General Motors (GM) 10-Q 31 Oct 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 12, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	GENERAL MOTORS COMPANY
Entity Central Index Key	1,467,858
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		1,411,403,633

Condensed Consolidated Income S

Condensed Consolidated Income Statements - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net sales and revenue
Total net sales and revenue (Note 3)	$ 35,791	$ 33,623	$ 108,650	$ 107,873
Costs and expenses
Total costs and expenses	34,181	32,047	105,034	101,417
Operating income	1,610	1,576	3,616	6,456
Interest income and other non-operating income, net	651	505	2,130	1,259
Equity income (Note 8)	530	500	1,815	1,585
Income before income taxes	2,630	2,430	7,091	8,870
Income tax expense (Note 15)	100	2,316	1,085	3,637
Income from continuing operations	2,530	114	6,006	5,233
Loss from discontinued operations, net of tax (Note 19)	0	3,096	70	3,935
Net income (loss)	2,530	(2,982)	5,936	1,298
Net (income) loss attributable to noncontrolling interests	4	1	34	(11)
Net income (loss) attributable to stockholders	2,534	(2,981)	5,970	1,287
Net income (loss) attributable to common stockholders	$ 2,503	$ (2,983)	$ 5,910	$ 1,285
Earnings per share (Note 18)
Basic earnings per common share – continuing operations (in dollars per share)	$ 1.77	$ 0.08	$ 4.24	$ 3.52
Basic loss per common share – discontinued operations (in dollars per share)	0	2.14	0.05	2.65
Basic earnings (loss) per common share (in dollars per share)	$ 1.77	$ (2.06)	$ 4.19	$ 0.87
Weighted-average common shares outstanding - basic (in shares)	1,412	1,445	1,410	1,483
Diluted earnings per common share – continuing operations (in dollars per share)	$ 1.75	$ 0.08	$ 4.18	$ 3.46
Diluted loss per common share – discontinued operations (in dollars per share)	0	2.11	0.05	2.61
Diluted earnings (loss) per common share (in dollars per share)	$ 1.75	$ (2.03)	$ 4.13	$ 0.85
Weighted-average common shares outstanding- diluted (in shares)	1,431	1,472	1,431	1,507
Dividends declared per common share (in dollars per share)	$ 0.38	$ 0.38	$ 1.14	$ 1.14
Automotive [Member]
Net sales and revenue
Automotive	$ 32,276	$ 30,466	$ 98,242	$ 98,983
Costs and expenses
Automotive and other cost of sales	28,533	26,852	88,788	86,148
Automotive and other selling, general and administrative expense	2,584	2,303	7,172	7,136
Automotive interest expense	161	151	470	430
GM Financial [Member]
Net sales and revenue
Total net sales and revenue (Note 3)	3,515	3,157	10,408	8,890
Costs and expenses
GM Financial interest, operating and other expenses	$ 3,064	$ 2,892	$ 9,074	$ 8,133

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,530	$ (2,982)	$ 5,936	$ 1,298
Other comprehensive income (loss), net of tax (Note 17)
Foreign currency translation adjustments and other	(209)	371	(503)	572
Defined benefit plans	59	1,213	286	973
Other comprehensive income (loss), net of tax	(150)	1,584	(217)	1,545
Comprehensive income (loss)	2,380	(1,398)	5,719	2,843
Comprehensive (income) loss attributable to noncontrolling interests	4	3	39	(9)
Comprehensive income (loss) attributable to stockholders	$ 2,384	$ (1,395)	$ 5,758	$ 2,834

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current Assets
Cash and cash equivalents	$ 18,435	$ 15,512
Marketable securities (Note 4)	5,916	8,313
Accounts and notes receivable, net	10,376	8,164
Inventories (Note 6)	11,334	10,663
Equipment on operating leases, net (Note 7)	474	1,106
Other current assets (Note 4; Note 9 at VIEs)	4,881	4,465
Total current assets	74,848	68,744
Non-current Assets
Equity in net assets of nonconsolidated affiliates (Note 8)	9,155	9,073
Property, net	38,655	36,253
Goodwill and intangible assets, net	5,651	5,849
Equipment on operating leases, net (Note 7; Note 9 at VIEs)	44,128	42,882
Deferred income taxes	23,242	23,544
Other assets (Note 4; Note 9 at VIEs)	5,946	4,929
Total non-current assets	150,863	143,738
Total Assets	225,711	212,482
Current Liabilities
Accounts payable (principally trade)	25,147	23,929
Accrued liabilities	28,104	25,996
Total current liabilities	84,116	76,890
Non-current Liabilities
Postretirement benefits other than pensions (Note 13)	5,832	5,998
Pensions (Note 13)	11,119	13,746
Other liabilities	12,261	12,394
Total non-current liabilities	100,687	99,392
Total Liabilities	184,803	176,282
Commitments and contingencies (Note 14)
Equity (Note 17)
Common stock, $0.01 par value	14	14
Additional paid-in capital	25,503	25,371
Retained earnings	20,865	17,627
Accumulated other comprehensive loss	(8,321)	(8,011)
Total stockholders’ equity	38,061	35,001
Noncontrolling interests	2,847	1,199
Total Equity	40,908	36,200
Total Liabilities and Equity	225,711	212,482
GM Financial [Member]
Current Assets
GM Financial receivables, net (Note 5; Note 9 at VIEs)	23,432	20,521
Non-current Assets
GM Financial receivables, net (Note 5; Note 9 at VIEs)	24,086	21,208
Current Liabilities
Short-term debt and current portion of long-term debt (Note 10 and Note 9 at VIEs)	27,950	24,450
Non-current Liabilities
Long-term debt (Note 10 and Note 9 at VIEs)	58,427	56,267
Automotive [Member]
Current Liabilities
Short-term debt and current portion of long-term debt (Note 10 and Note 9 at VIEs)	2,915	2,515
Non-current Liabilities
Long-term debt (Note 10 and Note 9 at VIEs)	$ 13,048	$ 10,987

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock par value (in dollars per share)	$ 0.01	$ 0.01

Condensed Consolidated Statem_2

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Income from continuing operations	$ 6,006	$ 5,233
Depreciation and impairment of Equipment on operating leases, net	5,633	4,947
Depreciation, amortization and impairment charges on Property, net	4,390	4,137
Foreign currency remeasurement and transaction (gains) losses	280	(12)
Undistributed earnings of nonconsolidated affiliates, net	185	370
Pension contributions and OPEB payments	(1,750)	(1,109)
Pension and OPEB income, net	(940)	(646)
Provision for deferred taxes	680	3,517
Change in other operating assets and liabilities	(5,258)	(6,061)
Net cash provided by operating activities – continuing operations	9,226	10,376
Net cash provided by operating activities – discontinued operations	0	64
Net cash provided by operating activities	9,226	10,440
Cash flows from investing activities
Expenditures for property	(6,562)	(6,353)
Available-for-sale marketable securities, acquisitions	(2,313)	(4,499)
Available-for-sale marketable securities, liquidations	4,637	7,901
Purchases of finance receivables, net	(17,297)	(15,134)
Principal collections and recoveries on finance receivables	11,776	9,363
Purchases of leased vehicles, net	(13,051)	(14,809)
Proceeds from termination of leased vehicles	8,094	4,649
Other investing activities	(25)	93
Net cash used in investing activities – continuing operations	(14,741)	(18,789)
Net cash provided by (used in) investing activities – discontinued operations (Note 19)	166	(3,972)
Net cash used in investing activities	(14,575)	(22,761)
Cash flows from financing activities
Net increase (decrease) in short-term debt	1,695	(374)
Proceeds from issuance of debt (original maturities greater than three months)	32,801	43,048
Payments on debt (original maturities greater than three months)	(25,408)	(26,034)
Payments to purchase common stock	(100)	(2,994)
Proceeds from issuance of preferred stock (Note 17)	1,753	985
Dividends paid	(1,690)	(1,701)
Other financing activities	(439)	(271)
Net cash provided by financing activities – continuing operations	8,612	12,659
Net cash provided by financing activities – discontinued operations	0	20
Net cash provided by financing activities	8,612	12,679
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(253)	362
Net increase in cash, cash equivalents and restricted cash	3,010	720
Cash, cash equivalents and restricted cash at beginning of period	17,848	15,160
Cash, cash equivalents and restricted cash at end of period	20,858	15,880
Continuing Operations [Member]
Cash flows from financing activities
Cash, cash equivalents and restricted cash at end of period	20,858	15,315
Significant Non-cash Investing and Financing Activity
Non-cash property additions – continuing operations	4,284	3,833
Discontinued Operations [Member]
Cash flows from financing activities
Cash, cash equivalents and restricted cash at end of period	0	565
Significant Non-cash Investing and Financing Activity
Non-cash proceeds on sale of discontinued operations (Note 19)	$ 0	$ 808

