tax positions on the basis of a two-step process whereby we determine whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position, and for those tax positions that meet the more likely than not criteria, we recognize the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority. We record interest and penalties on uncertain tax positions in Income tax expense (benefit).
Foreign Currency Transactions and Translation	Foreign Currency Transactions and Translation The assets and liabilities of foreign subsidiaries that use the local currency as their functional currency are translated to U.S. Dollars based on the current exchange rate prevailing at each balance sheet date and any resulting translation adjustments are included in Accumulated other comprehensive loss. The assets and liabilities of foreign subsidiaries whose local currency is not their functional currency are remeasured from their local currency to their functional currency and then translated to U.S. Dollars. Revenues and expenses are translated into U.S. Dollars using the average exchange rates prevailing for each period presented. The financial statements of any foreign subsidiary that has been identified as having a highly inflationary economy are remeasured as if the functional currency were the U.S. Dollar. Gains and losses arising from foreign currency transactions and the effects of remeasurements discussed in the preceding paragraph are recorded in Automotive and other cost of sales and GM Financial interest, operating and other expenses unless related to Automotive debt, which are recorded in Interest income and other non-operating income, net. Foreign currency transaction and remeasurement losses were $203 million, gains of $85 million and losses of $168 million in the years ended December 31, 2020, 2019 and 2018.
Derivative Financial Instruments	Derivative Financial Instruments Derivative financial instruments are recognized as either assets or liabilities at fair value. The accounting for changes in the fair value of each derivative financial instrument depends on whether it has been designated and qualifies as an accounting hedge, as well as the type of hedging relationship identified. Derivative instruments are not used for trading or speculative purposes. Automotive We utilize options, swaps and forward contracts to manage foreign currency and commodity price risk. The change in fair value of option and forward contracts not designated as hedges is recorded in Interest income and other non-operating income, net. Cash flows for all derivative financial instruments are classified in cash flows from operating activities. We estimate the fair value of the PSA warrants using a Black-Scholes formula. The significant inputs to the model include the PSA stock price and the estimated dividend yield. We are entitled to receive any dividends declared by PSA through the conversion date upon exercise of the warrants. Gains or losses as a result of the change in the fair value of the PSA warrants are recorded in Interest income and other non-operating income, net. Automotive Financing - GM Financial GM Financial utilizes interest rate derivative instruments to manage interest rate risk and foreign currency derivative instruments to manage foreign currency risk. The change in fair value of the derivative instruments not designated as hedges is recorded in GM Financial interest, operating and other expenses. Cash flows for all derivative financial instruments are classified in cash flows from operating activities. Certain interest rate and foreign currency swap agreements have been designated as fair value hedges. The risk being hedged is the risk of changes in the fair value of the hedged debt attributable to changes in the benchmark interest rate or the risk of changes in fair value attributable to changes in foreign currency exchange rates. If the swap has been designated as a fair value hedge, the changes in the fair value of the hedged item are recorded in GM Financial interest, operating and other expenses. The change in fair value of the related hedge is also recorded in GM Financial interest, operating and other expenses. Certain interest rate swap and foreign currency swap agreements have been designated as cash flow hedges. The risk being hedged is the interest rate and foreign currency risk related to forecasted transactions. If the contract has been designated as a cash flow hedge, the change in the fair value of the cash flow hedge is deferred in Accumulated other comprehensive loss and is recognized in GM Financial interest, operating and other expenses along with the earnings effect of the hedged item when the hedged item affects earnings. Changes in the fair value of amounts excluded from the assessment of effectiveness are recorded currently in earnings and are presented in the same income statement line as the earnings effect of the hedged item.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards Effective January 1, 2020, we adopted ASU 2016-13, which requires entities to use a new impairment model based on current expected credit losses (CECL) rather than incurred losses. Estimated credit losses under CECL consider relevant information about past events, current conditions and reasonable and supportable forecasts that affect the collectability of financial assets, resulting in recognition of lifetime expected credit losses at initial recognition of the related asset. We adopted ASU 2016-13 on a modified retrospective basis by recognizing an after-tax cumulative-effect adjustment to the opening balance of Retained earnings of $660 million, inclusive of $643 million related to GM Financial. The application of ASU 2016-13 increased our allowance for loan losses related to GM Financial receivables, net by $801 million and had an insignificant impact to our allowance for credit losses for Accounts and notes receivable and no adoption impact to Marketable debt securities on our consolidated balance sheets.Effective July 1, 2020, we adopted ASU 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (ASU 2020-04), which provides optional expedients and exceptions for applying U.S. GAAP if certain criteria are met to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued, on a prospective basis. We do not believe the discontinuance of LIBOR will be a significant event for our Automotive arrangements. A substantial portion of GM Financial’s indebtedness bears interest at variable interest rates, primarily based on USD-LIBOR. The adoption of, and future elections under, ASU 2020-04 are not expected to have a material impact on our consolidated financial statements as the standard will ease, if warranted, the requirements for accounting for the future effects of the rate reform. We continue to monitor the impact the discontinuance of LIBOR or another reference rate will have on GM Financial's contracts, hedging relationships and other transactions.

Revenue (Tables)

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Schedule of Revenue by Major Source

The following table disaggregates our revenue by major source for revenue generating segments:


	Year Ended December 31, 2020
	GMNA		GMI		Corporate		Total Automotive		Cruise		GM Financial		Eliminations/ Reclassifications		Total
Vehicle, parts and accessories	$	92,749	$	10,593	$	1	$	103,343	$	—	$	—	$	—	$	103,343
Used vehicles	875		115		20		1,010		—		—		—		1,010
Services and other	3,109		878		329		4,316		103		—		(99)		4,320
Automotive net sales and revenue	96,733		11,586		350		108,669		103		—		(99)		108,673
Leased vehicle income	—		—		—		—		—		9,530		—		9,530
Finance charge income	—		—		—		—		—		3,996		(1)		3,995
Other income	—		—		—		—		—		305		(18)		287
GM Financial net sales and revenue	—		—		—		—		—		13,831		(19)		13,812
Net sales and revenue	$	96,733	$	11,586	$	350	$	108,669	$	103	$	13,831	$	(118)	$	122,485


	Year Ended December 31, 2019
	GMNA		GMI		Corporate		Total Automotive		Cruise		GM Financial		Eliminations/ Reclassifications		Total
Vehicle, parts and accessories	$	101,346	$	14,931	$	—	$	116,277	$	—	$	—	$	—	$	116,277
Used vehicles	1,896		123		—		2,019		—		—		—		2,019
Services and other	3,124		1,057		220		4,401		100		—		(100)		4,401
Automotive net sales and revenue	106,366		16,111		220		122,697		100		—		(100)		122,697
Leased vehicle income	—		—		—		—		—		10,032		—		10,032
Finance charge income	—		—		—		—		—		4,071		(7)		4,064
Other income	—		—		—		—		—		451		(7)		444
GM Financial net sales and revenue	—		—		—		—		—		14,554		(14)		14,540
Net sales and revenue	$	106,366	$	16,111	$	220	$	122,697	$	100	$	14,554	$	(114)	$	137,237


	Year Ended December 31, 2018
	GMNA		GMI		Corporate		Total Automotive		GM Financial		Eliminations		Total
Vehicle, parts and accessories	$	107,217	$	17,980	$	20	$	125,217	$	—	$	(62)	$	125,155
Used vehicles	3,215		175		—		3,390		—		(36)		3,354
Services and other	3,360		993		183		4,536		—		—		4,536
Automotive net sales and revenue	113,792		19,148		203		133,143		—		(98)		133,045
Leased vehicle income	—		—		—		—		9,963		—		9,963
Finance charge income	—		—		—		—		3,629		(8)		3,621
Other income	—		—		—		—		424		(4)		420
GM Financial net sales and revenue	—		—		—		—		14,016		(12)		14,004
Net sales and revenue	$	113,792	$	19,148	$	203	$	133,143	$	14,016	$	(110)	$	147,049

Marketable and Other Securities (Tables)

12 Months Ended

Dec. 31, 2020

Marketable Securities [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table summarizes the fair value of cash equivalents and marketable debt securities, which approximates cost:


	Fair Value Level	December 31, 2020		December 31, 2019
Cash and cash equivalents
Cash and time deposits(a)		$	8,010	$	6,828
Available-for-sale debt securities
U.S. government and agencies	2	1,370		1,484
Corporate debt	2	3,476		5,863
Sovereign debt	2	2,051		2,123
Total available-for-sale debt securities – cash equivalents		6,897		9,470
Money market funds	1	5,085		2,771
Total cash and cash equivalents(b)		$	19,992	$	19,069
Marketable debt securities
U.S. government and agencies	2	$	1,771	$	226
Corporate debt	2	3,630		2,932
Mortgage and asset-backed	2	632		681
Sovereign debt	2	3,013		335
Total available-for-sale debt securities – marketable securities(c)		$	9,046	$	4,174
Restricted cash
Cash and cash equivalents		$	269	$	292
Money market funds	1	2,856		3,582
Total restricted cash		$	3,125	$	3,874

Available-for-sale debt securities included above with contractual maturities(d)
Due in one year or less		$	12,533
Due between one and five years		2,778


Total available-for-sale debt securities with contractual maturities		$	15,311

__________

(b) Includes $761 million and $2.3 billion in Cruise at December 31, 2020 and 2019.

(d) Excludes mortgage- and asset-backed securities of $632 million at December 31, 2020 as these securities are not due at a single maturity date.

Investments Classified by Contractual Maturity Date

The following table summarizes the fair value of cash equivalents and marketable debt securities, which approximates cost:


	Fair Value Level	December 31, 2020		December 31, 2019
Cash and cash equivalents
Cash and time deposits(a)		$	8,010	$	6,828
Available-for-sale debt securities
U.S. government and agencies	2	1,370		1,484
Corporate debt	2	3,476		5,863
Sovereign debt	2	2,051		2,123
Total available-for-sale debt securities – cash equivalents		6,897		9,470
Money market funds	1	5,085		2,771
Total cash and cash equivalents(b)		$	19,992	$	19,069
Marketable debt securities
U.S. government and agencies	2	$	1,771	$	226
Corporate debt	2	3,630		2,932
Mortgage and asset-backed	2	632		681
Sovereign debt	2	3,013		335
Total available-for-sale debt securities – marketable securities(c)		$	9,046	$	4,174
Restricted cash
Cash and cash equivalents		$	269	$	292
Money market funds	1	2,856		3,582
Total restricted cash		$	3,125	$	3,874

Available-for-sale debt securities included above with contractual maturities(d)
Due in one year or less		$	12,533
Due between one and five years		2,778


Total available-for-sale debt securities with contractual maturities		$	15,311

__________

(b) Includes $761 million and $2.3 billion in Cruise at December 31, 2020 and 2019.

(d) Excludes mortgage- and asset-backed securities of $632 million at December 31, 2020 as these securities are not due at a single maturity date

Reconciliation of Cash, Cash Equivalents and Restricted Cash from Balance Sheet to Statement of Cash Flows


	December 31, 2020		December 31, 2019
Cash and cash equivalents	$	19,992	$	19,069
Restricted cash included in Other current assets	2,581		3,352
Restricted cash included in Other assets	544		522
Total	$	23,117	$	22,943

GM Financial Receivables and Transactions (Tables) - GM Financial

12 Months Ended

Dec. 31, 2020

Finance Receivables [Line Items]

GM Financial Receivables


	December 31, 2020						December 31, 2019
	Retail		Commercial(a)		Total		Retail		Commercial(a)		Total
GM Financial receivables	$	51,288	$	8,682	$	59,970	$	42,229	$	11,671	$	53,900
Less: allowance for loan losses	(1,915)		(63)		(1,978)		(866)		(78)		(944)
GM Financial receivables, net	$	49,373	$	8,619	$	57,992	$	41,363	$	11,593	$	52,956

Fair value of GM Financial receivables utilizing Level 2 inputs					$	8,619					$	11,593
Fair value of GM Financial receivables utilizing Level 3 inputs					$	51,645					$	41,973

__________

Allowance for Loan Losses


	Years Ended December 31,
	2020		2019		2018
Allowance for loan losses at beginning of period	$	944	$	911	$	942
Impact of adoption ASU 2016-13 (Note 2)	801		—		—
Provision for loan losses	881		726		642
Charge-offs	(1,169)		(1,246)		(1,199)
Recoveries	542		551		536
Effect of foreign currency	(21)		2		(10)
Allowance for loan losses at end of period	$	1,978	$	944	$	911

Intercompany Transactions


	December 31, 2020		December 31, 2019
Consolidated Balance Sheets(a)
Commercial finance receivables, net due from GM consolidated dealers	$	398	$	478

Subvention receivable(b)	$	642	$	676
Commercial loan funding payable	$	23	$	74


	Years Ended December 31,
	2020		2019		2018
Consolidated Statements of Income
Interest subvention earned on finance receivables	$	679	$	588	$	554
Leased vehicle subvention earned	$	3,042	$	3,273	$	3,274

__________

(a)All balance sheet amounts are eliminated upon consolidation.

(b)Our Automotive segments made cash payments to GM Financial for subvention of $3.9 billion, $4.1 billion, and $3.8 billion in the years ended December 31, 2020, 2019 and 2018.

Retail Finance Receivables

Finance Receivables [Line Items]

Commercial Finance Receivables Credit Quality

A summary of the amortized cost of the retail finance receivables by FICO score or its equivalent, determined at origination, for each vintage of the retail finance receivables portfolio at December 31, 2020 is as follows:


	Year of Origination												December 31, 2020				December 31, 2019
	2020		2019		2018		2017		2016		Prior		Total		Percent		Total		Percent
Prime – FICO score 680 and greater	$	18,685	$	7,033	$	4,491	$	1,917	$	555	$	119	$	32,800	64.0	%	$	25,400	60.1	%
Near-prime – FICO score 620 to 679	3,695		2,097		1,232		603		225		83		7,935		15.4	%	6,862		16.3	%
Sub-prime – FICO score less than 620	3,803		2,920		1,740		1,173		610		307		10,553		20.6	%	9,967		23.6	%
Retail finance receivables, net of fees	$	26,183	$	12,050	$	7,463	$	3,693	$	1,390	$	509	$	51,288	100.0	%	$	42,229	100.0	%

Retail Finance Receivables Delinquency

The following table is a consolidated summary of the delinquency status of the outstanding amortized cost of retail finance receivables for each vintage of the portfolio at December 31, 2020:


	Year of Origination												December 31, 2020			December 31, 2019
	2020		2019		2018		2017		2016		Prior			Total		Percent		Total(a)		Percent
0-to-30 days	$	25,894	$	11,591	$	7,131	$	3,454	$	1,249	$	421		$	49,740	97.0	%
31-to-60 days	210		325		235		170		102		61			1,103		2.1	%	$	1,354	3.2	%
Greater-than-60 days	72		123		90		64		37		26			412		0.8	%	542		1.3	%
Finance receivables more than 30 days delinquent	282		448		325		234		139		87			1,515		2.9	%	1,896		4.5	%
In repossession	7		11		7		5		2		1			33		0.1	%	44		0.1	%
Finance receivables more than 30 days delinquent or in repossession	289		459		332		239		141		88			1,548		3.0	%	$	1,940	4.6	%
Retail finance receivables, net of fees	$	26,183	$	12,050	$	7,463	$	3,693	$	1,390	$	509		$	51,288	100.0	%

__________

(a)Represents the contractual amounts of delinquent retail finance receivables, which is not significantly different than the outstanding amortized cost for such receivables.

Commercial Finance Receivables

Finance Receivables [Line Items]

Commercial Finance Receivables Credit Quality

The updated risk rating categories are as follows:


Rating						Description
I						Performing accounts with strong to acceptable financial metrics with at least satisfactory capacity to meet financial commitments.
II						Performing accounts experiencing potential weakness in financial metrics and repayment prospects resulting in increased monitoring.
III						Non-Performing accounts with inadequate paying capacity for current obligations and have the distinct possibility of creating a loss if deficiencies are not corrected.
IV						Non-Performing accounts with inadequate paying capacity for current obligations and inherent weaknesses that make collection of liquidation in full highly questionable or improbable.

The following table summarizes the credit risk profile by dealer risk rating of commercial finance receivables at December 31, 2020:


	Year of Origination(a)														December 31, 2020
	Revolving		2020		2019		2018		2017		2016		Prior			Total		Percent
I	$	6,968	$	510	$	159	$	63	$	95	$	43	$	19		$	7,857	90.5	%
II	491		2		18		2		3		18		34			568		6.5	%
III	203		—		8		29		2		11		—			253		2.9	%
IV	—		—		—		—		—		—		4			4		0.1	%
Commercial finance receivables, net of fees	$	7,662	$	512	$	185	$	94	$	100	$	72	$	57		$	8,682	100.0	%

_________

(a)Floorplan advances comprise 97% of the total revolving balance. Dealer term loans are presented by year of origination.

Inventories (Tables)

12 Months Ended

Dec. 31, 2020

Inventory Disclosure [Abstract]

Components of Inventories


	December 31, 2020		December 31, 2019
Total productive material, supplies and work in process	$	5,117	$	4,713
Finished product, including service parts	5,118		5,685
Total inventories	$	10,235	$	10,398

Equipment on Operating Leases (Tables) - Vehicles

12 Months Ended

Dec. 31, 2020

Property Subject to or Available for Operating Lease [Line Items]

Schedule of Property Subject to or Available for Operating Lease

Equipment on operating leases primarily consists of leases to retail customers of GM Financial. The current portion of net equipment on operating leases is included in Other current assets.