Condensed Consolidated Statem_3

Condensed Consolidated Statements Of Equity - USD ($) $ in Millions	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]	Noncontrolling Interests [Member]Preferred Stock [Member]
Balance at beginning of period at Dec. 31, 2016	$ 44,075		$ 15	$ 26,983	$ 26,168	$ (9,330)	$ 239
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,298				1,287		11
Other comprehensive income (loss)	1,545					1,547	(2)
Issuance of preferred stock (Note 17)		$ 985						$ 985
Purchase of common stock	(2,994)		(1)	(1,476)	(1,517)
Exercise of common stock warrants	42			42
Stock based compensation	268			293	(25)
Cash dividends paid on common stock	(1,683)				(1,683)
Dividends to noncontrolling interests	(18)						(18)
Other	(41)			(60)			19
Balance at end of period at Sep. 30, 2017	43,477		14	25,782	24,230	(7,783)	1,234
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2,982)
Other comprehensive income (loss)	1,584
Cash dividends paid on common stock	(546)
Balance at end of period at Sep. 30, 2017	43,477		14	25,782	24,230	(7,783)	1,234
Balance at beginning of period at Dec. 31, 2017	36,200		14	25,371	17,627	(8,011)	1,199
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of accounting standards (Note 1)	(1,144)				(1,046)	(98)
Net income (loss)	5,936				5,970		(34)
Other comprehensive income (loss)	(217)					(212)	(5)
Issuance of preferred stock (Note 17)		$ 1,753						$ 1,753
Purchase of common stock	(100)			(44)	(56)
Exercise of common stock warrants	2			2
Cash dividends paid on common stock	(1,608)				(1,608)
Dividends to noncontrolling interests	(106)						(106)
Other	192			174	(22)		40
Balance at end of period at Sep. 30, 2018	40,908		14	25,503	20,865	(8,321)	2,847
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,530
Other comprehensive income (loss)	(150)
Cash dividends paid on common stock	(537)
Balance at end of period at Sep. 30, 2018	$ 40,908		$ 14	$ 25,503	$ 20,865	$ (8,321)	$ 2,847

Nature of Operations and Basis

Nature of Operations and Basis of Presentation	9 Months Ended
	Sep. 30, 2018
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 (sometimes referred to in this Quarterly Report on Form 10-Q as we, our, us, ourselves, the Company, General Motors or GM) designs, builds and sells cars, trucks, crossovers and automobile parts worldwide. We also provide automotive financing services through General Motors Financial Company, Inc. (GM Financial). We analyze the results of our continuing operations through the following segments: GM North America (GMNA), GM International (GMI), GM Cruise and GM Financial. GM Cruise is our global segment designed to build, grow and invest in our autonomous ride-sharing vehicle business. As a result of the growing importance of our autonomous vehicle operations, we moved these operations from Corporate to GM Cruise and began presenting GM Cruise as a new reportable segment in the three months ended June 30, 2018. All periods presented have been recast to reflect the segment changes. Nonsegment operations and Maven, our ride- and car-sharing business, 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. On July 31, 2017 we closed the sale of the Opel and Vauxhall businesses and certain other assets in Europe (the Opel/Vauxhall Business) to Peugeot, S.A. (PSA Group). On October 31, 2017 we closed the sale of the European financing subsidiaries and branches (the Fincos, and together with the Opel/Vauxhall Business, the European Business) to Banque PSA Finance S.A. and BNP Paribas Personal Finance S.A. The European Business is presented as discontinued operations in our condensed consolidated financial statements for all periods presented. Unless otherwise indicated, information in this report relates to our continuing operations. Refer to Note 19 for additional information on our discontinued operations. The accompanying condensed consolidated financial statements have been prepared in conformity with U.S. GAAP pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial information. Accordingly they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying condensed consolidated financial statements include all adjustments, which consist of normal recurring adjustments and transactions or events discretely impacting the interim periods, considered necessary by management to fairly state our results of operations, financial position and cash flows. The operating results for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our 2017 Form 10-K. Except for per share amounts or as otherwise specified, dollar amounts presented within tables are stated in millions. In the three months ended June 30, 2018 we changed the presentation of our condensed consolidated statements of cash flows to separately classify Depreciation and impairment of Equipment on operating leases, net and Depreciation, amortization and impairment charges on Property, net. We have made corresponding reclassifications to the comparable information for all periods presented. Principles of Consolidation The Principles of Consolidation supplements information presented in our 2017 Form 10-K for the adoption on January 1, 2018 of Accounting Standards Update (ASU) 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities” (ASU 2016-01). We consolidate entities that we control due to ownership of a majority voting interest and we consolidate variable interest entities (VIEs) when we have variable interests and are the primary beneficiary. We continually evaluate our involvement with VIEs to determine when these criteria are met. 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. Beginning January 1, 2018 we no longer use the cost method of accounting. Recently Adopted Accounting Standards Effective January 1, 2018 we adopted ASU 2014-09, "Revenue from Contracts with Customers" as amended (ASU 2014-09), as incorporated into Accounting Standards Codification (ASC) 606, on a modified retrospective basis by recognizing a cumulative effect adjustment to the opening balance of Retained earnings. Under ASU 2014-09 sales incentives will now be recorded at the time of sale rather than at the later of sale or announcement, thereby resulting in the shifting of incentive amounts to an earlier quarter and fixed fee license arrangements will now be recognized when access to intellectual property is granted instead of over the contract period. We currently expect the retiming of quarterly incentive amounts to offset for the year ending December 31, 2018. Actual incentive spending is dependent upon future market conditions. Beginning January 1, 2018 certain transfers to daily rental companies are accounted for as sales when ownership of the vehicle is not expected to transfer back to us. Such transactions were previously accounted for as operating leases. Transfers that occurred prior to January 2018 continue to be accounted for as operating leases because at the original time of transfer an expectation existed that ownership of the vehicle would transfer back to us. The following table summarizes the financial statement line items within our condensed consolidated income statement and balance sheet significantly impacted by ASU 2014-09: Three Months Ended September 30, 2018 As Reported Balances without Adoption of ASC 606 Effect of Change Income Statement Automotive net sales and revenue $ 32,276 $ 32,959 $ (683 ) Income before income taxes $ 2,630 $ 3,321 $ (691 ) Net income attributable to stockholders $ 2,534 $ 3,071 $ (537 ) Nine Months Ended September 30, 2018 As Reported Balances without Adoption of ASC 606 Effect of Change Income Statement Automotive net sales and revenue $ 98,242 $ 97,961 $ 281 Automotive and other cost of sales $ 88,788 $ 87,749 $ 1,039 Income before income taxes $ 7,091 $ 7,661 $ (570 ) Net income attributable to stockholders $ 5,970 $ 6,402 $ (432 ) September 30, 2018 As Reported Balances without Adoption of ASC 606 Effect of Change Balance Sheet Equipment on operating leases, net $ 474 $ 1,428 $ (954 ) Deferred income taxes $ 23,242 $ 22,661 $ 581 Accrued liabilities $ 28,104 $ 25,963 $ 2,141 Other liabilities $ 12,261 $ 12,657 $ (396 ) Retained earnings $ 20,865 $ 22,633 $ (1,768 ) Effective January 1, 2018 we adopted ASU 2016-01, on a modified retrospective basis, with a $182 million cumulative effect adjustment recorded to the opening balance of Retained earnings to adjust an investment previously carried at cost to its fair value. ASU 2016-01 requires equity investments that are not accounted for under the equity method of accounting to be measured at fair value with changes recognized in Net income. In the three months ended March 31, 2018 we adopted ASU 2017-12, "Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities" (ASU 2017-12), on a modified retrospective basis and adopted ASU 2018-02, "Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income” (ASU 2018-02), on a modified retrospective basis. ASU 2018-02 provides the option to reclassify stranded tax effects related to the U.S. Tax Cuts and Jobs Act of 2017 (the Tax Act) in accumulated other comprehensive income to retained earnings. The adjustment relates to the change in the U.S. corporate income tax rate. The cumulative effect of the adjustments to the opening balance of Retained earnings for these adopted standards was $108 million . The following table summarizes the changes to our condensed consolidated balance sheet for the adoption of ASU 2014-09, ASU 2016-01, ASU 2017-12 and ASU 2018-02: December 31, 2017 Adjustment due to ASU 2014-09 Adjustment due to ASU 2016-01, ASU 2017-12 and ASU 2018-02 January 1, 2018 Deferred income taxes $ 23,544 $ 444 $ (63 ) $ 23,925 Other assets $ 4,929 $ 195 $ 242 $ 5,366 GM Financial short-term debt and current portion of long-term debt $ 24,450 $ — $ (13 ) $ 24,437 Accrued liabilities $ 25,996 $ 2,328 $ — $ 28,324 Other liabilities $ 12,394 $ (235 ) $ — $ 12,159 Retained earnings $ 17,627 $ (1,336 ) $ 290 $ 16,581 Accumulated other comprehensive loss $ (8,011 ) $ — $ (98 ) $ (8,109 ) Effective January 1, 2018 we adopted ASU 2016-15, "Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Payments" (ASU 2016-15), which clarified guidance on the classification of certain cash receipts and payments in the statement of cash flows. The adoption of ASU 2016-15 did not have a material impact on our condensed consolidated financial statements and prior periods were not restated. Effective January 1, 2018 we adopted ASU 2017-07, "Compensation - Retirement Benefits (Topic 715), Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost" (ASU 2017-07) on a retrospective basis, which requires that the service cost component of net periodic pension and other postretirement benefits (OPEB) (income) expense be presented in the same income statement line item as other employee compensation costs. The remaining components of net periodic pension and OPEB (income) expense are now presented outside operating income. Amounts previously reflected in Operating income were reclassified to Interest income and other non-operating income, net in accordance with the provisions of ASU 2017-07. Refer to Note 13 for amounts that were reclassified. Accounting Standards Not Yet Adopted In February 2016 the Financial Accounting Standards Board issued ASU 2016-02, "Leases" (ASU 2016-02), which requires us as the lessee to recognize most leases on the balance sheet thereby resulting in the recognition of right of use assets and lease obligations for those leases currently classified as operating leases. The accounting for leases where we are the lessor remains largely unchanged. We are continuing to assess the accounting and disclosure impact of ASU 2016-02 and refine our processes to permit adoption on January 1, 2019. We plan to elect the optional transition method as well as the package of practical expedients upon adoption. We expect the primary impact to our consolidated financial position upon adoption will be the recognition, on a discounted basis, of our minimum commitments under noncancelable operating leases on our consolidated balance sheets resulting in the recording of right of use assets and lease obligations. Our minimum commitments under noncancelable operating leases are not significantly different than those disclosed in our 2017 Form 10-K. In June 2016 the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" (ASU 2016-13), which requires entities to use a new impairment model based on Current Expected Credit Losses (CECL) rather than incurred losses. We plan to adopt ASU 2016-13 on January 1, 2020 on a modified retrospective basis, which will result in an increase to our allowance for credit losses and a decrease to Retained earnings as of the adoption date. Estimated credit losses under CECL will consider relevant information about past events, current conditions and reasonable and supportable forecasts, resulting in recognition of lifetime expected credit losses upon loan origination.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies The information presented on Revenue Recognition, Equipment on Operating Leases, Marketable Debt Securities, Equity Investments and Derivative Financial Instruments supplements the Significant Accounting Policies information presented in our 2017 Form 10-K for the adoption of our recently adopted accounting standards which became effective January 1, 2018. See our 2017 Form 10-K for a description of our significant accounting policies in effect prior to the adoption of the new accounting standards. Revenue Recognition We adopted ASU 2014-09, which requires us to recognize revenue when a customer obtains control rather than when we have transferred substantially all risks and rewards of a good or service. We adopted ASU 2014-09 by applying the modified retrospective method to all noncompleted contracts as of the date of adoption. See Note 1 for additional information pertaining to the adoption of ASU 2014-09. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. The following accounting policies became effective upon the adoption of ASU 2014-09. 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 type, product mix, customer behavior and assumptions concerning market conditions. Historical experience is also considered when establishing our future expectations. Subsequent adjustments to incentive estimates are possible as facts and circumstances change over time. When our customers have a right to return eligible parts and accessories, we consider the returns in our estimation of the transaction price. 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. 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. V e hicle, 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. Certain transfers to daily rental companies are accounted for as sales, with revenue recognized at the time of transfer. Such transactions were previously accounted for as operating leases. At the time of transfer, we defer revenue for remarketing obligations, record a residual value guarantee and reflect a deposit liability for amounts expected to be returned once the remarketing services are complete. Deferred revenue is recognized in earnings upon completion of the remarketing service. Transfers that occurred prior to January 1, 2018 and future transfers containing a substantive purchase obligation continue to be accounted for as operating leases and rental income is recognized over the estimated term of the lease. Used Vehicles Proceeds from the auction of vehicles returned from daily rental car companies 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, 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 less than three years . Automotive Financing - GM Financial Finance charge income earned on receivables is recognized using the effective interest method. Fees and commissions (including incentive payments) received 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 condensed consolidated balance sheets when the related finance receivables are sold, 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 recorded 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 and incentives, is recorded as operating lease revenue on a straight-line basis over the term of the lease agreement. 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 contracts 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 adequacy of 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. Impairment is determined to exist 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's 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's asset group. Fair value is determined primarily using the anticipated cash flows, including estimated residual values. 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 estimated selling price, less costs to sell. 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. Marketable Debt Securities We classify marketable debt securities as either available-for-sale or trading. 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 unrealized gains and losses recorded net of related income taxes in Accumulated other comprehensive loss until realized. Trading debt securities are recorded at fair value with changes in fair value recorded in Interest income and other non-operating income, net. We determine realized gains and losses for all debt securities using the specific identification method. We 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. An evaluation is made quarterly to determine if unrealized losses related to non-trading investments in debt securities are other-than-temporary. Factors considered include the length of time and extent to which the fair value has been below cost, the financial condition and near-term prospects of the issuer and the intent to sell or likelihood to be forced to sell the debt security before any anticipated recovery. 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. Derivative Financial Instruments The following changes to our accounting policies became effective upon adoption of ASU 2017-12. Automotive Certain foreign currency and commodity forward contracts have been designated as cash flow hedges. The risk being hedged is the foreign currency and commodity price 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 Automotive and other cost of sales along with the earnings effect of the hedged item when the hedged item affects earnings. Automotive Financing - GM Financial Certain interest rate swap and foreign currency swap agreements have been designated as cash flow hedges. The risk being hedged is the foreign currency and interest rate 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.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue	Revenue The following table disaggregates our revenue by major source for revenue generating segments : Three Months Ended September 30, 2018 GMNA GMI Corporate Total Automotive GM Financial Eliminations Total Vehicle, parts and accessories $ 26,273 $ 4,226 $ 2 $ 30,501 $ — $ (11 ) $ 30,490 Used vehicles 582 23 — 605 — (1 ) 604 Services and other 795 333 54 1,182 — — 1,182 Automotive net sales and revenue 27,650 4,582 56 32,288 — (12 ) 32,276 Leased vehicle income — — — — 2,501 — 2,501 Finance charge income — — — — 917 (2 ) 915 Other income — — — — 100 (1 ) 99 GM Financial net sales and revenue — — — — 3,518 (3 ) 3,515 Net sales and revenue $ 27,650 $ 4,582 $ 56 $ 32,288 $ 3,518 $ (15 ) $ 35,791 Nine Months Ended September 30, 2018 GMNA GMI Corporate Total Automotive GM Financial Eliminations Total Vehicle, parts and accessories $ 79,029 $ 13,320 $ 12 $ 92,361 $ — $ (36 ) $ 92,325 Used vehicles 2,506 138 — 2,644 — (34 ) 2,610 Services and other 2,434 730 143 3,307 — — 3,307 Automotive net sales and revenue 83,969 14,188 155 98,312 — (70 ) 98,242 Leased vehicle income — — — — 7,445 — 7,445 Finance charge income — — — — 2,667 (5 ) 2,662 Other income — — — — 305 (4 ) 301 GM Financial net sales and revenue — — — — 10,417 (9 ) 10,408 Net sales and revenue $ 83,969 $ 14,188 $ 155 $ 98,312 $ 10,417 $ (79 ) $ 108,650 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 in the three and nine months ended September 30, 2018 . Contract liabilities in our Automotive segments consist primarily of maintenance, extended warranty and other service contracts. We recognized revenue of $426 million and $1.2 billion related to contract liabilities during the three and nine months ended September 30, 2018 . We expect to recognize revenue of $560 million in the three months ending December 31, 2018 and $1.0 billion , $497 million and $600 million in the years ending December 31, 2019, 2020 and thereafter related to contract liabilities as of September 30, 2018 .