	December 31, 2020		December 31, 2019
Equipment on operating leases	$	50,000	$	53,081
Less: accumulated depreciation	(10,181)		(10,989)
Equipment on operating leases, net	$	39,819	$	42,092

GM Financial

Property Subject to or Available for Operating Lease [Line Items]

Schedule of Future Rental Payments Receivable for Operating Leases

The following table summarizes lease payments due to GM Financial on leases to retail customers:


	Years Ending December 31,
	2021		2022		2023		2024		2025		Thereafter		Total
Lease receipts under operating leases	$	6,142	$	3,783	$	1,441	$	112	$	2	$	—	$	11,480

Equity In Net Assets Of Nonconsolidated Affiliates (Tables)

12 Months Ended

Dec. 31, 2020

Schedule of Equity Method Investments [Line Items]

Schedule of Equity Income

Revenue and expenses of our joint ventures are not consolidated into our financial statements; rather, our proportionate share of the earnings of each joint venture is reflected as Equity income.


	Years Ended December 31,
	2020		2019		2018
Automotive China equity income	$	512	$	1,132	$	1,981
Other joint ventures equity income	162		136		182
Total Equity income	$	674	$	1,268	$	2,163

Carrying Amount of Investments in Nonconsolidated Affiliates

Investments in Nonconsolidated Affiliates


	December 31, 2020		December 31, 2019
Automotive China carrying amount	$	6,599	$	7,044
Other investments carrying amount	1,807		1,518
Total equity in net assets of nonconsolidated affiliates	$	8,406	$	8,562

Summarized Financial Data for Nonconsolidated Affiliates

Summarized Financial Data of Nonconsolidated Affiliates


	December 31, 2020						December 31, 2019
	Automotive China JVs		Others		Total		Automotive China JVs		Others		Total
Summarized Balance Sheet Data
Current assets	$	17,604	$	16,844	$	34,448	$	14,035	$	13,319	$	27,354
Non-current assets	14,875		8,634		23,509		14,484		6,680		21,164
Total assets	$	32,479	$	25,478	$	57,957	$	28,519	$	19,999	$	48,518

Current liabilities	$	25,633	$	14,808	$	40,441	$	21,256	$	11,588	$	32,844
Non-current liabilities	1,163		6,654		7,817		968		5,017		5,985
Total liabilities	$	26,796	$	21,462	$	48,258	$	22,224	$	16,605	$	38,829

Noncontrolling interests	$	824	$	1	$	825	$	847	$	1	$	848


	Years Ended December 31,
	2020		2019		2018
Summarized Operating Data
Automotive China JVs' net sales	$	38,736	$	39,123	$	50,316
Others' net sales	1,850		1,815		1,721
Total net sales	$	40,586	$	40,938	$	52,037

Automotive China JVs' net income	$	1,239	$	2,258	$	3,992
Others' net income	436		477		536
Total net income	$	1,675	$	2,735	$	4,528

Nonconsolidated Affiliates

Schedule of Equity Method Investments [Line Items]

Transactions with and Balances Related to Nonconsolidated Affiliates

The following tables summarize transactions with and balances related to our nonconsolidated affiliates:


	Years Ended December 31,
	2020		2019		2018
Automotive sales and revenue	$	235	$	199	$	406
Automotive purchases, net	$	165	$	1,065	$	1,155
Dividends received	$	1,198	$	1,852	$	2,022
Operating cash flows	$	1,473	$	913	$	657


	December 31, 2020		December 31, 2019
Accounts and notes receivable, net	$	954	$	1,007
Accounts payable	$	494	$	369
Undistributed earnings	$	1,594	$	2,118

China JVs

Schedule of Equity Method Investments [Line Items]

Schedule of Equity Method Investments

The following table summarizes our direct ownership interests in our China JVs:


	December 31, 2020		December 31, 2019
Automotive China JVs
SAIC General Motors Corp., Ltd. (SGM)	50	%	50	%
Pan Asia Technical Automotive Center Co., Ltd.	50	%	50	%
SAIC General Motors Sales Co., Ltd.	49	%	49	%
SAIC GM Wuling Automobile Co., Ltd. (SGMW)	44	%	44	%
Shanghai OnStar Telematics Co., Ltd. (Shanghai OnStar)	40	%	40	%
SAIC GM (Shenyang) Norsom Motors Co., Ltd. (SGM Norsom)	25	%	25	%
SAIC GM Dong Yue Motors Co., Ltd. (SGM DY)	25	%	25	%
SAIC GM Dong Yue Powertrain Co., Ltd. (SGM DYPT)	25	%	25	%
Other joint ventures
SAIC-GMAC Automotive Finance Company Limited (SAIC-GMAC)	35	%	35	%
SAIC-GMF Leasing Co., Ltd.	35	%	35	%

Property (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment, Net [Abstract]

Property, Plant and Equipment


	Estimated Useful Lives in Years	December 31, 2020		December 31, 2019
Land		$	1,339	$	1,302
Buildings and improvements	5-40	9,671		9,705
Machinery and equipment	3-27	30,013		29,814
Special tools	1-13	20,851		23,586
Construction in progress		3,581		3,042
Total property		65,455		67,449
Less: accumulated depreciation		(27,823)		(28,699)
Total property, net		$	37,632	$	38,750

Depreciation Amortization and Impairment of Property Plant and Equipment

The amount of interest capitalized and excluded from Automotive interest expense related to Property, net was insignificant in the years ended December 31, 2020, 2019 and 2018.


	Years Ended December 31,
	2020		2019		2018
Depreciation and amortization expense	$	5,354	$	6,541	$	5,347
Impairment charges	$	86	$	7	$	466


Capitalized software amortization expense(a)	$	457	$	452	$	424

__________

(a) Included in depreciation and amortization expense.

Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Components of Intangible Assets


	December 31, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Technology and intellectual property	$	762	$	542	$	220	$	734	$	533	$	201
Brands	4,300		1,444		2,856		4,298		1,285		3,013
Dealer network, customer relationships and other	981		737		244		966		702		264
Total intangible assets	$	6,043	$	2,723	$	3,320	$	5,998	$	2,520	$	3,478

Variable Interest Entities (Tables)

12 Months Ended

Dec. 31, 2020

GM Financial | Variable Interest Entity, Primary Beneficiary

Variable Interest Entity [Line Items]

Schedule of Variable Interest Entities

The following table summarizes the assets and liabilities related to GM Financial's consolidated VIEs:


	December 31, 2020		December 31, 2019
Restricted cash – current	$	2,190	$	2,202
Restricted cash – non-current	$	449	$	441
GM Financial receivables, net of fees – current	$	17,211	$	19,081
GM Financial receivables, net of fees – non-current	$	15,107	$	15,921
GM Financial equipment on operating leases, net	$	16,322	$	14,464
GM Financial short-term debt and current portion of long-term debt	$	20,450	$	23,952
GM Financial long-term debt	$	18,974	$	15,819

- Definition

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

+ References + Details

Accrued and Other Liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Accrued Liabilities and Other Liabilities [Abstract]

Accrued and Other Liabilities


	December 31, 2020		December 31, 2019
Accrued liabilities
Dealer and customer allowances, claims and discounts	$	7,300	$	10,402
Deferred revenue	3,132		3,234
Product warranty and related liabilities	3,048		2,987
Payrolls and employee benefits excluding postemployment benefits	1,864		1,969
Other	7,725		7,895
Total accrued liabilities	$	23,069	$	26,487

Other liabilities
Deferred revenue	$	2,715	$	2,962
Product warranty and related liabilities	5,193		4,811
Operating lease liabilities	969		1,010
Employee benefits excluding postemployment benefits	822		704
Postemployment benefits including facility idling reserves	739		633
Other	3,009		3,026
Total other liabilities	$	13,447	$	13,146

Product Warranty and Related Liabilities


	Years Ended December 31,
	2020		2019		2018
Product Warranty and Related Liabilities
Warranty balance at beginning of period	$	7,798	$	7,590	$	8,332
Warranties issued and assumed in period – recall campaigns	1,628		745		665
Warranties issued and assumed in period – product warranty	1,773		2,001		2,143
Payments	(2,986)		(3,012)		(2,903)
Adjustments to pre-existing warranties	41		455		(464)
Effect of foreign currency and other	(12)		19		(183)
Warranty balance at end of period	$	8,242	$	7,798	$	7,590

Debt (Tables)

12 Months Ended

Dec. 31, 2020

Interest expense


	Years Ended December 31,
	2020		2019		2018
Automotive interest expense	$	1,098	$	782	$	655
Automotive Financing - GM Financial interest expense	3,023		3,641		3,225
Total interest expense	$	4,121	$	4,423	$	3,880

Schedule of maturities of long-term debt

The following table summarizes contractual maturities including finance leases at December 31, 2020:


	Automotive		Automotive Financing		Total
2021	$	1,276	$	35,742	$	37,018
2022	137		19,312		19,449
2023	2,593		15,267		17,860
2024	86		7,808		7,894
2025	2,578		6,609		9,187
Thereafter	11,339		7,277		18,616
	$	18,009	$	92,015	$	110,024

Automotive

Debt carrying amount and fair value

The following table presents debt in our automotive operations:


	December 31, 2020					December 31, 2019
	Carrying Amount		Fair Value			Carrying Amount		Fair Value
Secured debt	$	303	$	332		$	167	$	165
Unsecured debt	16,929		20,988			13,909		15,247
Finance lease liabilities	237		256			310		516
Total automotive debt(a)	$	17,469	$	21,576		$	14,386	$	15,928

Fair value utilizing Level 1 inputs			$	19,826				$	13,628
Fair value utilizing Level 2 inputs			$	1,750				$	2,300


Available under credit facility agreements(b)			$	18,222				$	17,285
Weighted-average interest rate on outstanding short-term debt(c)			3.8		%			4.9		%
Weighted-average interest rate on outstanding long-term debt(c)			5.6		%			5.4		%

__________

(a)Includes net discount and debt issuance costs of $540 million at December 31, 2020 and 2019.

(b)Excludes our 364-day, $2.0 billion facility designated for exclusive use by GM Financial.

(c)Includes coupon rates on debt denominated in various foreign currencies and interest free loans.

GM Financial

Debt carrying amount and fair value

The following table presents debt of GM Financial:


	December 31, 2020				December 31, 2019
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Secured debt	$	39,982	$	40,380	$	39,959	$	40,160
Unsecured debt	52,443		54,568		48,979		50,239
Total GM Financial debt	$	92,425	$	94,948	$	88,938	$	90,399

Fair value utilizing Level 2 inputs			$	92,922			$	88,481
Fair value utilizing Level 3 inputs			$	2,026			$	1,918

Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2020

Automotive

Derivative [Line Items]

Schedule of Notional Amounts for Derivative Financial Instruments

The following table presents the notional amounts of derivative financial instruments in our automotive operations:


	Fair Value Level	December 31, 2020		December 31, 2019
Derivatives not designated as hedges(a)
Foreign currency	2	$	2,195	$	5,075
Commodity	2	341		806
PSA Warrants(b)	2	49		45
Total derivative financial instruments		$	2,585	$	5,926

__________

GM Financial

Derivative [Line Items]

Schedule of Notional Amounts for Derivative Financial Instruments

The following table presents the gross fair value amounts of GM Financial's derivative financial instruments and the associated notional amounts:


	Fair Value Level	December 31, 2020						December 31, 2019
		Notional		Fair Value of Assets		Fair Value of Liabilities		Notional		Fair Value of Assets		Fair Value of Liabilities
Derivatives designated as hedges(a)
Fair value hedges
Interest rate swaps	2	$	10,064	$	463	$	13	$	9,458	$	234	$	23
Foreign currency swaps	2	1,958		128		9		1,796		22		71
Cash flow hedges
Interest rate swaps	2	921		—		27		590		—		6
Foreign currency swaps	2	5,626		278		47		4,429		40		119
Derivatives not designated as hedges(a)
Interest rate contracts	2	110,997		954		576		92,400		340		300
Total derivative financial instruments(b)		$	129,566	$	1,823	$	672	$	108,673	$	636	$	519

__________

Schedule of Fair Value Hedging Instruments

The following amounts were recorded in the consolidated balance sheets related to items designated and qualifying as hedged items in fair value hedging relationships:


	December 31, 2020				December 31, 2019
	Carrying Amount of Hedged Items		Cumulative Amount of Fair Value Hedging Adjustments(a)		Carrying Amount of Hedged Items		Cumulative Amount of Fair Value Hedging Adjustments(a)
Short-term unsecured debt	$	4,858	$	(69)	$	996	$	4
Long-term unsecured debt	18,457		(670)		19,401		(81)
GM Financial unsecured debt	$	23,315	$	(739)	$	20,397	$	(77)

__________

(a)Includes $200 million of unamortized gains and an insignificant amount of amortization remaining on hedged items for which hedge accounting has been discontinued at December 31, 2020 and 2019.

Pensions And Other Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2020

Defined Benefit Plan Disclosure [Line Items]

Changes in Benefit Obligations, Plan Assets and Funded Status


	Year Ended December 31, 2020						Year Ended December 31, 2019
	Pension Benefits				Global OPEB Plans		Pension Benefits				Global OPEB Plans
	U.S.		Non-U.S.				U.S.		Non-U.S.
Change in benefit obligations
Beginning benefit obligation	$	64,684	$	21,398	$	6,304	$	61,190	$	19,904	$	5,744
Service cost	177		133		19		179		120		17
Interest cost	1,716		362		173		2,264		456		220


Actuarial losses	4,757		1,506		551		6,444		1,653		641
Benefits paid	(4,600)		(1,132)		(408)		(4,753)		(1,234)		(395)
Foreign currency translation adjustments	—		870		(3)		—		561		54

Curtailments, settlements and other	(266)		(2,330)		20		(640)		(62)		23
Ending benefit obligation	66,468		20,807		6,656		64,684		21,398		6,304
Change in plan assets
Beginning fair value of plan assets	59,239		14,961		—		56,102		13,528		—
Actual return on plan assets	6,635		1,573		—		8,454		1,669		—
Employer contributions	68		396		387		83		532		370

Benefits paid	(4,600)		(1,132)		(408)		(4,753)		(1,234)		(395)
Foreign currency translation adjustments	—		389		—		—		668		—


Settlements and other	(265)		(2,341)		21		(647)		(202)		25
Ending fair value of plan assets	61,077		13,846		—		59,239		14,961		—
Ending funded status	$	(5,391)	$	(6,961)	$	(6,656)	$	(5,445)	$	(6,437)	$	(6,304)
Amounts recorded in the consolidated balance sheets
Non-current assets	$	—	$	980	$	—	$	—	$	698	$	—
Current liabilities	(66)		(364)		(379)		(68)		(342)		(369)
Non-current liabilities	(5,325)		(7,577)		(6,277)		(5,377)		(6,793)		(5,935)
Net amount recorded	$	(5,391)	$	(6,961)	$	(6,656)	$	(5,445)	$	(6,437)	$	(6,304)
Amounts recorded in Accumulated other comprehensive loss
Net actuarial loss	$	(3,256)	$	(5,123)	$	(1,823)	$	(1,980)	$	(4,688)	$	(1,364)
Net prior service (cost) credit	11		(60)		20		14		(78)		27
Total recorded in Accumulated other comprehensive loss	$	(3,245)	$	(5,183)	$	(1,803)	$	(1,966)	$	(4,766)	$	(1,337)

Schedule of amounts recorded in the consolidated balance sheets


	Year Ended December 31, 2020						Year Ended December 31, 2019
	Pension Benefits				Global OPEB Plans		Pension Benefits				Global OPEB Plans
	U.S.		Non-U.S.				U.S.		Non-U.S.
Change in benefit obligations
Beginning benefit obligation	$	64,684	$	21,398	$	6,304	$	61,190	$	19,904	$	5,744
Service cost	177		133		19		179		120		17
Interest cost	1,716		362		173		2,264		456		220


Actuarial losses	4,757		1,506		551		6,444		1,653		641
Benefits paid	(4,600)		(1,132)		(408)		(4,753)		(1,234)		(395)
Foreign currency translation adjustments	—		870		(3)		—		561		54

Curtailments, settlements and other	(266)		(2,330)		20		(640)		(62)		23
Ending benefit obligation	66,468		20,807		6,656		64,684		21,398		6,304
Change in plan assets
Beginning fair value of plan assets	59,239		14,961		—		56,102		13,528		—
Actual return on plan assets	6,635		1,573		—		8,454		1,669		—
Employer contributions	68		396		387		83		532		370

Benefits paid	(4,600)		(1,132)		(408)		(4,753)		(1,234)		(395)
Foreign currency translation adjustments	—		389		—		—		668		—