Marketable and Other Securities

Marketable and Other Securities	9 Months Ended
	Sep. 30, 2018
Marketable Securities [Abstract]
Marketable and Other Securities	Marketable and Other Securities The following table summarizes the fair value of cash equivalents and marketable debt and equity securities which approximates cost: Fair Value Level September 30, 2018 December 31, 2017 Cash and cash equivalents Cash and time deposits(a) $ 7,144 $ 6,962 Available-for-sale debt securities U.S. government and agencies 2 1,115 750 Corporate debt 2 2,774 3,032 Sovereign debt 2 2,033 1,954 Total available-for-sale debt securities – cash equivalents 5,922 5,736 Money market funds(b) 1 5,369 2,814 Total cash and cash equivalents $ 18,435 $ 15,512 Marketable debt securities U.S. government and agencies 2 $ 1,229 $ 3,310 Corporate debt 2 3,416 3,665 Mortgage and asset-backed 2 685 635 Sovereign debt 2 586 703 Total available-for-sale debt securities – marketable securities $ 5,916 $ 8,313 Restricted cash Cash and cash equivalents $ 198 $ 219 Money market funds 1 2,225 2,117 Total restricted cash $ 2,423 $ 2,336 Available-for-sale debt securities included above with contractual maturities(c) Due in one year or less $ 6,777 Due between one and five years 4,376 Total available-for-sale debt securities with contractual maturities $ 11,153 __________ (a) Includes $364 million that is designated exclusively to fund capital expenditures in GM Korea Company (GM Korea) at September 30, 2018 . Refer to Note 17 for additional information. (b) Includes $1.8 billion in GM Cruise at September 30, 2018 . Refer to Note 17 for additional information. (c) Excludes mortgage and asset-backed securities. Proceeds from the sale of investments classified as available-for-sale and sold prior to maturity were $1.7 billion and $3.7 billion in the three months ended September 30, 2018 and 2017 and $3.6 billion and $5.1 billion in the nine months ended September 30, 2018 and 2017 . Net unrealized gains and losses on available-for-sale debt securities were insignificant in the three and nine months ended September 30, 2018 and 2017 . Cumulative unrealized gains and losses on available-for-sale debt securities were insignificant at September 30, 2018 and December 31, 2017 . Investments in equity securities where market quotations are not available are accounted for at fair value primarily using Level 3 inputs. We recorded an unrealized gain of $142 million in Interest income and other non-operating income, net in the three months ended June 30, 2018 to adjust an investment in an equity security to a fair value of $884 million at June 30, 2018, which remained unchanged at September 30, 2018 . The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheet to the total shown in the condensed consolidated statement of cash flows: September 30, 2018 Cash and cash equivalents $ 18,435 Restricted cash included in Other current assets 1,883 Restricted cash included in Other assets 540 Total $ 20,858

GM Financial Receivables and Tr

GM Financial Receivables and Transactions	9 Months Ended
	Sep. 30, 2018
GM Financial [Member]
Finance Receivables [Line Items]
GM Financial Receivables and Transactions	GM Financial Receivables and Transactions September 30, 2018 December 31, 2017 Retail Commercial Total Retail Commercial Total Finance receivables, collectively evaluated for impairment, net of fees $ 35,442 $ 10,601 $ 46,043 $ 30,486 $ 9,935 $ 40,421 Finance receivables, individually evaluated for impairment, net of fees 2,308 67 2,375 2,228 22 2,250 GM Financial receivables 37,750 10,668 48,418 32,714 9,957 42,671 Less: allowance for loan losses (839 ) (61 ) (900 ) (889 ) (53 ) (942 ) GM Financial receivables, net $ 36,911 $ 10,607 $ 47,518 $ 31,825 $ 9,904 $ 41,729 Fair value of GM Financial receivables utilizing Level 2 inputs $ 10,607 $ 9,904 Fair value of GM Financial receivables utilizing Level 3 inputs $ 36,551 $ 31,831 Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Allowance for loan losses at beginning of period $ 873 $ 893 $ 942 $ 805 Provision for loan losses 180 204 444 573 Charge-offs (285 ) (287 ) (878 ) (858 ) Recoveries 130 135 398 420 Effect of foreign currency 2 3 (6 ) 8 Allowance for loan losses at end of period $ 900 $ 948 $ 900 $ 948 The allowance for loan losses on retail and commercial finance receivables included a collective allowance of $575 million and $611 million and a specific allowance of $325 million and $331 million at September 30, 2018 and December 31, 2017 . Retail Finance Receivables We use proprietary scoring systems in the underwriting process that measure the credit quality of retail finance receivables using several factors, such as credit bureau information, consumer credit risk scores (e.g. FICO score or its equivalent) and contract characteristics. We also consider other factors such as employment history, financial stability and capacity to pay. Subsequent to origination we review the credit quality of retail finance receivables based on customer payment activity. At September 30, 2018 and December 31, 2017 , 27% and 33% of retail finance receivables were from consumers with sub-prime credit scores, which are defined as FICO or equivalent scores of less than 620 at the time of loan origination. An account is considered delinquent if a substantial portion of a scheduled payment has not been received by the date the payment was contractually due. The accrual of finance charge income had been suspended on delinquent retail finance receivables with contractual amounts due of $847 million and $778 million at September 30, 2018 and December 31, 2017 . The following table summarizes the contractual amount of delinquent retail finance receivables, which is not significantly different than the recorded investment of the retail finance receivables: September 30, 2018 September 30, 2017 Amount Percent of Contractual Amount Due Amount Percent of Contractual Amount Due 31-to-60 days delinquent $ 1,302 3.5 % $ 1,176 3.6 % Greater-than-60 days delinquent 498 1.3 % 521 1.6 % Total finance receivables more than 30 days delinquent 1,800 4.8 % 1,697 5.2 % In repossession 53 0.1 % 55 0.2 % Total finance receivables more than 30 days delinquent or in repossession $ 1,853 4.9 % $ 1,752 5.4 % Retail finance receivables classified as troubled debt restructurings and individually evaluated for impairment were $2.3 billion and $2.2 billion and the allowance for loan losses included $317 million and $328 million of specific allowances on these receivables at September 30, 2018 and December 31, 2017 . Commercial Finance Receivables Our commercial finance receivables consist of dealer financings, primarily for inventory purchases. Proprietary models are used to assign a risk rating to each dealer. We perform periodic credit reviews of each dealership and adjust the dealership's risk rating, if necessary. Dealers in Group VI are subject to additional restrictions on funding, including suspension of lines of credit and liquidation of assets. The commercial finance receivables on non-accrual status were insignificant at September 30, 2018 and December 31, 2017 . The following table summarizes the credit risk profile by dealer risk rating of the commercial finance receivables: September 30, 2018 December 31, 2017 Group I – Dealers with superior financial metrics $ 2,077 $ 1,915 Group II – Dealers with strong financial metrics 3,905 3,465 Group III – Dealers with fair financial metrics 3,197 3,239 Group IV – Dealers with weak financial metrics 960 997 Group V – Dealers warranting special mention due to elevated risks 422 260 Group VI – Dealers with loans classified as substandard, doubtful or impaired 107 81 $ 10,668 $ 9,957 Transactions with GM Financial The following table shows transactions between our Automotive segments and GM Financial. These amounts are shown in GM Financial's condensed consolidated balance sheets and statements of income. All balance sheet amounts in the table below are eliminated. Income statement amounts may not fully eliminate due to timing. September 30, 2018 December 31, 2017 Condensed Consolidated Balance Sheets Commercial finance receivables, net due from GM consolidated dealers $ 437 $ 355 Direct-financing lease receivables from GM subsidiaries $ 125 $ 88 Subvention receivable(a) $ 735 $ 306 Commercial loan funding payable $ 86 $ 90 Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Condensed Consolidated Statements of Income Interest subvention earned on finance receivables $ 142 $ 129 $ 409 $ 361 Leased vehicle subvention earned $ 827 $ 786 $ 2,438 $ 2,246 __________ (a) Cash paid by Automotive segments to GM Financial for subvention was $1.1 billion for the three months ended September 30, 2018 and 2017 and $2.8 billion and $3.3 billion for the nine months ended September 30, 2018 and 2017 . GM Financial’s Board of Directors declared a $375 million dividend on its common stock on October 26, 2018, which we received on October 30, 2018.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories September 30, 2018 December 31, 2017 Total productive material, supplies and work in process $ 4,634 $ 4,203 Finished product, including service parts 6,700 6,460 Total inventories $ 11,334 $ 10,663

Equipment on Operating Leases

Equipment on Operating Leases	9 Months Ended
	Sep. 30, 2018
Vehicles [Member]
Property Subject to or Available for Operating Lease [Line Items]
Equipment on Operating Leases	Equipment on Operating Leases Equipment on operating leases consists of leases to retail customers that are recorded as operating leases and vehicle sales to daily rental car companies with an actual or expected repurchase obligation. September 30, 2018 December 31, 2017 Equipment on operating leases $ 55,840 $ 53,947 Less: accumulated depreciation (11,238 ) (9,959 ) Equipment on operating leases, net(a) $ 44,602 $ 43,988 __________ (a) Includes $44.1 billion and $42.9 billion of GM Financial Equipment on operating leases, net at September 30, 2018 and December 31, 2017 . Depreciation expense related to Equipment on operating leases, net was $1.9 billion and $1.8 billion in the three months ended September 30, 2018 and 2017 and $5.6 billion and $4.9 billion in the nine months ended September 30, 2018 and 2017 . The following table summarizes minimum rental payments due to GM Financial on leases to retail customers: Year Ending December 31, 2018 2019 2020 2021 2022 Thereafter Total Minimum rental receipts under operating leases $ 1,882 $ 6,260 $ 3,570 $ 1,077 $ 97 $ 6 $ 12,892

Equity In Net Assets of Noncons

Equity In Net Assets of Nonconsolidated Affiliates	9 Months Ended
	Sep. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]
Equity in Net Assets of Nonconsolidated Affiliates	Equity in Net Assets of Nonconsolidated Affiliates Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Automotive China equity income $ 485 $ 459 $ 1,674 $ 1,472 Other joint ventures equity income 45 41 141 113 Total Equity income $ 530 $ 500 $ 1,815 $ 1,585 There have been no significant ownership changes in our Automotive China joint ventures (Automotive China JVs) since December 31, 2017 . Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Summarized Operating Data of Automotive China JVs Automotive China JVs' net sales $ 11,461 $ 12,161 $ 37,781 $ 34,177 Automotive China JVs' net income $ 999 $ 964 $ 3,370 $ 2,912 Dividends received from our nonconsolidated affiliates were insignificant and $382 million in the three months ended September 30, 2018 and 2017 and $2.0 billion in the nine months ended September 30, 2018 and 2017. We had undistributed earnings of $2.0 billion and $2.2 billion related to our nonconsolidated affiliates at September 30, 2018 and December 31, 2017 .

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2018
Variable Interest Entities [Abstract]
Variable Interest Entities	Variable Interest Entities 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 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 and does not currently intend to provide additional financial support to these SPEs. While these subsidiaries are included in GM Financial's condensed 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: September 30, 2018 December 31, 2017 Restricted cash – current $ 1,733 $ 1,740 Restricted cash – non-current $ 487 $ 527 GM Financial receivables, net of fees – current $ 16,502 $ 15,141 GM Financial receivables, net of fees – non-current $ 13,080 $ 12,944 GM Financial equipment on operating leases, net $ 21,252 $ 22,222 GM Financial short-term debt and current portion of long-term debt $ 19,086 $ 18,972 GM Financial long-term debt $ 20,392 $ 20,356 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 probable loan losses inherent in the finance receivables.

Automotive and GM Financial Deb

Automotive and GM Financial Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Automotive and GM Financial Debt	Automotive and GM Financial Debt September 30, 2018 December 31, 2017 Carrying Amount Fair Value Carrying Amount Fair Value Total automotive debt $ 15,963 $ 16,352 $ 13,502 $ 15,088 Fair value utilizing Level 1 inputs $ 13,971 $ 13,202 Fair value utilizing Level 2 inputs $ 2,381 $ 1,886 In April 2018 we amended and restated our two existing revolving credit facilities and entered into a third facility, increasing our aggregate borrowing capacity from $14.5 billion to $16.5 billion . These facilities consist of a 364 -day, $2.0 billion facility, a three -year, $4.0 billion facility and a five -year, $10.5 billion facility. The facilities are available to us as well as certain wholly- owned subsidiaries, including GM Financial. The three -year, $4.0 billion facility allows for borrowings in U.S. Dollars and other currencies and includes a letter of credit sub-facility of $1.1 billion . The five -year, $10.5 billion facility allows for borrowings in U.S. Dollars and other currencies. The 364 -day, $2.0 billion facility allows for borrowing in U.S. Dollars only. We have allocated the 364 -day, $2.0 billion facility for exclusive use by GM Financial . In September 2018 we issued $2.1 billion in aggregate principal amount of senior unsecured notes with an initial weighted average interest rate of 5.03% and maturity dates ranging from 2021 to 2049. The notes are governed by the same indenture that was used in past issuances, which contains terms and covenants customary of these types of securities including limitation on the amount of certain secured debt we may incur. The net proceeds from the issuance of these senior unsecured notes were used to repay $1.5 billion of debt in October 2018 upon maturity, pre-fund $584 million in certain mandatory contributions for our U.K. and Canada pension plans due in 2019 through 2021, and for other general corporate purposes. September 30, 2018 December 31, 2017 Carrying Amount Fair Value Carrying Amount Fair Value Secured debt $ 39,722 $ 39,679 $ 39,887 $ 39,948 Unsecured debt 46,655 47,062 40,830 41,989 Total GM Financial debt $ 86,377 $ 86,741 $ 80,717 $ 81,937 Fair value utilizing Level 2 inputs $ 84,693 $ 79,623 Fair value utilizing Level 3 inputs $ 2,048 $ 2,314 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 9 for additional information on GM Financial's involvement with VIEs. In the nine months ended September 30, 2018 GM Financial entered into new or renewed credit facilities with a total net additional borrowing capacity of $345 million , which had substantially the same terms as existing debt and GM Financial issued $16.3 billion in aggregate principal amount of securitization notes payable with an initial weighted average interest rate of 2.89% and maturity dates ranging from 2022 to 2026 . Unsecured debt consists of senior notes, credit facilities and other unsecured debt. In the nine months ended September 30, 2018 GM Financial issued $7.2 billion in aggregate principal amount of senior notes with an initial weighted average interest rate of 3.17% and maturity dates ranging from 2020 to 2028 . During the nine months ended September 30, 2018 , GM Financial launched an unsecured commercial paper notes program in the U.S. At September 30, 2018 , the principal amount outstanding of GM Financial's commercial paper in the U.S. was $1.5 billion . Each of the revolving credit facilities and the indentures governing GM Financial's notes contain terms and covenants including limitations on GM Financial's ability to incur certain liens.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments Automotive The following table presents the notional amounts of derivative financial instruments in our automotive operations: Fair Value Level September 30, 2018 December 31, 2017 Derivatives not designated as hedges(a) Foreign currency 2 $ 2,970 $ 4,022 Commodity 2 636 606 PSA warrants(b) 2 46 48 Total derivative financial instruments $ 3,652 $ 4,676 __________ (a) The fair value of these derivative instruments at September 30, 2018 and December 31, 2017 and the gains/losses included in our condensed consolidated income statements for the three and nine months ended September 30, 2018 and 2017 were insignificant, unless otherwise noted. (b) The fair value of the PSA warrants located in Other assets was $1.1 billion and $764 million at September 30, 2018 and December 31, 2017 . We recorded gains in Interest income and other non-operating income, net of $171 million and an insignificant amount in the three months ended September 30, 2018 and 2017 and $324 million and an insignificant amount in the nine months ended September 30, 2018 and 2017 . 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. The estimated dividend yield is adjusted based on the terms of the Master Agreement with PSA Group dated March 5, 2017 (the Agreement). Refer to Exhibit 2.1 of our 2017 Form 10-K for additional details. Under the terms of the Agreement upon exercise of the warrants we are entitled to receive any dividends by PSA between the issuance date and the conversion date. GM Financial The following table presents the notional amounts of GM Financial's derivative financial instruments: Fair Value Level September 30, 2018 December 31, 2017 Derivatives designated as hedges(a) Fair value hedges – interest rate contracts(b)(c) 2 $ 10,510 $ 11,110 Cash flow hedges Interest rate contracts 2 905 2,177 Foreign currency 2 2,108 1,574 Derivatives not designated as hedges(a) Interest rate contracts(c)(d) 2 93,162 81,938 Foreign currency 2 1,858 1,201 Total derivative financial instruments $ 108,543 $ 98,000 __________ (a) The fair value of these derivative instruments at September 30, 2018 and December 31, 2017 and the gains/losses included in our condensed consolidated income statements and statements of comprehensive income for the three and nine months ended September 30, 2018 and 2017 were insignificant, unless otherwise noted. (b) The fair value of these derivative instruments located in Other liabilities was $510 million and $290 million at September 30, 2018 and December 31, 2017 . The fair value of these derivative instruments located in Other assets was insignificant at September 30, 2018 and December 31, 2017 . (c) 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. (d) The fair value of these derivative instruments located in Other assets was $551 million and $329 million at September 30, 2018 and December 31, 2017 . The fair value of these derivative instruments located in Other liabilities was $670 million and $207 million at September 30, 2018 and December 31, 2017 . 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 condensed consolidated balance sheet related to items designated and qualifying as hedged items in fair value hedging relationships: September 30, 2018 Carrying Amount of Hedged Items Cumulative Amount of Fair Value Hedging Adjustments(a) GM Financial long-term debt $ 15,363 $ 735 __________ (a) Includes $178 million of adjustments remaining on hedged items for which hedge accounting has been discontinued.