Settlements and other	(265)		(2,341)		21		(647)		(202)		25
Ending fair value of plan assets	61,077		13,846		—		59,239		14,961		—
Ending funded status	$	(5,391)	$	(6,961)	$	(6,656)	$	(5,445)	$	(6,437)	$	(6,304)
Amounts recorded in the consolidated balance sheets
Non-current assets	$	—	$	980	$	—	$	—	$	698	$	—
Current liabilities	(66)		(364)		(379)		(68)		(342)		(369)
Non-current liabilities	(5,325)		(7,577)		(6,277)		(5,377)		(6,793)		(5,935)
Net amount recorded	$	(5,391)	$	(6,961)	$	(6,656)	$	(5,445)	$	(6,437)	$	(6,304)
Amounts recorded in Accumulated other comprehensive loss
Net actuarial loss	$	(3,256)	$	(5,123)	$	(1,823)	$	(1,980)	$	(4,688)	$	(1,364)
Net prior service (cost) credit	11		(60)		20		14		(78)		27
Total recorded in Accumulated other comprehensive loss	$	(3,245)	$	(5,183)	$	(1,803)	$	(1,966)	$	(4,766)	$	(1,337)

Schedule of Projected Benefit Obligations in Excess of Fair Value of Plan Assets


	December 31, 2020				December 31, 2019
	U.S.		Non-U.S.		U.S.		Non-U.S.
ABO	$	66,448	$	20,721	$	64,669	$	21,319
Plans with ABO in excess of plan assets
ABO	$	66,448	$	12,042	$	64,669	$	10,996
Fair value of plan assets	$	61,077	$	4,185	$	59,239	$	3,940
Plans with PBO in excess of plan assets
PBO	$	66,468	$	12,128	$	64,684	$	11,079
Fair value of plan assets	$	61,077	$	4,186	$	59,239	$	3,940

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets


	December 31, 2020				December 31, 2019
	U.S.		Non-U.S.		U.S.		Non-U.S.
ABO	$	66,448	$	20,721	$	64,669	$	21,319
Plans with ABO in excess of plan assets
ABO	$	66,448	$	12,042	$	64,669	$	10,996
Fair value of plan assets	$	61,077	$	4,185	$	59,239	$	3,940
Plans with PBO in excess of plan assets
PBO	$	66,468	$	12,128	$	64,684	$	11,079
Fair value of plan assets	$	61,077	$	4,186	$	59,239	$	3,940

Schedule of Net Periodic Pension and OPEB expense

The following table summarizes the components of net periodic pension and OPEB expense along with the assumptions used to determine benefit obligations:


	Year Ended December 31, 2020									Year Ended December 31, 2019									Year Ended December 31, 2018
	Pension Benefits						Global OPEB Plans			Pension Benefits						Global OPEB Plans			Pension Benefits						Global OPEB Plans
	U.S.			Non-U.S.						U.S.			Non-U.S.						U.S.			Non-U.S.
Components of expense
Service cost	$	251		$	145		$	19		$	393		$	132		$	17		$	330		$	163		$	20
Interest cost	1,716			362			173			2,264			456			220			2,050			464			195
Expected return on plan assets	(3,267)			(675)			—			(3,483)			(786)			—			(3,890)			(825)			—
Amortization of net actuarial losses	16			171			74			11			122			30			10			144			54
Curtailments, settlements and other	17			241			(8)			21			142			(23)			(19)			43			(19)
Net periodic pension and OPEB (income) expense	$	(1,267)		$	244		$	258		$	(794)		$	66		$	244		$	(1,519)		$	(11)		$	250
Weighted-average assumptions used to determine benefit obligations(a)
Discount rate	2.37		%	1.62		%	2.53		%	3.20		%	2.16		%	3.24		%	4.22		%	2.86		%	4.19		%
Weighted-average assumptions used to determine net expense(a)
Discount rate	2.84		%	2.80		%	3.00		%	3.92		%	3.36		%	4.07		%	3.19		%	2.99		%	3.29		%
Expected rate of return on plan assets	5.88		%	4.96		%	N/A			6.37		%	5.76		%	N/A			6.61		%	6.09		%	N/A

_________

(a) The rate of compensation increase and the cash balance interest crediting rates do not have a significant effect on our U.S. pension and OPEB plans.

Schedule of Assumptions Used

The following table summarizes the components of net periodic pension and OPEB expense along with the assumptions used to determine benefit obligations:


	Year Ended December 31, 2020									Year Ended December 31, 2019									Year Ended December 31, 2018
	Pension Benefits						Global OPEB Plans			Pension Benefits						Global OPEB Plans			Pension Benefits						Global OPEB Plans
	U.S.			Non-U.S.						U.S.			Non-U.S.						U.S.			Non-U.S.
Components of expense
Service cost	$	251		$	145		$	19		$	393		$	132		$	17		$	330		$	163		$	20
Interest cost	1,716			362			173			2,264			456			220			2,050			464			195
Expected return on plan assets	(3,267)			(675)			—			(3,483)			(786)			—			(3,890)			(825)			—
Amortization of net actuarial losses	16			171			74			11			122			30			10			144			54
Curtailments, settlements and other	17			241			(8)			21			142			(23)			(19)			43			(19)
Net periodic pension and OPEB (income) expense	$	(1,267)		$	244		$	258		$	(794)		$	66		$	244		$	(1,519)		$	(11)		$	250
Weighted-average assumptions used to determine benefit obligations(a)
Discount rate	2.37		%	1.62		%	2.53		%	3.20		%	2.16		%	3.24		%	4.22		%	2.86		%	4.19		%
Weighted-average assumptions used to determine net expense(a)
Discount rate	2.84		%	2.80		%	3.00		%	3.92		%	3.36		%	4.07		%	3.19		%	2.99		%	3.29		%
Expected rate of return on plan assets	5.88		%	4.96		%	N/A			6.37		%	5.76		%	N/A			6.61		%	6.09		%	N/A

_________

(a) The rate of compensation increase and the cash balance interest crediting rates do not have a significant effect on our U.S. pension and OPEB plans.

Schedule of Expected Net Benefit Payments

The following table summarizes net benefit payments expected to be paid in the future, which include assumptions related to estimated future employee service:


	Pension Benefits				Global OPEB Plans
	U.S. Plans		Non-U.S. Plans		Global OPEB Plans
2021	$	4,821	$	1,172	$	379
2022	$	4,614	$	1,070	$	374
2023	$	4,495	$	1,038	$	369
2024	$	4,387	$	1,015	$	364
2025	$	4,278	$	1,000	$	361
2026 - 2030	$	19,469	$	4,673	$	1,761

Pension Plan

Defined Benefit Plan Disclosure [Line Items]

Schedule of contributions to defined benefit pension plans

The following table summarizes contributions made to the defined benefit pension plans:


	Years Ended December 31,
	2020		2019		2018
U.S. hourly and salaried	$	68	$	83	$	76
Non-U.S.	396		532		1,624
Total	$	464	$	615	$	1,700

Schedules of Fair Value of Plan Assets by Asset Class and Target Allocations

The following table summarizes the target allocations by asset category for U.S. and non-U.S. defined benefit pension plans:


	December 31, 2020				December 31, 2019
	U.S.		Non-U.S.		U.S.		Non-U.S.
Equity	12	%	16	%	12	%	14	%
Debt	64	%	66	%	64	%	67	%
Other(a)	24	%	18	%	24	%	19	%
Total	100	%	100	%	100	%	100	%

__________

(a) Primarily includes private equity, real estate and absolute return strategies which mainly consist of hedge funds.

Assets and Fair Value Measurements The following tables summarize the fair value of U.S. and non-U.S. defined benefit pension plan assets by asset class:


	December 31, 2020								December 31, 2019
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
U.S. Pension Plan Assets


Common and preferred stocks	$	7,429	$	—	$	1	$	7,430	$	6,232	$	19	$	1	$	6,252
Government and agency debt securities(a)	—		13,231		—		13,231		—		13,843		—		13,843
Corporate and other debt securities	—		26,475		—		26,475		—		24,809		—		24,809



Other investments, net(b)(c)	(834)		(8)		427		(415)		(47)		25		401		379




Net plan assets subject to leveling	$	6,595	$	39,698	$	428	46,721		$	6,185	$	38,696	$	402	45,283
Plan assets measured at net asset value
Investment funds							7,534								7,031
Private equity and debt investments							3,137								2,951
Real estate investments							3,061								3,484
Total plan assets measured at net asset value							13,732								13,466
Other plan assets, net(d)							624								490
Net plan assets							$	61,077							$	59,239


	December 31, 2020								December 31, 2019
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Non-U.S. Pension Plan Assets


Common and preferred stocks	$	572	$	—	$	—	$	572	$	489	$	1	$	—	$	490
Government and agency debt securities(a)	—		3,178		—		3,178		—		3,927		—		3,927
Corporate and other debt securities	—		2,762		—		2,762		—		3,230		—		3,230



Other investments, net(b)(e)	31		(79)		127		79		(5)		(107)		248		136




Net plan assets subject to leveling	$	603	$	5,861	$	127	6,591		$	484	$	7,051	$	248	7,783
Plan assets measured at net asset value
Investment funds							5,870								5,608
Private equity and debt investments							489								511
Real estate investments							917								982
Total plan assets measured at net asset value							7,276								7,101
Other plan assets (liabilities), net(d)							(21)								77
Net plan assets							$	13,846							$	14,961

__________

(a)Includes U.S. and sovereign government and agency issues.

(b)Includes net derivative assets (liabilities).

(c)Level 1 Other investments, net includes derivative liabilities approximating $1.0 billion related to equity option and futures contracts at December 31, 2020.

(d)Cash held by the plans, net of amounts receivable/payable for unsettled security transactions and payables for investment manager fees, custody fees and other expenses.

(e)Level 2 Other investments, net includes Canadian reverse repurchase agreements.

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Income before Income Taxes and Equity Income


	Years Ended December 31,
	2020		2019		2018
U.S. income	$	6,881	$	3,826	$	4,433
Non-U.S. income	540		2,342		1,953
Income before income taxes and equity income	$	7,421	$	6,168	$	6,386

Schedule of Components of Income Tax Expense (Benefit)


	Years Ended December 31,
	2020		2019		2018
Current income tax expense (benefit)
U.S. federal	$	84	$	42	$	(104)
U.S. state and local	272		102		113
Non-U.S.	493		758		577
Total current income tax expense	849		902		586
Deferred income tax expense (benefit)
U.S. federal	632		(145)		(578)
U.S. state and local	(15)		3		250
Non-U.S.	308		9		216
Total deferred income tax expense (benefit)	925		(133)		(112)
Total income tax expense	$	1,774	$	769	$	474

Schedule of Effective Income Tax Rate Reconciliation


	Years Ended December 31,
	2020		2019		2018
Income tax expense at U.S. federal statutory income tax rate	$	1,558	$	1,295	$	1,341
State and local tax expense	219		117		282
Non-U.S. income taxed at other than the U.S. federal statutory tax rate	(1)		166		90
U.S. tax impact on Non-U.S. income and activities	(160)		(197)		(822)
Change in valuation allowances	370		(233)		1,695
Change in tax laws	—		(122)		(134)
General business credits and manufacturing incentives	(366)		(420)		(695)
Capital loss expiration	—		—		107
Settlements of prior year tax matters	(18)		—		(188)
Realization of basis differences in affiliates	(12)		—		(59)
German statutory approval of net operating losses	—		—		(990)
Foreign currency remeasurement	(7)		74		19
Other adjustments	191		89		(172)
Total income tax expense	$	1,774	$	769	$	474

Schedule of Deferred Tax Assets and Liabilities

The following table summarizes the components of temporary differences and carryforwards that give rise to deferred tax assets and liabilities:


	December 31, 2020		December 31, 2019
Deferred tax assets
Postretirement benefits other than pensions	$	1,742	$	1,695
Pension and other employee benefit plans	2,999		2,968
Warranties, dealer and customer allowances, claims and discounts	5,538		6,299

U.S. capitalized research expenditures	6,763		6,035
U.S. operating loss and tax credit carryforwards(a)	7,254		8,686
Non-U.S. operating loss and tax credit carryforwards(b)	7,216		6,731
Miscellaneous	3,479		1,965
Total deferred tax assets before valuation allowances	34,991		34,379
Less: valuation allowances	(9,095)		(8,135)
Total deferred tax assets	25,896		26,244
Deferred tax liabilities
Property, plant and equipment	1,670		1,565
Intangible assets	744		763
Total deferred tax liabilities	2,414		2,328
Net deferred tax assets	$	23,482	$	23,916

_________

Schedule of Unrecognized Tax Benefits Roll Forward

The following table summarizes activity of the total amounts of unrecognized tax benefits:


	Years Ended December 31,
	2020		2019		2018
Balance at beginning of period	$	775	$	1,341	$	1,557
Additions to current year tax positions	435		18		292
Additions to prior years' tax positions	26		13		264
Reductions to prior years' tax positions	(132)		(501)		(244)
Reductions in tax positions due to lapse of statutory limitations	(3)		(8)		(38)
Settlements	(10)		(93)		(450)
Other	(5)		5		(40)
Balance at end of period	$	1,086	$	775	$	1,341

Restructuring And Other Initiatives (Tables)

12 Months Ended

Dec. 31, 2020

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Related Costs

The following table summarizes the reserves and charges related to restructuring and other initiatives, including postemployment benefit reserves and charges:


	Years Ended December 31,
	2020		2019		2018
Balance at beginning of period	$	564	$	1,122	$	227
Additions, interest accretion and other	565		629		1,637
Payments	(678)		(1,101)		(600)
Revisions to estimates and effect of foreign currency	(99)		(86)		(142)
Balance at end of period	$	352	$	564	$	1,122

Interest Income and Other Non-Operating Income (Tables)

12 Months Ended

Dec. 31, 2020

Other Income and Expenses [Abstract]

Schedule of Interest Income and Other Non-Operating Income, net


	Years Ended December 31,
	2020		2019		2018
Non-service pension and OPEB income	$	1,095	$	797	$	1,665
Interest income	241		429		335
Licensing agreements income	211		165		296
Revaluation of investments	265		80		258
Other	73		(2)		42
Total interest income and other non-operating income, net	$	1,885	$	1,469	$	2,596

Stockholders' Equity and Noncontrolling Interests (Tables)

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

Schedule of Accumulated Other Comprehensive Loss

The following table summarizes the significant components of Accumulated other comprehensive loss:


	Years Ended December 31,
	2020		2019		2018
Foreign Currency Translation Adjustments
Balance at beginning of period	$	(2,278)	$	(2,250)	$	(1,606)
Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of tax and impact of adoption of accounting standards(a)(b)	(480)		(56)		(664)
Reclassification adjustment, net of tax(a)	23		28		20
Other comprehensive loss, net of tax(a)	(457)		(28)		(644)
Balance at end of period	$	(2,735)	$	(2,278)	$	(2,250)
Defined Benefit Plans
Balance at beginning of period	$	(8,859)	$	(6,737)	$	(6,398)
Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of impact of adoption of accounting standards(b)	(2,661)		(2,769)		(580)
Tax benefit	444		463		100
Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of tax and impact of adoption of accounting standards(b)	(2,217)		(2,306)		(480)
Reclassification adjustment, net of tax(a)	422		184		141
Other comprehensive loss, net of tax	(1,795)		(2,122)		(339)
Balance at end of period(c)	$	(10,654)	$	(8,859)	$	(6,737)

__________

(a) The income tax effect was insignificant in the years ended December 31, 2020, 2019 and 2018.

(b) The noncontrolling interests are insignificant in the years ended December 31, 2020, 2019 and 2018.

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted


	Years Ended December 31,
	2020		2019		2018
Basic earnings per share
Income from continuing operations	$	6,427	$	6,732	$	8,084
Less: cumulative dividends on subsidiary preferred stock	(180)		(151)		(98)
Income from continuing operations attributable to common stockholders	6,247		6,581		7,986
Loss from discontinued operations, net of tax	—		—		70
Net income attributable to common stockholders	$	6,247	$	6,581	$	7,916

Weighted-average common shares outstanding	1,433		1,424		1,411

Basic earnings per common share – continuing operations	$	4.36	$	4.62	$	5.66
Basic loss per common share – discontinued operations	$	—	$	—	$	0.05
Basic earnings per common share	$	4.36	$	4.62	$	5.61
Diluted earnings per share
Income from continuing operations attributable to common stockholders – diluted	$	6,247	$	6,581	$	7,986
Loss from discontinued operations, net of tax – diluted	$	—	$	—	$	70
Net income attributable to common stockholders – diluted	$	6,247	$	6,581	$	7,916

Weighted-average common shares outstanding – basic	1,433		1,424		1,411
Dilutive effect of warrants and awards under stock incentive plans	9		15		20
Weighted-average common shares outstanding – diluted	1,442		1,439		1,431

Diluted earnings per common share – continuing operations	$	4.33	$	4.57	$	5.58
Diluted loss per common share – discontinued operations	$	—	$	—	$	0.05
Diluted earnings per common share	$	4.33	$	4.57	$	5.53

Potentially dilutive securities(a)	7		7		9

__________

(a) Potentially dilutive securities attributable to outstanding stock options and RSUs were excluded from the computation of diluted EPS because the securities would have had an antidilutive effect.

Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2020

Discontinued Operations and Disposal Groups [Abstract]

Disposal Groups, Including Discontinued Operations


	Years Ended December 31,
	2020		2019		2018
Net sales and revenue(a)	$	144	$	1,129	$	1,939
Purchases and expenses(a)	$	392	$	825	$	1,422
Cash payments(b)	$	630	$	975	$	1,849
Cash receipts(b)	$	252	$	1,408	$	2,310

__________

(a) Included in Income from continuing operations.

(b) Included in Net cash provided by operating activities.

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3A
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 205
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-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1474-107760

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-Section 50
-Paragraph 5D
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721677-107760

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=109222160&loc=SL51721533-107759

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 205
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-Section 50
-Paragraph 3A
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721659-107760

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 205
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-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721665-107760

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721675-107760

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760

Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721671-107760

Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 205
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

Reference 13: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721663-107760

+ Details

Stock Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Share-based Compensation Activity


	Shares (in millions)	Weighted-Average Grant Date Fair Value		Weighted-Average Remaining Contractual Term in Years
Units outstanding at January 1, 2020	41.5	$	19.17	0.9
Granted	13.3	$	22.50
Settled	(13.5)	$	19.31
Forfeited or expired	(2.7)	$	27.23
Units outstanding at December 31, 2020(a)	38.6	$	19.84	0.9

__________

(a) Includes the target amount of PSUs.

Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The following tables summarize key financial information by segment:


	At and For the Year Ended December 31, 2020
	GMNA		GMI		Corporate		Eliminations		Total Automotive		Cruise		GM Financial		Eliminations/Reclassifications		Total
Net sales and revenue	$	96,733	$	11,586	$	350			$	108,669	$	103	$	13,831	$	(118)	$	122,485
Earnings (loss) before interest and taxes-adjusted	$	9,071	$	(528)	$	(634)			$	7,909	$	(887)	$	2,702	$	(14)	$	9,710
Adjustments(a)	$	(99)	$	(683)	$	130			$	(652)	$	—	$	—	$	—	(652)
Automotive interest income																	241
Automotive interest expense																	(1,098)
Net (loss) attributable to noncontrolling interests																	(106)
Income before income taxes																	8,095
Income tax expense																	(1,774)
Income from continuing operations																	6,321
Loss from discontinued operations, net of tax																	—
Net loss attributable to noncontrolling interests																	106
Net income attributable to stockholders																	$	6,427
Equity in net assets of nonconsolidated affiliates	$	242	$	6,583	$	—	$	—	$	6,825	$	—	$	1,581	$	—	$	8,406
Goodwill and intangibles	$	2,346	$	806	$	—	$	—	$	3,152	$	735	$	1,343	$	—	$	5,230
Total assets	$	114,137	$	23,019	$	39,933	$	(57,464)	$	119,625	$	3,625	$	113,410	$	(1,466)	$	235,194
Expenditures for property	$	4,501	$	729	$	21	$	—	$	5,251	$	15	$	34	$	—	$	5,300
Depreciation and amortization	$	4,739	$	624	$	25	$	—	$	5,388	$	43	$	7,245	$	—	$	12,676
Impairment charges	$	20	$	99	$	—	$	—	$	119	$	20	$	—	$	—	$	139
Equity income	$	17	$	510	$	—	$	—	$	527	$	—	$	147	$	—	$	674

__________


	At and For the Year Ended December 31, 2019
	GMNA		GMI		Corporate		Eliminations		Total Automotive		Cruise		GM Financial		Eliminations/Reclassifications		Total
Net sales and revenue	$	106,366	$	16,111	$	220			$	122,697	$	100	$	14,554	$	(114)	$	137,237
Earnings (loss) before interest and taxes-adjusted	$	8,204	$	(202)	$	(691)			$	7,311	$	(1,004)	$	2,104	$	(18)	$	8,393
Adjustments(a)	$	(1,618)	$	1,081	$	(2)			$	(539)	$	—	$	—	$	—	(539)
Automotive interest income																	429
Automotive interest expense																	(782)
Net (loss) attributable to noncontrolling interests																	(65)
Income before income taxes																	7,436
Income tax expense																	(769)
Income from continuing operations																	6,667
Loss from discontinued operations, net of tax																	—
Net loss attributable to noncontrolling interests																	65
Net income attributable to stockholders																	$	6,732
Equity in net assets of nonconsolidated affiliates	$	84	$	7,023	$	—	$	—	$	7,107	$	—	$	1,455	$	—	$	8,562
Goodwill and intangibles	$	2,459	$	888	$	1	$	—	$	3,348	$	634	$	1,355	$	—	$	5,337
Total assets	$	109,290	$	24,969	$	32,365	$	(50,244)	$	116,380	$	4,230	$	108,881	$	(1,454)	$	228,037
Expenditures for property	$	6,305	$	1,096	$	84	$	—	$	7,485	$	60	$	47	$	—	$	7,592
Depreciation and amortization	$	6,112	$	533	$	46	$	(2)	$	6,689	$	21	$	7,350	$	—	$	14,060
Impairment charges	$	15	$	7	$	—	$	—	$	22	$	36	$	—	$	—	$	58
Equity income (loss)	$	8	$	1,123	$	(29)	$	—	$	1,102	$	—	$	166	$	—	$	1,268

__________


	At and For the Year Ended December 31, 2018
	GMNA		GMI		Corporate		Eliminations		Total Automotive		Cruise		GM Financial		Eliminations		Total
Net sales and revenue	$	113,792	$	19,148	$	203			$	133,143	$	—	$	14,016	$	(110)	$	147,049
Earnings (loss) before interest and taxes-adjusted	$	10,769	$	423	$	(570)			$	10,622	$	(728)	$	1,893	$	(4)	$	11,783
Adjustments(a)	$	(1,236)	$	(1,212)	$	(457)			$	(2,905)	$	—	$	—	$	—	(2,905)
Automotive interest income																	335
Automotive interest expense																	(655)
Net (loss) attributable to noncontrolling interests																	(9)
Income before income taxes																	8,549
Income tax expense																	(474)
Income from continuing operations																	8,075
Loss from discontinued operations, net of tax																	(70)
Net loss attributable to noncontrolling interests																	9
Net loss attributable to stockholders																	$	8,014
Equity in net assets of nonconsolidated affiliates	$	75	$	7,761	$	24	$	—	$	7,860	$	—	$	1,355	$	—	$	9,215
Goodwill and intangibles	$	2,623	$	928	$	1	$	—	$	3,552	$	671	$	1,356	$	—	$	5,579
Total assets	$	109,763	$	24,911	$	31,694	$	(50,690)	$	115,678	$	3,195	$	109,953	$	(1,487)	$	227,339
Expenditures for property	$	7,784	$	883	$	21	$	(2)	$	8,686	$	15	$	60	$	—	$	8,761
Depreciation and amortization	$	4,995	$	562	$	50	$	(3)	$	5,604	$	7	$	7,531	$	—	$	13,142
Impairment charges	$	55	$	466	$	6	$	—	$	527	$	—	$	—	$	—	$	527
Equity income	$	8	$	1,972	$	—	$	—	$	1,980	$	—	$	183	$	—	$	2,163

__________

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

The following table summarizes information concerning principal geographic areas:


	At and For the Years Ended December 31,
	2020				2019				2018
	Net Sales and Revenue		Long-Lived Assets		Net Sales and Revenue		Long-Lived Assets		Net Sales and Revenue		Long-Lived Assets
Automotive
U.S.	$	89,204	$	24,932	$	97,887	$	25,401	$	104,413	$	25,625
Non-U.S.	19,469		12,516		24,810		13,190		28,632		13,263
GM Financial
U.S.	12,227		36,773		12,727		39,509		12,169		41,334
Non-U.S.	1,585		3,230		1,813		2,772		1,835		2,476
Total consolidated	$	122,485	$	77,451	$	137,237	$	80,872	$	147,049	$	82,698

Supplemental Information for the Consolidated Statements of Cash Flows (Tables)

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

The following table summarizes the sources (uses) of cash provided by Change in other operating assets and liabilities and Cash paid for income taxes and interest:


Change in other operating assets and liabilities	Years Ended December 31,
	2020		2019		2018
Accounts receivable	$	(1,341)	$	(563)	$	492
Wholesale receivables funded by GM Financial, net	2,744		663		(2,606)
Inventories	(104)		(761)		399
Automotive equipment on operating leases	53		274		748
Change in other assets	68		(1,550)		(529)
Accounts payable	42		(492)		(537)
Income taxes payable	130		213		(75)
Accrued and other liabilities	(1,991)		(1,573)		732
Total	$	(399)	$	(3,789)	$	(1,376)

Cash paid for income taxes and interest
Cash paid for income taxes, net	$	719	$	689	$	660
Cash paid for interest (net of amounts capitalized) – Automotive	$	1,011	$	739	$	656
Cash paid for interest (net of amounts capitalized) – GM Financial	2,947		3,475		2,941
Total cash paid for interest (net of amounts capitalized)	$	3,958	$	4,214	$	3,597

Significant Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue Recognition [Abstract]
Revenue recognition term of separate and bundled services	7 years
Cash Equivalents [Abstract]
Maximum maturity period for highly liquid securities	90 days
Pension and Other Postretirement Plans [Abstract]
Percentage recognized as pension expense in the first year	60.00%
Percentage of pension expense recognized in each of the next four years	10.00%
Subsequent period over which pension expense adjustment is amortized	4 years
Percentage of non-US pension benefit obligations related to Canada, United Kingdom and Germany	93.00%
Income Taxes [Abstract]
Number of years used for valuation allowance methodology	3 years
Minimum threshold to recognize the tax benefit for uncertain tax positions	50.00%
Foreign Currency Transactions and Translation [Abstract]
Foreign currency remeasurement and transaction (gains) losses	$ 203	$ (85)	$ 168
Recently Adopted Accounting Standards and Accounting Standards Not Yet Adopted [Abstract]
Stockholders' equity	(49,677)	(45,957)	(42,777)	$ (36,200)
Cumulative Effect, Period of Adoption, Adjustment
Recently Adopted Accounting Standards and Accounting Standards Not Yet Adopted [Abstract]
Stockholders' equity		660		$ 1,144
Automotive Selling, General and Administrative Expense
Advertising and Promotion Expenditures [Abstract]
Advertising and promotion expenditures	2,700	3,700	4,000
Automotive Cost of Sales
Research and Development Expenditures [Abstract]
Research and development expenditures	$ 6,200	6,800	$ 7,800
GM Financial \| Minimum \| Vehicles
Equipment on Operating Leases, net [Abstract]
Term of leasing arrangements	2 years
GM Financial \| Maximum \| Vehicles
Equipment on Operating Leases, net [Abstract]
Term of leasing arrangements	5 years
GM Financial \| Retail Finance Receivables
Revenue Recognition [Abstract]
Period past due threshold for suspending accrual of finance charge income	60 days
GM Financial \| Commercial Finance Receivables
Revenue Recognition [Abstract]
Period past due threshold for suspending accrual of finance charge income	90 days
Automotive \| Vehicles
Equipment on Operating Leases, net [Abstract]
Term of leasing arrangements	7 months
Financing Receivable, Allowance for Credit Loss \| Accounting Standards Update 2016-13 \| GM Financial \| Cumulative Effect, Period of Adoption, Adjustment
Recently Adopted Accounting Standards and Accounting Standards Not Yet Adopted [Abstract]
Stockholders' equity		801
Retained Earnings \| Accounting Standards Update 2016-13 \| Cumulative Effect, Period of Adoption, Adjustment
Recently Adopted Accounting Standards and Accounting Standards Not Yet Adopted [Abstract]
Stockholders' equity		660
Retained Earnings \| Accounting Standards Update 2016-13 \| GM Financial \| Cumulative Effect, Period of Adoption, Adjustment
Recently Adopted Accounting Standards and Accounting Standards Not Yet Adopted [Abstract]
Stockholders' equity		$ 643

Revenue - Disaggregation (Details) - USD ($) $ in Millions	12 Months Ended
Revenue - Disaggregation (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	$ 108,673	$ 122,697	$ 133,045
Leased vehicle income	9,530	10,032	9,963
Finance charge income	3,995	4,064	3,621
Other income	287	444	420
GM Financial net sales and revenue	13,812	14,540	14,004
Net sales and revenue	122,485	137,237	147,049
Operating Segments \| Cruise
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	103	100
Net sales and revenue	103	100	0
Operating Segments \| GM Financial
Disaggregation of Revenue [Line Items]
Leased vehicle income	9,530	10,032	9,963
Finance charge income	3,996	4,071	3,629
Other income	305	451	424
GM Financial net sales and revenue	13,831	14,554	14,016
Net sales and revenue	13,831	14,554	14,016
Eliminations/ Reclassifications
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	(99)	(100)	(98)
Leased vehicle income	0	0	0
Finance charge income	(1)	(7)	(8)
Other income	(18)	(7)	(4)
GM Financial net sales and revenue	(19)	(14)	(12)
Net sales and revenue	(118)	(114)	(110)
Automotive
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	108,673	122,697	133,045
Automotive \| Operating Segments
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	108,669	122,697	133,143
Net sales and revenue	108,669	122,697	133,143
Automotive \| Operating Segments \| GMNA
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	96,733	106,366	113,792
Net sales and revenue	96,733	106,366	113,792
Automotive \| Operating Segments \| GMI
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	11,586	16,111	19,148
Net sales and revenue	11,586	16,111	19,148
Automotive \| Corporate
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	350	220	203
Net sales and revenue	350	220	203
Vehicle, parts and accessories
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	103,343	116,277	125,155
Vehicle, parts and accessories \| Eliminations/ Reclassifications
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	0	0	(62)
Vehicle, parts and accessories \| Automotive \| Operating Segments
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	103,343	116,277	125,217
Vehicle, parts and accessories \| Automotive \| Operating Segments \| GMNA
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	92,749	101,346	107,217
Vehicle, parts and accessories \| Automotive \| Operating Segments \| GMI
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	10,593	14,931	17,980
Vehicle, parts and accessories \| Automotive \| Corporate
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	1	0	20
Used vehicles
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	1,010	2,019	3,354
Used vehicles \| Eliminations/ Reclassifications
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	0	0	(36)
Used vehicles \| Automotive \| Operating Segments
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	1,010	2,019	3,390
Used vehicles \| Automotive \| Operating Segments \| GMNA
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	875	1,896	3,215
Used vehicles \| Automotive \| Operating Segments \| GMI
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	115	123	175
Used vehicles \| Automotive \| Corporate
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	20	0	0
Services and other
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	4,320	4,401	4,536
Services and other \| Operating Segments \| Cruise
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	103	100
Services and other \| Eliminations/ Reclassifications
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	(99)	(100)	0
Services and other \| Automotive \| Operating Segments
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	4,316	4,401	4,536
Services and other \| Automotive \| Operating Segments \| GMNA
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	3,109	3,124	3,360
Services and other \| Automotive \| Operating Segments \| GMI
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	878	1,057	993
Services and other \| Automotive \| Corporate
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	$ 329	$ 220	$ 183

Revenue - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Revenue - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Contract liabilities	$ 2,400	$ 2,200
Deferred revenue recognized	1,100	$ 1,500
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue expected to be recognized	$ 1,200
Performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue expected to be recognized	$ 503
Performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue expected to be recognized	$ 759
Performance obligation, expected timing of satisfaction, period

Marketable and Other Securities - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Marketable Securities [Line Items]
Sales proceeds from investments classified as available-for-sale and sold prior to maturity	$ 1,900	$ 4,500	$ 4,300
Lyft, Inc. \| Interest Income and Other Non-Operating Income
Marketable Securities [Line Items]
Unrealized gain (loss) on securities			$ 142

Marketable and Other Securities - Fair Value of Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Marketable Securities [Line Items]
Total cash and cash equivalents	$ 19,992	$ 19,069
Cash and cash equivalents	269	292
Total restricted cash	3,125	3,874
Due in one year or less	12,533
Due between one and five years	2,778
Total available-for-sale debt securities with contractual maturities	15,311
GM Korea
Marketable Securities [Line Items]
Cash and time deposits	0	248
Cruise
Marketable Securities [Line Items]
Total cash and cash equivalents	761	2,300
Cash and cash equivalents
Marketable Securities [Line Items]
Cash and time deposits	8,010	6,828
Total available-for-sale debt securities with contractual maturities	6,897	9,470
Cash and cash equivalents \| Level 2 \| U.S. government and agencies
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	1,370	1,484
Cash and cash equivalents \| Level 2 \| Corporate debt
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	3,476	5,863
Cash and cash equivalents \| Level 2 \| Sovereign debt
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	2,051	2,123
Cash and cash equivalents \| Level 1
Marketable Securities [Line Items]
Money market funds	5,085	2,771
Marketable debt securities
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	9,046	4,174
Marketable debt securities \| Cruise
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	943	266
Marketable debt securities \| Level 2 \| U.S. government and agencies
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	1,771	226
Marketable debt securities \| Level 2 \| Corporate debt
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	3,630	2,932
Marketable debt securities \| Level 2 \| Sovereign debt
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	3,013	335
Marketable debt securities \| Level 2 \| Mortgage and asset-backed
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	632	681
Restricted cash - cash equivalents \| Level 1
Marketable Securities [Line Items]
Money market funds	$ 2,856	$ 3,582

Marketable and Other Securities - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Marketable Securities [Abstract]
Cash and cash equivalents	$ 19,992	$ 19,069
Restricted cash included in Other current assets	2,581	3,352
Restricted cash included in Other assets	544	522
Total	$ 23,117	$ 22,943	$ 23,496	$ 17,848