Product Warranty and Related Li

Product Warranty and Related Liabilities	9 Months Ended
	Sep. 30, 2018
Product Warranties Disclosures [Abstract]
Product Warranty and Related Liabilities	Product Warranty and Related Liabilities Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Warranty balance at beginning of period $ 7,990 $ 8,890 $ 8,332 $ 9,069 Warranties issued and assumed in period – recall campaigns 101 173 515 527 Warranties issued and assumed in period – product warranty 542 481 1,599 1,586 Payments (723 ) (787 ) (2,175 ) (2,382 ) Adjustments to pre-existing warranties (209 ) (317 ) (426 ) (405 ) Effect of foreign currency and other (8 ) 39 (152 ) 84 Warranty balance at end of period $ 7,693 $ 8,479 $ 7,693 $ 8,479 We estimate our reasonably possible loss in excess of amounts accrued for recall campaigns to be insignificant at September 30, 2018 . Refer to Note 14 for reasonably possible losses on Takata Corporation (Takata) matters.

Pensions and Other Postretireme

Pensions and Other Postretirement Benefits	9 Months Ended
	Sep. 30, 2018
Retirement Benefits [Abstract]
Pensions and Other Postretirement Benefits	Pensions and Other Postretirement Benefits Three Months Ended September 30, 2018 Three Months Ended September 30, 2017 Pension Benefits Global OPEB Plans Pension Benefits Global OPEB Plans U.S. Non-U.S. U.S. Non-U.S. Service cost $ 83 $ 33 $ 5 $ 79 $ 45 $ 4 Interest cost 513 112 49 536 115 51 Expected return on plan assets (972 ) (201 ) — (919 ) (185 ) — Amortization of prior service cost (credit) (1 ) 1 (4 ) (1 ) 2 (3 ) Amortization of net actuarial (gains) losses 2 35 14 (2 ) 29 8 Curtailments, settlements and other — 18 — — — — Net periodic pension and OPEB (income) expense $ (375 ) $ (2 ) $ 64 $ (307 ) $ 6 $ 60 Nine Months Ended September 30, 2018 Nine Months Ended September 30, 2017 Pension Benefits Global OPEB Plans Pension Benefits Global OPEB Plans U.S. Non-U.S. U.S. Non-U.S. Service cost $ 248 $ 138 $ 15 $ 237 $ 131 $ 14 Interest cost 1,538 349 147 1,608 366 149 Expected return on plan assets (2,917 ) (621 ) — (2,757 ) (528 ) — Amortization of prior service cost (credit) (3 ) 3 (11 ) (3 ) 4 (10 ) Amortization of net actuarial (gains) losses 7 109 40 (5 ) 124 24 Curtailments, settlements and other — 18 — — — — Net periodic pension and OPEB (income) expense $ (1,127 ) $ (4 ) $ 191 $ (920 ) $ 97 $ 177 The non-service cost components of the net periodic pension and OPEB income of $401 million and $369 million in the three months ended September 30, 2018 and 2017 and $1.2 billion and $1.0 billion in the nine months ended September 30, 2018 and 2017 are presented in Interest income and other non-operating income, net. We used the practical expedient for retrospective presentation of the 2017 non-service cost components in this disclosure. Refer to Note 1 for additional details on the adoption of ASU 2017-07. We expect to contribute approximately $1.6 billion to our non-U.S. pension plans in 2018, inclusive of $584 million in contributions to pre-fund U.K. and Canada pension plans in the three months ended September 30, 2018 and approximately $300 million in payments of pension obligations for separated employees in Korea. Refer to Note 16 for additional information on the Korea payments.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
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 September 30, 2018 and December 31, 2017 we had accruals of $1.4 billion and $ 930 million in Accrued liabilities and Other liabilities. The increase is due primarily to matters related to the ignition switch recall. 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. Economic-Loss Claims We are aware of over 100 putative class actions pending against GM in U.S. and Canadian courts alleging that consumers who purchased or leased vehicles manufactured by GM or Motors Liquidation Company (formerly known as General Motors Corporation) 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 Motors Liquidation Company. The Southern District has dismissed various of these claims, including claims under the Racketeer Influenced and Corrupt Organization Act, claims for recovery for alleged reduction in the value of plaintiffs' vehicles due to damage to GM’s reputation and brand as a result of the ignition switch matter, and claims of certain plaintiffs who purchased a vehicle before GM came into existence in July 2009. The Southern District also dismissed certain state law claims at issue. 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 successor liability claims of plaintiffs 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. Significant summary judgment, class certification, and expert evidentiary motions remain at issue. Personal Injury Claims We also are aware of several hundred actions 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 (personal injury cases). In general, these cases seek recovery for purported compensatory damages, punitive damages and/or other relief. Since 2016, several bellwether trials of personal injury cases have taken place in the Southern District and in a Texas state court, which is administering a Texas state multi-district litigation (MDL). None of these trials resulted in a finding of liability against GM. We are currently preparing for two additional bellwether trials in the MDL pending in the Southern District. Appellate Litigation Regarding Successor Liability Ignition Switch Claims In 2016, the United States Court of Appeals for the Second Circuit held that the 2009 order of the U.S. Bankruptcy Court for the Southern District of New York (Bankruptcy Court) approving the sale of substantially all of the assets of Motors Liquidation Company to GM free and clear of, among other things, claims asserting successor liability for obligations owed by Motors Liquidation Company (successor liability claims) 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. Contingently Issuable Shares Under the Amended and Restated Master Sale and Purchase Agreement between us and Motors Liquidation Company GM may be obligated to issue additional shares (Adjustment Shares) of our common stock if allowed general unsecured claims against the Motors Liquidation Company GUC Trust (GUC Trust), as estimated by the Bankruptcy Court, exceed $35.0 billion . The maximum number of Adjustment Shares issuable is 30 million shares (subject to adjustment to take into account stock dividends, stock splits and other transactions), which amounts to approximately $1.0 billion based on the GM share price as of October 12, 2018 . The GUC Trust stated in public filings that allowed general unsecured claims were approximately $31.9 billion as of June 30, 2018. In 2016 and 2017 certain personal injury and economic loss plaintiffs filed motions in the Bankruptcy Court seeking authority to file late claims against the GUC Trust. In May 2018, the GUC Trust filed motions seeking the Bankruptcy Court’s approval of a proposed settlement with certain personal injury and economic loss plaintiffs, approval of a notice relating to that proposed settlement and estimation of alleged personal injury and economic loss late claims for the purpose of obtaining an order requiring GM to issue the maximum number of Adjustment Shares. GM vigorously contested each of these motions. In September 2018 the Bankruptcy Court denied without prejudice the GUC Trust’s motions described above, finding that the settling parties first need to obtain class certification with respect to the economic loss late claims. The GUC Trust and certain plaintiffs may again attempt to obtain the maximum number of Adjustment Shares through another proposed settlement. We are unable to estimate any reasonably possible loss or range of loss that may result from this matter. Securities and Derivative Matter s In a putative shareholder class action filed in the United States District Court for the Eastern District of Michigan (Eastern District) on behalf of purchasers of our common stock from November 17, 2010 to July 24, 2014, the lead plaintiff alleged that GM and several current and former officers and employees made material misstatements and omissions relating to problems with the ignition switch and other matters in SEC filings and other public statements. In 2016 the Eastern District entered a judgment approving a class-wide settlement of the class action for $300 million . One shareholder filed an appeal of the decision approving the settlement. The United States Court of Appeals for the Sixth Circuit affirmed the judgment approving the settlement in November 2017. The objector subsequently filed petitions for rehearing and for en banc review before the entire Sixth Circuit. Both of those petitions were denied. The U.S. Supreme Court subsequently denied the objector's petition seeking appellate review. 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. In March 2018, we conclusively resolved a civil action initiated by the Arizona Attorney General. 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. Deferred Prosecution Agreement In September 2015, GM entered into the Deferred Prosecution Agreement (DPA) with the U.S. Attorney's Office of the Southern District of New York (U.S. Attorney's Office) regarding its investigation of the events leading up to certain recalls regarding faulty ignition switches. Pursuant to the DPA we paid the United States $900 million as a financial penalty, and we agreed to retain an independent monitor to review and assess our policies, practices or procedures related to statements about motor vehicle safety, the provision of information to those responsible for recall decisions, recall processes and addressing known defects in certified pre-owned vehicles. In September 2018, the monitor completed his three-year term and the U.S. Attorney's Office filed a motion with the Southern District, seeking dismissal with prejudice of the two-count information. The Southern District granted the motion on September 19, 2018, dismissing the charges with prejudice. The total amount accrued for the 2014 recalls at September 30, 2018 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 believe it is probable that we will incur additional liabilities beyond what has already been accrued for at least a portion of the remaining matters, whether through settlement or judgment; however, we are currently unable to estimate an overall amount or range of loss because these matters involve significant uncertainties, including the legal theory or the nature of the investigations, claims and/or lawsuits, the complexity of the facts, the lack of documentation available to us with respect to particular cases or groups of cases, the results of any investigation or litigation and the timing of resolution of the investigation or litigations, including any appeals. 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 (Supreme Court). In 2014, the Supreme Court largely agreed with GM’s legal arguments and remanded the case to the Seoul High Court for consideration consistent with earlier 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 Supreme Court. The Supreme Court has not yet rendered a decision. We estimate our reasonably possible loss in excess of amounts accrued to be approximately $580 million at September 30, 2018 . 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 framework change. 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 Supreme Court. The Supreme Court has not yet rendered a decision. We estimate our reasonably possible loss in excess of amounts accrued to be approximately $160 million at September 30, 2018 . 