GM Financial Receivables and Transactions - Summary of Finance Receivables (Details) - GM Financial - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finance Receivables [Line Items]
GM Financial receivables	$ 59,970	$ 53,900
Less: allowance for loan losses	(1,978)	(944)	$ (911)	$ (942)
GM Financial receivables, net	57,992	52,956
Commercial Finance Receivables
Finance Receivables [Line Items]
GM Financial receivables	8,682	11,671
Less: allowance for loan losses	(63)	(78)
GM Financial receivables, net	8,619	11,593
Dealer cash management balances	1,400	1,200
Retail Finance Receivables
Finance Receivables [Line Items]
GM Financial receivables	51,288	42,229
Less: allowance for loan losses	(1,915)	(866)
GM Financial receivables, net	49,373	41,363
Level 2
Finance Receivables [Line Items]
Fair value of GM Financial receivables	8,619	11,593
Level 3
Finance Receivables [Line Items]
Fair value of GM Financial receivables	$ 51,645	$ 41,973

GM Financial Receivables and Transactions - Allowance for Loan Losses (Details) - GM Financial - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses at beginning of period	$ 944	$ 911	$ 942
Provision for loan losses	881	726	642
Charge-offs	(1,169)	(1,246)	(1,199)
Recoveries	542	551	536
Effect of foreign currency	(21)	2	(10)
Allowance for loan losses at end of period	1,978	944	$ 911
Cumulative Effect, Period of Adoption, Adjustment \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses at beginning of period	$ 801
Allowance for loan losses at end of period		$ 801

GM Financial Receivables and Transactions - Credit Risk Profile by FICO Score (Details) - GM Financial - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
GM Financial receivables, net of fees	$ 59,970	$ 53,900
Retail Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
2020	26,183
2019	12,050
2018	7,463
2017	3,693
2016	1,390
Prior	509
GM Financial receivables, net of fees	$ 51,288	$ 42,229
Percent	100.00%	100.00%
Retail Finance Receivables \| Prime – FICO score 680 and greater
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 18,685
2019	7,033
2018	4,491
2017	1,917
2016	555
Prior	119
GM Financial receivables, net of fees	$ 32,800	$ 25,400
Percent	64.00%	60.10%
Retail Finance Receivables \| Near-prime – FICO score 620 to 679
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 3,695
2019	2,097
2018	1,232
2017	603
2016	225
Prior	83
GM Financial receivables, net of fees	$ 7,935	$ 6,862
Percent	15.40%	16.30%
Retail Finance Receivables \| Sub-prime – FICO score less than 620
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 3,803
2019	2,920
2018	1,740
2017	1,173
2016	610
Prior	307
GM Financial receivables, net of fees	$ 10,553	$ 9,967
Percent	20.60%	23.60%

GM Financial Receivables and Transactions - Retail Finance Receivables Delinquencies (Details) - Retail Finance Receivables - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
TDR's	$ 2,200
Nonaccrual loans	301
GM Financial
Financing Receivable, Past Due [Line Items]
Retail finance receivables, nonaccrual status	714	$ 875
2020	26,183
2019	12,050
2018	7,463
2017	3,693
2016	1,390
Prior	$ 509
Total		$ 1,940
Percent	100.00%	100.00%
Percent		4.60%
Percent	100.00%
GM Financial \| Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2020	$ 289
2019	459
2018	332
2017	239
2016	141
Prior	88
Total	$ 1,548
Percent	3.00%
0-to-30 days \| GM Financial \| Performing Financial Instruments
Financing Receivable, Past Due [Line Items]
2020	$ 25,894
2019	11,591
2018	7,131
2017	3,454
2016	1,249
Prior	421
Total, Not Past Due	$ 49,740
Percent	97.00%
31-to-60 days \| GM Financial
Financing Receivable, Past Due [Line Items]
Total		$ 1,354
Percent		3.20%
31-to-60 days \| GM Financial \| Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2020	$ 210
2019	325
2018	235
2017	170
2016	102
Prior	61
Total	$ 1,103
Percent	2.10%
Greater-than-60 days \| GM Financial
Financing Receivable, Past Due [Line Items]
Total		$ 542
Percent		1.30%
Greater-than-60 days \| GM Financial \| Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2020	$ 72
2019	123
2018	90
2017	64
2016	37
Prior	26
Total	$ 412
Percent	0.80%
Finance receivables more than 30 days delinquent \| GM Financial
Financing Receivable, Past Due [Line Items]
Total		$ 1,896
Percent		4.50%
Finance receivables more than 30 days delinquent \| GM Financial \| Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2020	$ 282
2019	448
2018	325
2017	234
2016	139
Prior	87
Total	$ 1,515
Percent	2.90%
In repossession \| GM Financial
Financing Receivable, Past Due [Line Items]
Total		$ 44
Percent		0.10%
In repossession \| GM Financial \| Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2020	$ 7
2019	11
2018	7
2017	5
2016	2
Prior	1
Total	$ 33
Percent	0.10%

GM Financial Receivables and Transactions - Commercial Finance Receivables Credit Quality Indicators (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
GM Financial receivables, net of fees	$ 59,970	$ 53,900
Commercial Finance Receivables \| Floorplan advances
Financing Receivable, Credit Quality Indicator [Line Items]
Percent of Contractual Amount Due	97.00%
Commercial Finance Receivables \| GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 7,662
2020	512
2019	185
2018	94
2017	100
2016	72
Prior	57
GM Financial receivables, net of fees	$ 8,682	$ 11,671
Percent	100.00%
Commercial Finance Receivables \| GM Financial \| I
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 6,968
2020	510
2019	159
2018	63
2017	95
2016	43
Prior	19
GM Financial receivables, net of fees	$ 7,857
Percent	90.50%
Commercial Finance Receivables \| GM Financial \| II
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 491
2020	2
2019	18
2018	2
2017	3
2016	18
Prior	34
GM Financial receivables, net of fees	$ 568
Percent	6.50%
Commercial Finance Receivables \| GM Financial \| III
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 203
2020	0
2019	8
2018	29
2017	2
2016	11
Prior	0
GM Financial receivables, net of fees	$ 253
Percent	2.90%
Commercial Finance Receivables \| GM Financial \| IV
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 0
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	4
GM Financial receivables, net of fees	$ 4
Percent	0.10%

GM Financial Receivables and Transactions - Intercompany Transactions (Details) - GM Financial - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transactions [Line Items]
Financing receivable, net	$ 57,992	$ 52,956
Common stock dividends declared	800	400	$ 375
Commercial Portfolio Segment
Related Party Transactions [Line Items]
Financing receivable, net	8,619	11,593
Eliminations/ Reclassifications
Related Party Transactions [Line Items]
Subvention receivable	642	676
Interest subvention earned on finance receivables	679	588	554
Leased vehicle subvention earned	3,042	3,273	3,274
Cash payments to GM Financial	3,900	4,100	$ 3,800
Eliminations/ Reclassifications \| Commercial Portfolio Segment
Related Party Transactions [Line Items]
Financing receivable, net	398	478
Commercial loan funding payable	$ 23	$ 74

Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Total productive material, supplies and work in process	$ 5,117	$ 4,713
Finished product, including service parts	5,118	5,685
Total inventories	$ 10,235	$ 10,398

Equipment on Operating Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property Subject to or Available for Operating Lease [Line Items]
Residual value of leased assets	$ 29,200
Vehicles
Property Subject to or Available for Operating Lease [Line Items]
Equipment on operating leases	50,000	$ 53,081
Less: accumulated depreciation	(10,181)	(10,989)
Equipment on operating leases, net	39,819	42,092
Depreciation expense	7,200	$ 7,300	$ 7,500
Vehicles \| GM Financial
Lease receipts under operating leases
2021	6,142
2022	3,783
2023	1,441
2024	112
2025	2
Thereafter	0
Total	$ 11,480

Equity In Net Assets Of Nonconsolidated Affiliates (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) joint_venture	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Schedule of Equity Method Investments [Line Items]
Equity income	$ 674	$ 1,268	$ 2,163
Equity in net assets of nonconsolidated affiliates	8,406	8,562	9,215
Basis Difference	$ 4,200	4,200
Number of joint ventures engaged in production, import and sale of products \| joint_venture	4
SGM
Schedule of Equity Method Investments [Line Items]
Number of interests in other joint ventures \| joint_venture	3
Automotive China
Schedule of Equity Method Investments [Line Items]
Equity income	$ 512	1,132	1,981
Equity in net assets of nonconsolidated affiliates	6,599	7,044
Other joint ventures
Schedule of Equity Method Investments [Line Items]
Equity income	162	136	$ 182
Equity in net assets of nonconsolidated affiliates	$ 1,807	$ 1,518
SGM
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%	50.00%
SGM \| SAIC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%
PATAC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%	50.00%
SGMS
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	49.00%	49.00%
SGMW
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	44.00%	44.00%
Shanghai OnStar
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	40.00%	40.00%
Shanghai OnStar \| SGM
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	20.00%
SGM Norsom
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	25.00%	25.00%
SGM Norsom \| SGM
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%
SGM Norsom \| SAIC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	25.00%
SGM DY
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	25.00%	25.00%
SGM DY \| SGM
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%
SGM DY \| SAIC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	25.00%
SGM DYPT
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	25.00%	25.00%
SGM DYPT \| SGM
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%
SGM DYPT \| SAIC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	25.00%
SAIC-GMAC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	35.00%	35.00%
SAIC-GMAC \| SGM
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	20.00%
SAIC-GMAC \| Shanghai Automotive Group Finance Company Ltd.
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	45.00%
SAIC-GMF Leasing Co., Ltd.
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	35.00%	35.00%
SAIC-GMF Leasing Co., Ltd. \| SGM
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	20.00%
SAIC-GMF Leasing Co., Ltd. \| SAIC Financial Holdings Company
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	45.00%

Equity In Net Assets Of Nonconsolidated Affiliates - Summarized Financial Data of NCAs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Current assets	$ 80,924	$ 74,992
Non-current assets	154,270	153,045
Total Assets	235,194	228,037	$ 227,339
Current liabilities	79,910	84,905
Non-current liabilities	105,607	97,175
Total Liabilities	185,517	182,080
Noncontrolling interests	4,647	4,165
Net sales and revenue	122,485	137,237	147,049
Net income	6,321	6,667	8,005
Nonconsolidated Affiliates
Schedule of Equity Method Investments [Line Items]
Current assets	34,448	27,354
Non-current assets	23,509	21,164
Total Assets	57,957	48,518
Current liabilities	40,441	32,844
Non-current liabilities	7,817	5,985
Total Liabilities	48,258	38,829
Noncontrolling interests	825	848
Net sales and revenue	40,586	40,938	52,037
Net income	1,675	2,735	4,528
Nonconsolidated Affiliates \| Automotive China JVs
Schedule of Equity Method Investments [Line Items]
Current assets	17,604	14,035
Non-current assets	14,875	14,484
Total Assets	32,479	28,519
Current liabilities	25,633	21,256
Non-current liabilities	1,163	968
Total Liabilities	26,796	22,224
Noncontrolling interests	824	847
Net sales and revenue	38,736	39,123	50,316
Net income	1,239	2,258	3,992
Nonconsolidated Affiliates \| Other joint ventures
Schedule of Equity Method Investments [Line Items]
Current assets	16,844	13,319
Non-current assets	8,634	6,680
Total Assets	25,478	19,999
Current liabilities	14,808	11,588
Non-current liabilities	6,654	5,017
Total Liabilities	21,462	16,605
Noncontrolling interests	1	1
Net sales and revenue	1,850	1,815	1,721
Net income	$ 436	$ 477	$ 536

Equity In Net Assets Of Nonconsolidated Affiliates - Transactions with NCAs (Details) - Nonconsolidated Affiliates - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transactions [Line Items]
Automotive sales and revenue	$ 235	$ 199	$ 406
Automotive purchases, net	165	1,065	1,155
Dividends received	1,198	1,852	2,022
Operating cash flows	1,473	913	$ 657
Accounts and notes receivable, net	954	1,007
Accounts payable	494	369
Undistributed earnings	$ 1,594	$ 2,118

Property (Details) - USD ($) $ in Millions	12 Months Ended
Property (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 65,455	$ 67,449
Less: accumulated depreciation	(27,823)	(28,699)
Total property, net	37,632	38,750
Depreciation, Amortization and Impairment [Abstract]
Depreciation and amortization expense	12,676	14,060	$ 13,142
Property, Plant and Equipment
Capitalized Interest and Software [Abstract]
Capitalized software	1,300	1,300
Depreciation, Amortization and Impairment [Abstract]
Depreciation and amortization expense	5,354	6,541	5,347
Impairment charges	86	7	466
Capitalized software amortization expense	457	452	$ 424
Land
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	1,339	1,302
Buildings and Improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 9,671	9,705
Buildings and Improvements \| Minimum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	5 years
Buildings and Improvements \| Maximum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	40 years
Machinery and Equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 30,013	29,814
Machinery and Equipment \| Minimum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	3 years
Machinery and Equipment \| Maximum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	27 years
Special Tools
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 20,851	23,586
Special Tools \| Minimum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	1 year
Special Tools \| Maximum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	13 years
Construction in Progress
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 3,581	$ 3,042

Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 1,900	$ 1,900
GM Financial
Goodwill [Line Items]
Goodwill	1,300	1,400
Cruise
Goodwill [Line Items]
Goodwill	$ 567	$ 504

Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 6,043	$ 5,998
Accumulated Amortization	2,723	2,520
Net Carrying Amount	3,320	3,478
Amortization expense	144	202	$ 247
Estimated amortization expense, 2021	160
Estimated amortization expense, 2022	160
Estimated amortization expense, 2023	160
Estimated amortization expense, 2024	160
Estimated amortization expense, 2025	160
Technology and intellectual property
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	762	734
Accumulated Amortization	542	533
Net Carrying Amount	220	201
Brands
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,300	4,298
Accumulated Amortization	1,444	1,285
Net Carrying Amount	2,856	3,013
Dealer network, customer relationships and other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	981	966
Accumulated Amortization	737	702
Net Carrying Amount	$ 244	$ 264

Variable Interest Entities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Consolidated [Abstract]
Property, net (Note 9)	$ 37,632	$ 38,750
Nonconsolidated VIE
Consolidated [Abstract]
Maximum loss exposure amount	1,200
Nonconsolidated VIE \| Capital Commitments \| Ultium Cells LLC
Consolidated [Abstract]
Committed capital contributions	776
GM Financial
Consolidated [Abstract]
GM Financial receivables, net (Note 5; Note 11 at VIEs)	26,209	26,601
GM Financial receivables, net of fees - non-current	31,783	26,355
GM Financial short-term debt and current portion of long-term debt	35,637	35,503
GM Financial long-term debt	56,788	53,435
GM Financial \| Variable Interest Entity, Primary Beneficiary
Consolidated [Abstract]
Restricted cash - current	2,190	2,202
Restricted cash - non-current	449	441
GM Financial receivables, net (Note 5; Note 11 at VIEs)	17,211	19,081
GM Financial receivables, net of fees - non-current	15,107	15,921
GM Financial short-term debt and current portion of long-term debt	20,450	23,952
GM Financial long-term debt	18,974	15,819
Equipment Leased to Other Party \| GM Financial \| Variable Interest Entity, Primary Beneficiary
Consolidated [Abstract]
Property, net (Note 9)	$ 16,322	$ 14,464

Accrued and Other Liabilities - Accrued and Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Accrued liabilities
Dealer and customer allowances, claims and discounts	$ 7,300	$ 10,402
Deferred revenue	3,132	3,234
Product warranty and related liabilities	3,048	2,987
Payrolls and employee benefits excluding postemployment benefits	1,864	1,969
Other	7,725	7,895
Total accrued liabilities	23,069	26,487
Other liabilities
Deferred revenue	2,715	2,962
Product warranty and related liabilities	5,193	4,811
Operating lease liabilities	969	1,010
Employee benefits excluding postemployment benefits	822	704
Postemployment benefits including facility idling reserves	739	633
Other	3,009	3,026
Total other liabilities	$ 13,447	$ 13,146
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent

Accrued and Other Liabilities - Product Warranty and Related Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Product Warranty and Related Liabilities [Roll Forward]
Warranty balance at beginning of period		$ 7,798	$ 7,590	$ 8,332
Warranties issued and assumed in period – recall campaigns		1,628	745	665
Warranties issued and assumed in period – product warranty		1,773	2,001	2,143
Payments		(2,986)	(3,012)	(2,903)
Adjustments to pre-existing warranties		41	455	(464)
Effect of foreign currency and other		(12)	19	(183)
Warranty balance at end of period	$ 8,242	$ 8,242	$ 7,798	$ 7,590
Takata Passenger-side Airbags
Loss Contingencies [Line Items]
Increase in product warranty accrual	$ 1,100

Debt - Automotive and GM Financial Debt (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Automotive
Debt Instrument [Line Items]
Finance lease liabilities	$ 237	$ 310
Carrying Amount	17,469	14,386
Finance lease liabilities, Fair Value	256	516
Fair Value	21,576	15,928
Available under credit facility agreements(b)	$ 18,222	$ 17,285
Weighted-average interest rate on outstanding short-term debt	3.80%	4.90%
Weighted-average interest rate on outstanding long-term debt	5.60%	5.40%
Net discount and debt issuance costs	$ 540	$ 540
Automotive \| Secured Debt
Debt Instrument [Line Items]
Total debt	303	167
Fair Value	332	165
Automotive \| Unsecured Debt
Debt Instrument [Line Items]
Total debt	16,929	13,909
Fair Value	20,988	15,247
Automotive \| Level 1
Debt Instrument [Line Items]
Fair Value	19,826	13,628
Automotive \| Level 2
Debt Instrument [Line Items]
Fair Value	1,750	2,300
GM Financial
Debt Instrument [Line Items]
Total debt	92,425	88,938
Fair Value	94,948	90,399
GM Financial \| Secured Debt
Debt Instrument [Line Items]
Total debt	39,982	39,959
Fair Value	40,380	40,160
GM Financial \| Unsecured Debt
Debt Instrument [Line Items]
Total debt	52,443	48,979
Fair Value	54,568	50,239
GM Financial \| Level 2
Debt Instrument [Line Items]
Fair Value	92,922	88,481
GM Financial \| Level 3
Debt Instrument [Line Items]
Fair Value	$ 2,026	$ 1,918

Debt - Secured Debt and Unsecured Debt (Details) $ in Millions, $ in Millions	1 Months Ended				12 Months Ended
	Aug. 31, 2020 USD ($)	May 31, 2020 USD ($)	Apr. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)	Jan. 31, 2021 USD ($)	Jan. 31, 2021 CAD ($)	Dec. 31, 2019
Automotive
Debt Instrument [Line Items]
Weighted-average interest rate on outstanding long-term debt					5.60%			5.40%
Revolving Credit Facility \| GM Financial \| Unsecured Debt
Debt Instrument [Line Items]
Weighted-average interest rate					2.47%
Maximum \| Revolving Credit Facility \| GM Financial \| Unsecured Debt
Debt Instrument [Line Items]
Debt term					4 years
Line of Credit \| Unsecured Debt
Debt Instrument [Line Items]
Proceeds borrowed				$ 2,000
Debt term		3 years	3 years
Aggregate borrowing capacity		$ 2,000	$ 3,000
Dividend restriction covenant, amount outstanding					$ 5,000
Line of Credit \| Unsecured Debt \| Three Year Revolving Credit Facility April 2021
Debt Instrument [Line Items]
Proceeds borrowed				3,400
Debt term			3 years		3 years
Aggregate borrowing capacity			$ 4,000		$ 4,000
Line of Credit \| Unsecured Debt \| Five Year Revolving Credit Facility Due 2023
Debt Instrument [Line Items]
Proceeds borrowed				$ 10,500
Debt term					5 years
Aggregate borrowing capacity					$ 10,500
Line of Credit \| Unsecured Debt \| Three Year Revolving Credit Facility April 2022
Debt Instrument [Line Items]
Aggregate borrowing capacity			$ 3,600
Line of Credit \| GM Financial \| Unsecured Debt \| Two Billion Dollar Revolving Credit Facility
Debt Instrument [Line Items]
Debt term		364 days	364 days		364 days
Aggregate borrowing capacity		$ 2,000	$ 2,000		$ 2,000
Line of Credit \| Revolving Credit Facility \| GM Financial \| Secured Debt
Debt Instrument [Line Items]
Increase to maximum borrowing capacity					21,100
Senior Notes \| Unsecured Debt
Debt Instrument [Line Items]
Amount of debt issued		$ 4,000
Weighted-average interest rate		6.11%
Senior Notes \| Unsecured Debt \| Floating Rate Notes
Debt Instrument [Line Items]
Repayments of debt	$ 500
Senior Notes \| GM Financial \| Senior Notes Due 2031 \| Subsequent Event
Debt Instrument [Line Items]
Amount of debt issued						$ 2,500
Weighted-average interest rate						1.69%	1.69%
Senior Notes \| GM Financial \| CAD Senior Notes Due 2026 \| Subsequent Event
Debt Instrument [Line Items]
Amount of debt issued							$ 500
Weighted-average interest rate						1.75%	1.75%
Senior Notes \| GM Financial \| Unsecured Debt
Debt Instrument [Line Items]
Amount of debt issued					$ 9,200
Weighted-average interest rate					2.93%
Weighted-average interest rate on outstanding long-term debt					3.25%
Notes Payable, Other Payables \| GM Financial \| Secured Debt \| Securitization notes payable
Debt Instrument [Line Items]
Amount of debt issued					$ 24,600
Weighted-average interest rate					1.17%
Weighted-average interest rate on outstanding long-term debt					1.89%

Debt - Interest Expense and LT Debt Maturities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total interest expense	$ 4,121	$ 4,423	$ 3,880
2021	37,018
2022	19,449
2023	17,860
2024	7,894
2025	9,187
Thereafter	18,616
Total	110,024
Automotive
Debt Instrument [Line Items]
Total interest expense	1,098	782	655
2021	1,276
2022	137
2023	2,593
2024	86
2025	2,578
Thereafter	11,339
Total	18,009
GM Financial
Debt Instrument [Line Items]
Financing interest expense	3,023	$ 3,641	$ 3,225
2021	35,742
2022	19,312
2023	15,267
2024	7,808
2025	6,609
Thereafter	7,277
Total	$ 92,015

Derivative Financial Instruments - Derivative Financial Instruments (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 16, 2021
Derivative [Line Items]
Outstanding warrants (in shares)			15.0
Automotive \| Not Designated as Hedges
Derivative [Line Items]
Derivative notional amount	$ 2,585	$ 5,926
Automotive \| Not Designated as Hedges \| Foreign Currency \| Fair Value Level 2
Derivative [Line Items]
Derivative notional amount	2,195	5,075
Automotive \| Not Designated as Hedges \| Commodity \| Fair Value Level 2
Derivative [Line Items]
Derivative notional amount	341	806
Automotive \| Not Designated as Hedges \| PSA Warrants \| Fair Value Level 2
Derivative [Line Items]
Derivative notional amount	49	45
Automotive \| Not Designated as Hedges \| Fair Value Hedges \| PSA Warrants \| Fair Value Level 2
Derivative [Line Items]
Fair Value of Assets	1,100	964
GM Financial
Derivative [Line Items]
Derivative notional amount	129,566	108,673
Fair Value of Assets	1,823	636
Fair Value of Liabilities	672	519
Collateral	728	210
GM Financial \| Designated as Hedges \| Cash Flow Hedges \| Interest Rate Swap \| Fair Value Level 2
Derivative [Line Items]
Derivative notional amount	921	590
Fair Value of Assets	0	0
Fair Value of Liabilities	27	6
GM Financial \| Designated as Hedges \| Cash Flow Hedges \| Foreign Currency Swaps \| Fair Value Level 2
Derivative [Line Items]
Derivative notional amount	5,626	4,429
Fair Value of Assets	278	40
Fair Value of Liabilities	47	119
GM Financial \| Designated as Hedges \| Fair Value Hedges \| Interest Rate Swap \| Fair Value Level 2
Derivative [Line Items]
Derivative notional amount	10,064	9,458
Fair Value of Assets	463	234
Fair Value of Liabilities	13	23
GM Financial \| Designated as Hedges \| Fair Value Hedges \| Foreign Currency Swaps \| Fair Value Level 2
Derivative [Line Items]
Derivative notional amount	1,958	1,796
Fair Value of Assets	128	22
Fair Value of Liabilities	9	71
GM Financial \| Not Designated as Hedges \| Interest Rate Contract \| Fair Value Level 2
Derivative [Line Items]
Derivative notional amount	110,997	92,400
Fair Value of Assets	954	340
Fair Value of Liabilities	576	300
PSA Group \| Subsequent Event
Derivative [Line Items]
Outstanding warrants (in shares)				39.7
PSA Group \| Nonoperating Income (Expense) \| Automotive \| Not Designated as Hedges
Derivative [Line Items]
Gain on derivative instruments	$ 139	$ 154	$ 116
Stellantis N.V. \| Subsequent Event
Derivative [Line Items]
Outstanding warrants (in shares)				69.2

Derivative Financial Instruments - Balance Sheet Location of Cumulative Basis Adjustments (Details) - Fair Value Hedges - GM Financial - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Carrying Amount of Hedged Items	$ 23,315	$ 20,397
Cumulative Amount of Fair Value Hedging Adjustments	(739)	(77)
Short-term Debt
Derivatives, Fair Value [Line Items]
Carrying Amount of Hedged Items	4,858	996
Cumulative Amount of Fair Value Hedging Adjustments	(69)	4
Long-term Debt
Derivatives, Fair Value [Line Items]
Carrying Amount of Hedged Items	18,457	19,401
Cumulative Amount of Fair Value Hedging Adjustments	(670)	$ (81)
Cumulative fair value adjustment on discontinued hedging relationships	$ 200

Pensions And Other Postretirement Benefits - Contributions and Plan Amendments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to defined contribution plans	$ 573	$ 537	$ 617
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Years of service	30 years
Employer contributions	$ 464	615	1,700
Pension Plan \| Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Period of time for which there are no mandatory contributions for qualified plans	5 years
Pension Plan \| U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 68	83	76
Pension Plan \| U.S. \| Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Estimated contributions in next fiscal year	70
Pension Plan \| U.S. \| Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Mandatory contributions over the next five years	0
Pension Plan \| Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	396	532	1,624
Estimated contributions in next fiscal year	500
Pension Plan \| Canada and United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Mandatory contributions over the next five years	366
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	387	370
Other Postretirement Benefits Plan \| U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	343	$ 326	325
Pension Plan and Other Postretirement Benefits Plan \| U.S.
Defined Benefit Plan Disclosure [Line Items]
Remeasurement decrease due to mortality assumptions	$ 686		$ 264

Pensions And Other Postretirement Benefits - Pensions and OPEB Obligations and Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Pension Plan
Change in plan assets
Employer contributions	$ 464	$ 615	$ 1,700
Other Postretirement Benefits Plan
Change in benefit obligations
Beginning benefit obligation	6,304	5,744
Service cost	19	17	20
Interest cost	173	220	195
Actuarial losses	551	641
Benefits paid	(408)	(395)
Foreign currency translation adjustments	(3)	54
Curtailments, settlements and other	20	23
Ending benefit obligation	6,656	6,304	5,744
Change in plan assets
Beginning fair value of plan assets	0	0
Actual return on plan assets	0	0
Employer contributions	387	370
Benefits paid	(408)	(395)
Foreign currency translation adjustments	0	0
Settlements and other	21	25
Ending fair value of plan assets	0	0	0
Ending funded status	(6,656)	(6,304)
Amounts recorded in the consolidated balance sheets
Non-current assets	0	0
Current liabilities	(379)	(369)
Non-current liabilities	(6,277)	(5,935)
Net amount recorded	(6,656)	(6,304)
Amounts recorded in Accumulated other comprehensive loss
Net actuarial loss	(1,823)	(1,364)
Net prior service (cost) credit	20	27
Total recorded in Accumulated other comprehensive loss	(1,803)	(1,337)
U.S. \| Pension Plan
Change in benefit obligations
Beginning benefit obligation	64,684	61,190
Service cost	177	179
Interest cost	1,716	2,264	2,050
Actuarial losses	4,757	6,444
Benefits paid	(4,600)	(4,753)
Foreign currency translation adjustments	0	0
Curtailments, settlements and other	(266)	(640)
Ending benefit obligation	66,468	64,684	61,190
Change in plan assets
Beginning fair value of plan assets	59,239	56,102
Actual return on plan assets	6,635	8,454
Employer contributions	68	83	76
Benefits paid	(4,600)	(4,753)
Foreign currency translation adjustments	0	0
Settlements and other	(265)	(647)
Ending fair value of plan assets	61,077	59,239	56,102
Ending funded status	(5,391)	(5,445)
Amounts recorded in the consolidated balance sheets
Non-current assets	0	0
Current liabilities	(66)	(68)
Non-current liabilities	(5,325)	(5,377)
Net amount recorded	(5,391)	(5,445)
Amounts recorded in Accumulated other comprehensive loss
Net actuarial loss	(3,256)	(1,980)
Net prior service (cost) credit	11	14
Total recorded in Accumulated other comprehensive loss	(3,245)	(1,966)
U.S. \| Other Postretirement Benefits Plan
Change in plan assets
Employer contributions	343	326	325
Non-U.S. \| Pension Plan
Change in benefit obligations
Beginning benefit obligation	21,398	19,904
Service cost	133	120
Interest cost	362	456	464
Actuarial losses	1,506	1,653
Benefits paid	(1,132)	(1,234)
Foreign currency translation adjustments	870	561
Curtailments, settlements and other	(2,330)	(62)
Ending benefit obligation	20,807	21,398	19,904
Change in plan assets
Beginning fair value of plan assets	14,961	13,528
Actual return on plan assets	1,573	1,669
Employer contributions	396	532	1,624
Benefits paid	(1,132)	(1,234)
Foreign currency translation adjustments	389	668
Settlements and other	(2,341)	(202)
Ending fair value of plan assets	13,846	14,961	$ 13,528
Ending funded status	(6,961)	(6,437)
Amounts recorded in the consolidated balance sheets
Non-current assets	980	698
Current liabilities	(364)	(342)
Non-current liabilities	(7,577)	(6,793)
Net amount recorded	(6,961)	(6,437)
Amounts recorded in Accumulated other comprehensive loss
Net actuarial loss	(5,123)	(4,688)
Net prior service (cost) credit	(60)	(78)
Total recorded in Accumulated other comprehensive loss	$ (5,183)	$ (4,766)

Pensions And Other Postretirement Benefits - Accumulated Benefit Obligations and Projected Benefit Obligations (Details) - Pension Plan - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
U.S.
ABO and PBO [Line Items]
ABO	$ 66,448	$ 64,669
Plans with ABO in Excess of Plan Assets [Abstract]
ABO	66,448	64,669
Fair Value of Plan Assets	61,077	59,239
Plans with PBO in Excess of Plan Assets [Abstract]
PBO	66,468	64,684
Fair Value of Plan Assets	61,077	59,239
Non-U.S.
ABO and PBO [Line Items]
ABO	20,721	21,319
Plans with ABO in Excess of Plan Assets [Abstract]
ABO	12,042	10,996
Fair Value of Plan Assets	4,185	3,940
Plans with PBO in Excess of Plan Assets [Abstract]
PBO	12,128	11,079
Fair Value of Plan Assets	$ 4,186	$ 3,940

Pensions And Other Postretirement Benefits - Components of Expense and Assumptions (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Postretirement Benefits Plan
Components of expense
Service cost		$ 19	$ 17	$ 20
Interest cost		173	220	195
Expected return on plan assets		0	0	0
Amortization of net actuarial losses		74	30	54
Curtailments, settlements and other		(8)	(23)	(19)
Net periodic pension and OPEB (income) expense		$ 258	$ 244	$ 250
Weighted-average assumptions used to determine benefit obligations(a)
Discount rate	2.53%	2.53%	3.24%	4.19%
Weighted-average assumptions used to determine net expense(a)
Discount rate		3.00%	4.07%	3.29%
U.S. \| Pension Plan
Components of expense
Service cost		$ 251	$ 393	$ 330
Service cost		177	179
Interest cost		1,716	2,264	2,050
Expected return on plan assets		(3,267)	(3,483)	(3,890)
Amortization of net actuarial losses		16	11	10
Curtailments, settlements and other		17	21	(19)
Net periodic pension and OPEB (income) expense		$ (1,267)	$ (794)	$ (1,519)
Weighted-average assumptions used to determine benefit obligations(a)
Discount rate	2.37%	2.37%	3.20%	4.22%
Weighted-average assumptions used to determine net expense(a)
Discount rate		2.84%	3.92%	3.19%
Expected rate of return on plan assets		5.88%	6.37%	6.61%
Administrative expenses and Pension Benefit Guarantee Corporation premiums			$ 214	$ 121
U.S. \| Pension Plan \| Plan
Weighted-average assumptions used to determine net expense(a)
Expected rate of return on plan assets		5.60%	5.90%
Non-U.S. \| Pension Plan
Components of expense
Service cost		$ 145	$ 132	163
Service cost		133	120
Interest cost		362	456	464
Expected return on plan assets		(675)	(786)	(825)
Amortization of net actuarial losses		171	122	144
Curtailments, settlements and other		241	142	43
Net periodic pension and OPEB (income) expense		$ 244	$ 66	$ (11)
Weighted-average assumptions used to determine benefit obligations(a)
Discount rate	1.62%	1.62%	2.16%	2.86%
Weighted-average assumptions used to determine net expense(a)
Discount rate		2.80%	3.36%	2.99%
Expected rate of return on plan assets		4.96%	5.76%	6.09%
Canada \| Pension Plan
Weighted-average assumptions used to determine net expense(a)
Payment for annuity purchase	$ 1,500
Non-operating pension settlement charge	$ 130

Pensions And Other Postretirement Benefits - Target Allocation tables (Details) - Pension Plan	Dec. 31, 2020	Dec. 31, 2019
U.S.
Defined Benefit Plan Disclosure [Line Items]
Target allocations	100.00%	100.00%
U.S. \| Equity
Defined Benefit Plan Disclosure [Line Items]
Target allocations	12.00%	12.00%
U.S. \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocations	64.00%	64.00%
U.S. \| Other
Defined Benefit Plan Disclosure [Line Items]
Target allocations	24.00%	24.00%
Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Target allocations	100.00%	100.00%
Non-U.S. \| Equity
Defined Benefit Plan Disclosure [Line Items]
Target allocations	16.00%	14.00%
Non-U.S. \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocations	66.00%	67.00%
Non-U.S. \| Other
Defined Benefit Plan Disclosure [Line Items]
Target allocations	18.00%	19.00%