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 framework 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 the Korean government issued an adverse ruling finding that GM Korea must hire certain current subcontract workers as full-time employees. GM Korea intends to appeal that decision. At September 30, 2018 , we recorded an insignificant accrual covering certain asserted claims and claims that we believe are probable of assertion and for which liability is probable. We estimate that the reasonably possible loss in excess of amounts accrued for other current subcontract workers who may assert similar claims to be approximately $150 million at September 30, 2018 . 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 March 2017 the Supreme Court of Brazil issued a decision concluding that a certain state value added tax should not be included in the calculation of federal gross receipts taxes. The decision reduces GM Brazil’s gross receipts tax prospectively and, potentially, retrospectively. The retrospective right to recover is under judicial review, and a decision for part of the claim could be rendered as soon as the end of 2018. If the Judicial Court grants retrospective recovery, we estimate potential recoveries of up to $1.2 billion . However, given the remaining uncertainty regarding the judicial resolution of this matter we are unable to assess the likelihood of any favorable outcome at this time. We have not recorded any amounts relating to the retrospective nature of this matter. 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, including CO 2 and nitrogen oxide, fuel economy, and related governmental regulations; product warranties; financial services; dealer, supplier and other contractual relationships; government regulations relating to payments to foreign companies; government regulations relating to competition issues; tax-related matters not subject to the provision of ASC 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. 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 and state emission standards. GM has also faced a series of additional lawsuits based primarily on allegations in the Duramax suit, including putative shareholder class actions claiming violations of federal securities law and a shareholder demand lawsuit. The securities lawsuits have been voluntarily dismissed. At this stage of these proceedings, we are unable to provide an evaluation of the likelihood that a loss will be incurred or an estimate of the amounts or range of possible loss. 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 which may range from $200 million to $500 million at September 30, 2018 . 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 September 30, 2018 . 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 $900 million at September 30, 2018 . Takata Matters In May 2016 the National Highway Traffic Safety Administration (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. Although we do not believe there is a safety defect at this time in any unrecalled GM vehicles within scope of the Takata DIRs, in cooperation with NHTSA we have filed Preliminary DIRs covering certain of our GMT900 vehicles, which are full-size pickup trucks and sport utility vehicles (SUVs). We have also filed petitions for inconsequentiality with respect to the vehicles subject to those Preliminary DIRs. NHTSA has consolidated our petitions and will rule on them at the same time. While these petitions have been pending, we have provided NHTSA with the results of our long-term studies and the studies performed by third-party experts, all of which form the basis for our determination that the inflators in these vehicles do not present an unreasonable risk to safety and that no repair should ultimately be required. We believe these vehicles are currently performing as designed and ongoing testing continues to support the belief that the vehicles' unique design and integration mitigates against inflator propellant degradation and rupture risk. For example, the airbag inflators used in the vehicles are a variant engineered specifically for our vehicles, and include features such as greater venting, unique propellant wafer configurations, and machined steel end caps. The inflators are packaged in the instrument panel in such a way as to minimize exposure to moisture from the climate control system. Also, these vehicles have features that minimize the maximum temperature to which the inflator will be exposed, such as larger interior volumes and standard solar absorbing windshields and side glass. Accordingly, no warranty provision has been made for any repair associated with our vehicles subject to the Preliminary DIRs and amended consent order. However, in the event we are ultimately obligated to repair the vehicles subject to current or future Takata DIRs under the amended consent order in the U.S., we estimate a reasonably possible impact to GM of approximately $1.2 billion . 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. Through October 15, 2018 we are aware of three putative class actions pending against GM in federal court in the U.S., one putative class action in Mexico and three putative class actions pending in various Provincial Courts in Canada arising out of allegations that airbag inflators manufactured by Takata are defective. At this early stage of these proceedings, we are unable to provide an evaluation of the likelihood that a loss will be incurred or an estimate of the amounts or range of possible loss. Product Liability With respect to product liability claims (other than claims relating to the ignition switch recalls discussed above) involving our and General Motors Corporation products, we believe that any judgment against us for actual damages will be adequately covered by our recorded accruals and, where applicable, excess liability insurance coverage. In addition we indemnify dealers for certain product liability related claims including products sold by General Motors Corporation's dealers. At September 30, 2018 and December 31, 2017 liabilities of $557 million and $595 million were recorded in Accrued liabilities and Other liabilities 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. Guarantees We enter into indemnification agreements for liability claims involving products manufactured primarily by certain joint ventures. These guarantees terminate in years ranging from 2018 to 2032 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 liability, calculated as future undiscounted payments, was $6.0 billion and $5.1 billion for these guarantees at September 30, 2018 and December 31, 2017 , the majority of which relate to the indemnification agreements. We provide vehicle repurchase guarantees and payment guarantees on commercial loans outstanding with third parties such as dealers. In some instances certain assets of the party whose debt or performance we have guaranteed may offset, to some degree, the amount of certain guarantees. Our payables to the party whose debt or performance we have guaranteed may also reduce the amount of certain guarantees. If vehicles are required to be repurchased under vehicle repurchase obligations, the total exposure would be reduced to the extent vehicles are able to be resold to another dealer. 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 19 for additional information on our indemnification obligations to PSA Group under the Agreement.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For interim income tax reporting we estimate our annual effective tax rate and apply it to our year to date ordinary income (loss). Tax jurisdictions with a projected or year to date loss for which a tax benefit cannot be realized are excluded. The tax effects of unusual or infrequently occurring items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, are reported in the interim period in which they occur. We have open tax years from 2008 to 2017 with various significant tax jurisdictions. In the three months ended September 30, 2018 Income tax expense of $100 million primarily resulted from tax expense attributable to entities included in our effective tax rate calculation, partially offset by a $157 million tax benefit from U.S. tax reform. In the three months ended September 30, 2017 Income tax expense of $2.3 billion primarily resulted from tax expense attributable to entities included in our effective tax rate calculation of $583 million including tax benefits from foreign dividends and $2.3 billion related to the establishment of a valuation allowance on deferred tax assets that will no longer be realizable as a result of the sale of the Opel/Vauxhall Business as described in Note 19 , partially offset by tax benefits related to tax settlements. In the nine months ended September 30, 2018 Income tax expense of $1.1 billion primarily resulted from tax expense attributable to entities included in our effective tax rate calculation, partially offset by a $157 million tax benefit from U.S. tax reform. In the nine months ended September 30, 2017 Income tax expense of $3.6 billion primarily resulted from tax expense attributable to entities included in our effective tax rate calculation of $2.1 billion including tax benefits from foreign dividends and $2.3 billion related to the establishment of a valuation allowance on deferred tax assets that will no longer be realizable as a result of the sale of the Opel/Vauxhall Business as described in Note 19 , partially offset by tax benefits related to tax settlements. At September 30, 2018 we had $22.4 billion of net deferred tax assets consisting of net operating losses and income tax credits, capitalized research expenditures and other timing differences that are available to offset future income tax liabilities, partially offset by valuation allowances. We have $3.3 billion of net operating loss carryforwards in Germany that, as a result of reorganizations that took place in 2008 and 2009, are not currently recorded as deferred tax assets. As a result of a final European court decision in June 2018 and subject to final German statutory approval, we anticipate that these loss carryforwards may become available to reduce future taxable income in Germany. If this were to occur, deferred tax assets totaling $1.0 billion would be established for the loss carryforwards, and offsetting valuation allowances would also be established because the deferred tax assets would not meet the more likely than not realizability standard. The Tax Act was signed into law on December 22, 2017. The Tax Act changed many aspects of U.S. corporate income taxation and included reduction of the corporate income tax rate from 35% to 21% , implementation of a territorial tax system and imposition of a tax on deemed repatriated earnings of foreign subsidiaries. We recognized the tax effects of the Tax Act in the three months ended December 31, 2017 and recorded $7.3 billion in tax expense. The tax expense relates almost entirely to the remeasurement of deferred tax assets to the 21% tax rate. In the three months ended September 30, 2018 we filed our 2017 U.S. federal income tax return and updated our year ended December 31, 2017 estimated tax expense of $7.3 billion to $7.1 billion , primarily related to the remeasurement of deferred tax assets to the 21% tax rate. We will continue to assess our provision for income taxes as future guidance is issued but do not anticipate significant revisions will be necessary. Any such revisions will be treated in accordance with the measurement period guidance outlined in Staff Accounting Bulletin No. 118.