Pensions And Other Postretirement Benefits - Assets and Fair Value Measurements (Details) - Pension Plan - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
U.S.
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	$ 46,721	$ 45,283
Plan assets measured at net asset value	13,732	13,466
Other plan assets (liabilities), net	624	490
Net plan assets	61,077	59,239	$ 56,102
U.S. \| Common and preferred stocks
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	7,430	6,252
U.S. \| Government and agency debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	13,231	13,843
U.S. \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	26,475	24,809
U.S. \| Other investments, net
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	(415)	379
U.S. \| Investment funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at net asset value	7,534	7,031
U.S. \| Private equity and debt investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at net asset value	3,137	2,951
U.S. \| Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at net asset value	3,061	3,484
U.S. \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	6,595	6,185
U.S. \| Level 1 \| Common and preferred stocks
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	7,429	6,232
U.S. \| Level 1 \| Government and agency debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	0
U.S. \| Level 1 \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	0
U.S. \| Level 1 \| Other investments, net
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	(834)	(47)
U.S. \| Level 1 \| Equity options and futures contracts
Defined Benefit Plan Disclosure [Line Items]
Net derivative liability	1,000
U.S. \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	39,698	38,696
U.S. \| Level 2 \| Common and preferred stocks
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	19
U.S. \| Level 2 \| Government and agency debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	13,231	13,843
U.S. \| Level 2 \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	26,475	24,809
U.S. \| Level 2 \| Other investments, net
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	(8)	25
U.S. \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	428	402
U.S. \| Level 3 \| Common and preferred stocks
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	1	1
U.S. \| Level 3 \| Government and agency debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	0
U.S. \| Level 3 \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	0
U.S. \| Level 3 \| Other investments, net
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	427	401
Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	6,591	7,783
Plan assets measured at net asset value	7,276	7,101
Other plan assets (liabilities), net	(21)	77
Net plan assets	13,846	14,961	$ 13,528
Non-U.S. \| Common and preferred stocks
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	572	490
Non-U.S. \| Government and agency debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	3,178	3,927
Non-U.S. \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	2,762	3,230
Non-U.S. \| Other investments, net
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	79	136
Non-U.S. \| Investment funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at net asset value	5,870	5,608
Non-U.S. \| Private equity and debt investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at net asset value	489	511
Non-U.S. \| Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at net asset value	917	982
Non-U.S. \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	603	484
Non-U.S. \| Level 1 \| Common and preferred stocks
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	572	489
Non-U.S. \| Level 1 \| Government and agency debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	0
Non-U.S. \| Level 1 \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	0
Non-U.S. \| Level 1 \| Other investments, net
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	31	(5)
Non-U.S. \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	5,861	7,051
Non-U.S. \| Level 2 \| Common and preferred stocks
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	1
Non-U.S. \| Level 2 \| Government and agency debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	3,178	3,927
Non-U.S. \| Level 2 \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	2,762	3,230
Non-U.S. \| Level 2 \| Other investments, net
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	(79)	(107)
Non-U.S. \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	127	248
Non-U.S. \| Level 3 \| Common and preferred stocks
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	0
Non-U.S. \| Level 3 \| Government and agency debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	0
Non-U.S. \| Level 3 \| Corporate and other debt securities
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	0	0
Non-U.S. \| Level 3 \| Other investments, net
Defined Benefit Plan Disclosure [Line Items]
Net plan assets subject to leveling	$ 127	$ 248

Pensions And Other Postretirement Benefits - Pension Benefit Payments (Details) $ in Millions	Dec. 31, 2020 USD ($)
Other Postretirement Benefits Plan
Defined Benefit Plan, Expected Future Benefit Payments [Abstract]
2021	$ 379
2022	374
2023	369
2024	364
2025	361
2026 - 2030	1,761
U.S. \| Pension Plan
Defined Benefit Plan, Expected Future Benefit Payments [Abstract]
2021	4,821
2022	4,614
2023	4,495
2024	4,387
2025	4,278
2026 - 2030	19,469
Non-U.S. \| Pension Plan
Defined Benefit Plan, Expected Future Benefit Payments [Abstract]
2021	1,172
2022	1,070
2023	1,038
2024	1,015
2025	1,000
2026 - 2030	$ 4,673

Commitments and Contingencies - Litigation-Related Liability and Tax Administrative Matters (Details)	1 Months Ended	3 Months Ended	10 Months Ended	12 Months Ended
	Sep. 30, 2018 jurisdiction	Dec. 31, 2020 USD ($) action	Dec. 31, 2020 USD ($) action recall	Dec. 31, 2020 USD ($) action employee	Dec. 31, 2019 USD ($)	Dec. 31, 2017 state	Aug. 31, 2017 state
Indirect Tax Matters
Loss Contingencies [Line Items]
Reasonably possible loss		$ 750,000,000	$ 750,000,000	$ 750,000,000
Ignition Switch Recall Litigations - Economic Damage \| Pending Litigation
Loss Contingencies [Line Items]
Number of jurisdictions \| jurisdiction	27
Ignition Switch Recall Litigations - Economic Damage \| Proposed Settlement
Loss Contingencies [Line Items]
Number of safety recalls \| recall			7
Amount awarded to other party			$ 120,000,000
Ignition Switch Recall Litigations - Economic Damage \| Proposed Settlement \| Maximum
Loss Contingencies [Line Items]
Attorneys' fees and costs			$ 35,000,000
Ignition Switch Recall Litigations - Economic Damage \| U.S. and Canada
Loss Contingencies [Line Items]
Number of filed claims \| action		100	100	100
Ignition Switch Recall Litigations - Lost Personal Time and Certain Unjust Enrichment Claims
Loss Contingencies [Line Items]
Number of jurisdictions \| jurisdiction	47
Ignition Switch Recall Litigations - Lost Personal Time and Certain Unjust Enrichment Claims \| Granted Motion to Dismiss
Loss Contingencies [Line Items]
Number of jurisdictions \| jurisdiction	41
Ignition Switch Recall Litigations - July 2009 Sale Order
Loss Contingencies [Line Items]
Number of states \| state							16
Ignition Switch Recall Litigations - July 2009 Sale Order \| Granted Motion to Dismiss
Loss Contingencies [Line Items]
Number of states \| state							7
Ignition Switch Recall Litigations - July 2009 Sale Order \| Pending Litigation
Loss Contingencies [Line Items]
Number of states \| state						8	9
Korea Wage Litigation - Hourly
Loss Contingencies [Line Items]
Number of plaintiffs \| employee				10,000
Number of employees in the case \| employee				5
Korea Wage Litigation - Salaried
Loss Contingencies [Line Items]
Reasonably possible loss		$ 190,000,000	$ 190,000,000	$ 190,000,000
Korea Wage Litigation - Former Subcontract Workers
Loss Contingencies [Line Items]
Reasonably possible loss		120,000,000	120,000,000	120,000,000
Takata Passenger-side Airbags
Loss Contingencies [Line Items]
Increase in product warranty accrual		1,100,000,000
Amended and Restated Master Sale and Purchase Agreement \| Ignition Switch Recall Litigations - Contingently Issuable Shares
Loss Contingencies [Line Items]
Allowed general unsecured claims amount		35,000,000,000.0	35,000,000,000.0	35,000,000,000.0
Foreign Tax Authority \| Brazil
Loss Contingencies [Line Items]
Estimated potential recovery from taxing authority					$ 1,400,000,000
MLC GUC Trust \| Ignition Switch Recall Litigations - Economic Damage \| Proposed Settlement
Loss Contingencies [Line Items]
Amount awarded to other party			50,000,000
MLC GUC Trust \| Ignition Switch Recall Litigations - Contingently Issuable Shares \| Proposed Settlement
Loss Contingencies [Line Items]
Amount petitioned to be distributed to unitholders		$ 300,000,000	300,000,000	$ 300,000,000
GM \| Ignition Switch Recall Litigations - Economic Damage \| Proposed Settlement
Loss Contingencies [Line Items]
Amount awarded to other party			$ 70,000,000

Commitments and Contingencies - Other Litigation and Loss Contingencies (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Maximum liability, guarantees	$ 3,100	$ 2,600
Rebates available	1,300	1,300
Indirect Tax Matters
Loss Contingencies [Line Items]
Reasonably possible loss	750
Accrued liabilities and Other liabilities
Loss Contingencies [Line Items]
Product liability	589	544
Credit card program deferred revenue	252	253
Litigation-related liability and tax administrative matters	1,200	$ 1,300
Korea Wage Litigation - Former Subcontract Workers
Loss Contingencies [Line Items]
Reasonably possible loss	120
Warranty provision	$ 240

Commitments and Contingencies - Noncancelable Operating Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Rent expense	$ 317	$ 354	$ 300
Operating lease liabilities	969	1,010
Operating right-of-use assets obtained in exchange for lease obligations	222	$ 497
2021	251
2022	205
2023	196
2024	151
2025	122
Thereafter	437
Imputed interest	$ 184
Weighted average discount rate	4.00%	4.20%
Weighted-average remaining lease term	7 years 4 months 24 days	7 years 2 months 12 days
Payments for operating leases	$ 309	$ 337
Amount of lease agreements not yet commenced	150
Other assets
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	1,000	1,100
Accrued liabilities
Lessee, Lease, Description [Line Items]
Operating lease liability	209	239
Other liabilities
Lessee, Lease, Description [Line Items]
Operating lease liabilities	$ 969	$ 1,000

Income Taxes - Pre-tax Income and Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Contingency [Line Items]
Income before income taxes and equity income	$ 7,421	$ 6,168	$ 6,386
Current income tax expense (benefit)
U.S. federal	84	42	(104)
U.S. state and local	272	102	113
Non-U.S.	493	758	577
Total current income tax expense	849	902	586
Deferred income tax expense (benefit)
U.S. federal	632	(145)	(578)
U.S. state and local	(15)	3	250
Non-U.S.	308	9	216
Total deferred income tax expense (benefit)	925	(133)	(112)
Total income tax expense	1,774	769	474
Basis differences from reinvested earnings	3,200	3,200
China JVs
Deferred income tax expense (benefit)
Additional basis differences	4,100	4,100
U.S.
Income Tax Contingency [Line Items]
Income before income taxes and equity income	6,881	3,826	4,433
Non-U.S.
Income Tax Contingency [Line Items]
Income before income taxes and equity income	$ 540	$ 2,342	$ 1,953

Income Taxes - Income Tax Expense (Benefit) Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax expense at U.S. federal statutory income tax rate	$ 1,558	$ 1,295	$ 1,341
State and local tax expense	219	117	282
Non-U.S. income taxed at other than the U.S. federal statutory tax rate	(1)	166	90
U.S. tax impact on Non-U.S. income and activities	(160)	(197)	(822)
Change in valuation allowances	370	(233)	1,695
Change in tax laws	0	(122)	(134)
General business credits and manufacturing incentives	(366)	(420)	(695)
Capital loss expiration	0	0	107
Settlements of prior year tax matters	(18)	0	(188)
Realization of basis differences in affiliates	(12)	0	(59)
Foreign currency remeasurement	(7)	74	19
Other adjustments	191	89	(172)
Total income tax expense	1,774	769	474
Germany
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Change in tax laws	$ 0	$ 0	$ (990)

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets
Postretirement benefits other than pensions	$ 1,742	$ 1,695
Pension and other employee benefit plans	2,999	2,968
Warranties, dealer and customer allowances, claims and discounts	5,538	6,299
Miscellaneous	3,479	1,965
Total deferred tax assets before valuation allowances	34,991	34,379
Less: valuation allowances	(9,095)	(8,135)
Total deferred tax assets	25,896	26,244
Deferred tax liabilities
Property, plant and equipment	1,670	1,565
Intangible assets	744	763
Total deferred tax liabilities	2,414	2,328
Net deferred tax assets	23,482	23,916
U.S.
Deferred tax assets
U.S. capitalized research expenditures	6,763	6,035
Operating loss and tax credit carryforwards	7,254	8,686
Deferred tax liabilities
Operating loss and tax credit carryforwards subject to expiration	7,100
Operating loss and tax credit carryforwards not subject to expiration	137
Non-U.S.
Deferred tax assets
Operating loss and tax credit carryforwards	7,216	6,731
Deferred tax liabilities
Operating loss and tax credit carryforwards subject to expiration	1,300
Operating loss and tax credit carryforwards not subject to expiration	5,900
Germany, Spain and South Korea
Deferred tax assets
Less: valuation allowances	$ (9,100)	$ (8,100)

Income Taxes - Uncertain Tax Positions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of period	$ 775	$ 1,341	$ 1,557
Additions to current year tax positions	435	18	292
Additions to prior years' tax positions	26	13	264
Reductions to prior years' tax positions	(132)	(501)	(244)
Reductions in tax positions due to lapse of statutory limitations	(3)	(8)	(38)
Settlements	(10)	(93)	(450)
Other	(5)	5	(40)
Balance at end of period	1,086	775	$ 1,341
Unrecognized tax benefit that would favorably affect effective tax rate	851	539
Income tax related interest and penalties accrual	$ 92	$ 117

Restructuring And Other Initiatives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 564	$ 1,122	$ 227
Additions, interest accretion and other	565	629	1,637
Payments	(678)	(1,101)	(600)
Revisions to estimates and effect of foreign currency	(99)	(86)	(142)
Balance at end of period	352	564	1,122
Change in valuation allowances	370	(233)	1,695
GMI \| Australia, New Zealand, Thailand and India
Restructuring Reserve [Roll Forward]
Restructuring charges and other charges	683
GMI \| Thailand
Restructuring Reserve [Roll Forward]
Proceeds from sale of business	143
GMI \| Australia and New Zealand
Restructuring Reserve [Roll Forward]
Change in valuation allowances	236
Unallocation of Products to Certain Manufacturing Facilities And Other Employee Separation Programs
Restructuring Reserve [Roll Forward]
Payments	(333)	(1,100)
Restructuring cost incurred to date		3,100
Unallocation of Products to Certain Manufacturing Facilities And Other Employee Separation Programs \| GMNA
Restructuring Reserve [Roll Forward]
Restructuring charges and other charges		1,800	1,300
Dealer Restructurings, Employee Separations and Supplier Claim Charges \| GMI \| Australia, New Zealand, Thailand and India
Restructuring Reserve [Roll Forward]
Restructuring charges and other charges	360
Asset Impairments, Sales Allowances, Inventory Provisions and Other Charges \| GMI \| Australia, New Zealand, Thailand and India
Restructuring Reserve [Roll Forward]
Restructuring charges and other charges	323
Dealer Restructuring and Employee Separation Payments \| GMI \| Australia, New Zealand, Thailand and India
Restructuring Reserve [Roll Forward]
Payments	$ (197)
Employee Severance \| GMNA
Restructuring Reserve [Roll Forward]
Restructuring charges and other charges			1,000
Non-cash Accelerated Depreciation \| GMNA
Restructuring Reserve [Roll Forward]
Restructuring charges and other charges		1,300	301
Supplier Related Charges and Employee Separation Charges \| GMNA
Restructuring Reserve [Roll Forward]
Restructuring charges and other charges		$ 535
Facility closing \| GMI \| Gunsan Korea Plant
Restructuring Reserve [Roll Forward]
Restructuring charges and other charges			1,000
Severance Costs			495
Non-cash Asset Impairments and Other Charges \| GMI \| Gunsan Korea Plant
Restructuring Reserve [Roll Forward]
Restructuring charges and other charges			537
Employee Severance and Statutory Pension Payments \| GMI \| Gunsan Korea Plant
Restructuring Reserve [Roll Forward]
Payments			$ (775)

Interest Income and Other Non-Operating Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Income and Expenses [Abstract]
Non-service pension and OPEB income	$ 1,095	$ 797	$ 1,665
Interest income	241	429	335
Licensing agreements income	211	165	296
Revaluation of investments	265	80	258
Other	73	(2)	42
Total interest income and other non-operating income, net	$ 1,885	$ 1,469	$ 2,596

Stockholders' Equity and Noncontrolling Interests - Preferred and Common Stock (Details) $ / shares in Units, $ in Millions	1 Months Ended		12 Months Ended
	Sep. 30, 2020 USD ($) $ / shares	Sep. 30, 2017	Dec. 31, 2020 USD ($) Votes $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) $ / shares
Class of Stock [Line Items]
Preferred stock shares authorized \| shares			2,000,000,000.0
Common stock shares authorized \| shares			5,000,000,000.0
Preferred stock shares outstanding \| shares			0	0
Common stock number of shares issued \| shares			1,400,000,000	1,400,000,000
Common stock shares outstanding \| shares			1,400,000,000	1,400,000,000
Dividends declared per common share (in dollars per share) \| $ / shares			$ 0.38	$ 1.52	$ 1.52
Cash dividends paid on common stock			$ 545	$ 2,165	$ 2,144
Number of votes per share \| Votes			1
Common shares purchased during period \| shares					3,000,000
Amount of common stock purchased during period			$ 90		$ 190
Outstanding warrants (in shares) \| shares					15,000,000
Guarantees - maximum liability			3,100	2,600
Second Tranche of Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares					$ 18.33
GM Cruise
Class of Stock [Line Items]
Investment amount					$ 1,100
GM Cruise \| Series F Preferred Stock
Class of Stock [Line Items]
Proceeds from issuance of preferred stock				1,200
Investment amount				$ 687
GM Cruise \| Convertible Preferred Stock
Class of Stock [Line Items]
Annual dividend rate					7.00%
Proceeds from issuance of preferred stock					$ 900
GM Cruise \| SoftBank Vision Fund (AIV M2), L.P. \| Convertible Preferred Stock
Class of Stock [Line Items]
Additional purchase amount					1,350
GM Cruise \| Honda Motor Co., Ltd \| Common Class E
Class of Stock [Line Items]
Proceeds from issuance of common stock					750
GM Korea
Class of Stock [Line Items]
Planned capital expenditures					$ 2,000
GM Korea \| Korea Development Bank \| Class B Preferred Shares
Class of Stock [Line Items]
Annual dividend rate					1.00%
Proceeds from issuance of preferred stock					$ 720
Financial Guarantee \| GM Korea
Class of Stock [Line Items]
Guarantees - maximum liability					2,800
GM Financial \| Fixed-to-Floating Rate Cumulative Perpetual Preferred Stock, Series B
Class of Stock [Line Items]
Preferred stock issued	$ 500
Preferred stock par value (in dollars per share) \| $ / shares	$ 0.01
Liquidation preference of preferred stock per share (in dollars per share) \| $ / shares	$ 1,000
Annual dividend rate	5.70%
GM Financial \| Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock issued						$ 500
Preferred stock par value (in dollars per share) \| $ / shares						$ 0.01
Liquidation preference of preferred stock per share (in dollars per share) \| $ / shares						$ 1,000
Annual dividend rate		6.50%
GM
Class of Stock [Line Items]
Amount of common stock purchased during period			$ 90		$ 100

Stockholders' Equity and Noncontrolling Interests - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	$ 45,957	$ 42,777	$ 36,200
Other comprehensive loss, net of tax	(2,318)	(2,128)	(936)
Balance at end of period	49,677	45,957	42,777
Foreign currency translation adjustments [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(2,278)	(2,250)	(1,606)
Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of tax and impact of adoption of accounting standards	(480)	(56)	(664)
Reclassification adjustment, net of tax	23	28	20
Other comprehensive loss, net of tax	(457)	(28)	(644)
Balance at end of period	(2,735)	(2,278)	(2,250)
Defined benefit plans attributable [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(8,859)	(6,737)	(6,398)
Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of impact of adoption of accounting standards	(2,661)	(2,769)	(580)
Tax benefit	444	463	100
Other comprehensive loss before reclassification adjustment, net of tax and impact of adoption of accounting standards	(2,217)	(2,306)	(480)
Reclassification adjustment, net of tax	422	184	141
Other comprehensive loss, net of tax	(1,795)	(2,122)	(339)
Balance at end of period	$ (10,654)	$ (8,859)	$ (6,737)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Basic Earnings per Common Share
Income from continuing operations	$ 6,427	$ 6,732	$ 8,084
Less: cumulative dividends on subsidiary preferred stock	(180)	(151)	(98)
Income from continuing operations attributable to common stockholders	6,247	6,581	7,986
Loss from discontinued operations, net of tax	0	0	70
Net income attributable to common stockholders	$ 6,247	$ 6,581	$ 7,916
Weighted-average common shares outstanding - basic (in shares)	1,433	1,424	1,411
Basic earnings per common share – continuing operations (in dollars per share)	$ 4.36	$ 4.62	$ 5.66
Basic loss per common share – discontinued operations (in dollars per share)	0	0	0.05
Basic earnings per common share (in dollars per share)	$ 4.36	$ 4.62	$ 5.61
Diluted earnings per share
Income from continuing operations attributable to common stockholders – diluted	$ 6,247	$ 6,581	$ 7,986
Loss from discontinued operations, net of tax – diluted	0	0	70
Net income attributable to common stockholders – diluted	$ 6,247	$ 6,581	$ 7,916
Weighted-average common shares outstanding - basic (in shares)	1,433	1,424	1,411
Dilutive effect of warrants and awards under stock incentive plans (in shares)	9	15	20
Weighted-average common shares outstanding – diluted (in shares)	1,442	1,439	1,431
Diluted earnings per common share – continuing operations (in dollars per share)	$ 4.33	$ 4.57	$ 5.58
Diluted loss per common share – discontinued operations (in dollars per share)	0	0	0.05
Diluted earnings per common share (in dollars per share)	$ 4.33	$ 4.57	$ 5.53
Potentially dilutive securities (in shares)	7	7	9

Discontinued Operations - Financial Information about Discontinued Operations (Details) - Discontinued Operations - Opel/Vauxhall Business - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations	$ 0	$ 0	$ 70
Net sales and revenue	144	1,129	1,939
Purchases and expenses	392	825	1,422
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash payments	630	975	1,849
Cash receipts	$ 252	$ 1,408	$ 2,310

Stock Incentive Plans (Details) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Stock Incentive Awards Units Outstanding (Roll Forward)
Units outstanding at beginning of period (in shares)	41.5
Granted (in shares)	13.3
Settled (in shares)	(13.5)
Forfeited or expired (in shares)	(2.7)
Units outstanding at end of period (in shares)	38.6	41.5
Stock Incentive Awards Weighted Average Grant Date Fair Value (Per Share) [Roll Forward]
Weighted-average grant date fair value, Units outstanding at beginning of period (in dollars per share)	$ 19.17
Weighted-average grant date fair value, granted (in dollars per share)	22.50
Weighted-average grant date fair value, settled (in dollars per share)	19.31
Weighted-average grant date fair value, forfeited or expired (in dollars per share)	27.23
Weighted-average grant date fair value, Units outstanding at end of period (in dollars per share)	$ 19.17	$ 19.17	$ 19.84
Remaining Contractual Term [Abstract]
Weighted Average Remaining Contractual Terms in years, Outstanding	10 months 24 days	10 months 24 days

Stock Incentive Plans - Narrative (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock Incentive Plans Narratives [Abstract]
Unrecognized compensation expense	$ 213
Compensation expense	$ 351	$ 456	$ 316
Weighted-average period for total unrecognized compensation expense for nonvested equity awards	1 year 3 months 18 days
Fair value of stock incentive awards vested	$ 275	$ 287	$ 317
Performance Share Units (PSUs)
Stock Incentive Plans Narratives [Abstract]
Performance period	3 years
Stock options
Stock Incentive Plans Narratives [Abstract]
Expiration period	10 years
Dividend yield	4.25%	3.90%	3.69%
Expected volatility rate	26.20%	28.00%	28.00%
Risk-free interest rate	1.44%	2.62%	2.73%
Expected option life	5 years 11 months 19 days	6 years	5 years 11 months 23 days
Performance-based Employee Stock Options
Stock Incentive Plans Narratives [Abstract]
Service period	55 months
Service-based Employee Stock Options \| Minimum
Stock Incentive Plans Narratives [Abstract]
Service period	19 months
Service-based Employee Stock Options \| Maximum
Stock Incentive Plans Narratives [Abstract]
Service period	3 years
Restricted Stock Awards (RSAs)
Stock Incentive Plans Narratives [Abstract]
Service period	3 years
Restricted Stock Units (RSUs)
Stock Incentive Plans Narratives [Abstract]
Service period	3 years
Cruise Stock Incentive Awards
Stock Incentive Plans Narratives [Abstract]
Unrecognized compensation expense	$ 863
Cruise Stock Incentive Awards \| Stock options
Stock Incentive Plans Narratives [Abstract]
Expiration period	10 years
Granted (in shares)	0.0
Cruise Stock Incentive Awards \| Stock options \| Minimum
Stock Incentive Plans Narratives [Abstract]
Service period	4 years
Cruise Stock Incentive Awards \| Stock options \| Maximum
Stock Incentive Plans Narratives [Abstract]
Service period	10 years
Cruise Stock Incentive Awards \| Stock options and RSUs
Stock Incentive Plans Narratives [Abstract]
Weighted-average period for total unrecognized compensation expense for nonvested equity awards	7 years 1 month 6 days
Total units outstanding (in shares)	79.3
Cruise Stock Incentive Awards \| Restricted Stock Units (RSUs)
Stock Incentive Plans Narratives [Abstract]
Unrecognized compensation expense	$ 0	$ 0	$ 0
Cruise Stock Incentive Awards \| Restricted Stock Units (RSUs) \| Maximum
Stock Incentive Plans Narratives [Abstract]
Service period	4 years

Segment Reporting - Summary of key financial information by segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue and others for Reportable Segment [Abstract]
Net sales and revenue	$ 122,485	$ 137,237	$ 147,049
Earnings (loss) before interest and taxes-adjusted	9,710	8,393	11,783
Adjustments	(652)	(539)	(2,905)
Automotive interest expense	(4,121)	(4,423)	(3,880)
Net loss attributable to noncontrolling interests	(106)	(65)	(9)
Income before income taxes	8,095	7,436	8,549
Income tax (expense)	(1,774)	(769)	(474)
Income from continuing operations	6,321	6,667	8,075
Loss from discontinued operations, net of tax	0	0	(70)
Net income attributable to stockholders	6,427	6,732	8,014
Equity in net assets of nonconsolidated affiliates	8,406	8,562	9,215
Goodwill and intangible assets, net	5,230	5,337	5,579
Total Assets	235,194	228,037	227,339
Expenditures for property	5,300	7,592	8,761
Depreciation and amortization	12,676	14,060	13,142
Impairment charges	139	58	527
Equity income	674	1,268	2,163
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| FAW-GM
Revenue and others for Reportable Segment [Abstract]
Loss on sale of discontinued operations before taxes		(164)
GMNA \| Transformation Activities
Revenue and others for Reportable Segment [Abstract]
Restructuring charges and other charges		1,600	1,200
GMI \| Transformation Activities
Revenue and others for Reportable Segment [Abstract]
Restructuring charges and other charges		115
GMI \| Separation Programs in Korea
Revenue and others for Reportable Segment [Abstract]
Deconsolidation loss			1,200
GMI \| Brazil \| GM Brazil Indirect Tax Claim
Revenue and others for Reportable Segment [Abstract]
Estimated potential recovery from taxing authority		1,400
Operating Segments \| Cruise
Revenue and others for Reportable Segment [Abstract]
Net sales and revenue	103	100	0
Earnings (loss) before interest and taxes-adjusted	(887)	(1,004)	(728)
Adjustments	0	0	0
Equity in net assets of nonconsolidated affiliates	0	0	0
Goodwill and intangible assets, net	735	634	671
Total Assets	3,625	4,230	3,195
Expenditures for property	15	60	15
Depreciation and amortization	43	21	7
Impairment charges	20	36	0
Equity income	0	0	0
Operating Segments \| GM Financial
Revenue and others for Reportable Segment [Abstract]
Net sales and revenue	13,831	14,554	14,016
Earnings (loss) before interest and taxes-adjusted	2,702	2,104	1,893
Adjustments	0	0	0
Equity in net assets of nonconsolidated affiliates	1,581	1,455	1,355
Goodwill and intangible assets, net	1,343	1,355	1,356
Total Assets	113,410	108,881	109,953
Expenditures for property	34	47	60
Depreciation and amortization	7,245	7,350	7,531
Impairment charges	0	0	0
Equity income	147	166	183
Eliminations/ Reclassifications
Revenue and others for Reportable Segment [Abstract]
Net sales and revenue	(118)	(114)	(110)
Earnings (loss) before interest and taxes-adjusted	(14)	(18)	(4)
Adjustments	0	0	0
Equity in net assets of nonconsolidated affiliates	0	0	0
Goodwill and intangible assets, net	0	0	0
Total Assets	(1,466)	(1,454)	(1,487)
Expenditures for property	0	0	0
Depreciation and amortization	0	0	0
Impairment charges	0	0	0
Equity income	0	0	0
Automotive
Revenue and others for Reportable Segment [Abstract]
Automotive interest income	241	429	335
Automotive interest expense	(1,098)	(782)	(655)
Automotive \| Operating Segments
Revenue and others for Reportable Segment [Abstract]
Net sales and revenue	108,669	122,697	133,143
Earnings (loss) before interest and taxes-adjusted	7,909	7,311	10,622
Adjustments	(652)	(539)	(2,905)
Equity in net assets of nonconsolidated affiliates	6,825	7,107	7,860
Goodwill and intangible assets, net	3,152	3,348	3,552
Total Assets	119,625	116,380	115,678
Expenditures for property	5,251	7,485	8,686
Depreciation and amortization	5,388	6,689	5,604
Impairment charges	119	22	527
Equity income	527	1,102	1,980
Automotive \| Operating Segments \| GMNA
Revenue and others for Reportable Segment [Abstract]
Net sales and revenue	96,733	106,366	113,792
Earnings (loss) before interest and taxes-adjusted	9,071	8,204	10,769
Adjustments	(99)	(1,618)	(1,236)
Equity in net assets of nonconsolidated affiliates	242	84	75
Goodwill and intangible assets, net	2,346	2,459	2,623
Total Assets	114,137	109,290	109,763
Expenditures for property	4,501	6,305	7,784
Depreciation and amortization	4,739	6,112	4,995
Impairment charges	20	15	55
Equity income	17	8	8
Automotive \| Operating Segments \| GMI
Revenue and others for Reportable Segment [Abstract]
Net sales and revenue	11,586	16,111	19,148
Earnings (loss) before interest and taxes-adjusted	(528)	(202)	423
Adjustments	(683)	1,081	(1,212)
Equity in net assets of nonconsolidated affiliates	6,583	7,023	7,761
Goodwill and intangible assets, net	806	888	928
Total Assets	23,019	24,969	24,911
Expenditures for property	729	1,096	883
Depreciation and amortization	624	533	562
Impairment charges	99	7	466
Equity income	510	1,123	1,972
Automotive \| Corporate
Revenue and others for Reportable Segment [Abstract]
Net sales and revenue	350	220	203
Earnings (loss) before interest and taxes-adjusted	(634)	(691)	(570)
Adjustments	130	(2)	(457)
Equity in net assets of nonconsolidated affiliates	0	0	24
Goodwill and intangible assets, net	0	1	1
Total Assets	39,933	32,365	31,694
Expenditures for property	21	84	21
Depreciation and amortization	25	46	50
Impairment charges	0	0	6
Equity income	0	(29)	0
Automotive \| Corporate \| Ignition Switch Recall Litigations
Revenue and others for Reportable Segment [Abstract]
Ignition switch related legal matters			440
Automotive \| Eliminations/ Reclassifications
Revenue and others for Reportable Segment [Abstract]
Equity in net assets of nonconsolidated affiliates	0	0	0
Goodwill and intangible assets, net	0	0	0
Total Assets	(57,464)	(50,244)	(50,690)
Expenditures for property	0	0	(2)
Depreciation and amortization	0	(2)	(3)
Impairment charges	0	0	0
Equity income	$ 0	$ 0	$ 0

Segment Reporting - Revenues and long-lived assets by geographic region (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
GM Financial net sales and revenue	$ 13,812	$ 14,540	$ 14,004
Net Sales and Revenue	122,485	137,237	147,049
Long-Lived Assets	77,451	80,872	82,698
Automotive \| U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Automotive net sales and revenue	89,204	97,887	104,413
Long-Lived Assets	24,932	25,401	25,625
Automotive \| Non-U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Automotive net sales and revenue	19,469	24,810	28,632
Long-Lived Assets	12,516	13,190	13,263
GM Financial
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales and Revenue	13,812	14,540	14,004
GM Financial \| U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
GM Financial net sales and revenue	12,227	12,727	12,169
Long-Lived Assets	36,773	39,509	41,334
GM Financial \| Non-U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
GM Financial net sales and revenue	1,585	1,813	1,835
Long-Lived Assets	$ 3,230	$ 2,772	$ 2,476

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Supplemental Information for the Consolidated Statements of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts receivable	$ (1,341)	$ (563)	$ 492
Wholesale receivables funded by GM Financial, net	2,744	663	(2,606)
Inventories	(104)	(761)	399
Automotive equipment on operating leases	53	274	748
Change in other assets	68	(1,550)	(529)
Accounts payable	42	(492)	(537)
Income taxes payable	130	213	(75)
Accrued and other liabilities	(1,991)	(1,573)	732
Total	(399)	(3,789)	(1,376)
Cash paid for income taxes and interest
Cash paid for income taxes, net	719	689	660
Cash Paid for Interest (net of amounts capitalized)	3,958	4,214	3,597
Automotive
Cash paid for income taxes and interest
Cash Paid for Interest (net of amounts capitalized)	1,011	739	656
GM Financial
Cash paid for income taxes and interest
Cash Paid for Interest (net of amounts capitalized)	$ 2,947	$ 3,475	$ 2,941

Subsequent Events (Details) - USD ($) $ in Millions	1 Months Ended
Subsequent Events (Details) - USD ($) $ in Millions	Jan. 31, 2021	Feb. 10, 2021	Dec. 31, 2020	Dec. 31, 2019
Subsequent Event [Line Items]
Deferred tax assets valuation allowance			$ 9,095	$ 8,135
Subsequent Event \| GM Cruise
Subsequent Event [Line Items]
Deferred tax assets valuation allowance		$ 350
Subsequent Event \| Series G Preferred Shares \| GM Cruise \| Microsoft and other investors
Subsequent Event [Line Items]
Proceeds from sale of stock	$ 2,200
Subsequent Event \| Series G Preferred Shares \| GM Cruise \| General Motors Holdings LLC
Subsequent Event [Line Items]
Proceeds from sale of stock	$ 1,000