Restructuring and Other Initiat

Restructuring and Other Initiatives	9 Months Ended
	Sep. 30, 2018
Restructuring and Related Activities [Abstract]
Restructuring and Other Initiatives	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 other costs to improve the utilization of remaining facilities. To the extent these programs involve voluntary separations, no liabilities are generally recorded until offers to employees are accepted. 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: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Balance at beginning of period $ 274 $ 493 $ 227 $ 268 Additions, interest accretion and other 8 43 600 333 Payments (72 ) (75 ) (567 ) (150 ) Revisions to estimates and effect of foreign currency (3 ) (7 ) (53 ) 3 Balance at end of period $ 207 $ 454 $ 207 $ 454 In the nine months ended September 30, 2018 restructuring and other initiatives primarily included the closure of a facility and other restructuring actions in Korea. We recorded charges of $1.0 billion related to Korea in GMI, net of noncontrolling interests in the nine months ended September 30, 2018 . 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, in the nine months ended September 30, 2018 . We incurred $748 million in cash outflows resulting from these Korea restructuring actions primarily for employee separations and statutory pension payments in the nine months ended September 30, 2018. In the nine months ended September 30, 2017 restructuring and other initiatives primarily included restructuring actions announced in the three months ended June 30, 2017 in GMI. These actions related primarily to the withdrawal of Chevrolet from the Indian and South African markets at the end of 2017 and the transition of our South Africa manufacturing operations to Isuzu Motors. We continue to manufacture vehicles in India for sale to certain export markets. We recorded charges of $460 million in GMI primarily consisting of $297 million of asset impairments, sales incentives, inventory provisions and other charges, not reflected in the table above, and $163 million of dealer restructurings, employee separations and other contract cancellation costs, which are reflected in the table above. We completed these programs in GMI in 2017. Other GMI restructuring programs reflected in the table above include separation and other programs in Australia, Korea and India and the withdrawal of the Chevrolet brand from Europe. Collectively, these programs had a total cost since inception in 2013 of $883 million through September 30, 2017 and $892 million through the completion of the programs in the year ended December 31, 2017 .

Stockholders' Equity and Noncon

Stockholders' Equity and Noncontrolling Interests	9 Months Ended
	Sep. 30, 2018
Stockholders' Equity Note [Abstract]
Stockholders' Equity and Noncontrolling Interests	Stockholders' Equity and Noncontrolling Interests We had 2.0 billion shares of preferred stock and 5.0 billion shares of common stock authorized for issuance and 1.4 billion shares of common stock issued and outstanding at September 30, 2018 and December 31, 2017 . In the nine months ended September 30, 2018 and 2017 we purchased three million and 86 million shares of our outstanding common stock for $100 million and $3.0 billion as 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. Our total dividends paid on common stock were $537 million and $546 million in the three months ended September 30, 2018 and 2017 and $1.6 billion and $1.7 billion in the nine months ended September 30, 2018 and 2017 . In September 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. The preferred stock is classified as noncontrolling interests on our condensed consolidated financial statements. Dividends will be paid semi-annually when declared starting March 30, 2019 at a fixed rate of 6.50% . In September 2017 GM Financial issued $1.0 billion of Fixed-to-Floating Rate Cumulative Perpetual Preferred Stock, Series A, $0.01 par value, with a liquidation preference of $1,000 per share. The preferred stock is classified as noncontrolling interests on our condensed consolidated financial statements. Dividends are paid semi-annually when declared, which started March 30, 2018 at a fixed rate of 5.75% . GM Cruise Preferred Shares On May 31, 2018, we entered into a Purchase Agreement with SoftBank Vision Fund (AIV M1), L.P. (The Vision Fund). The Vision Fund subsequently assigned its rights and obligations under the Purchase Agreement to SoftBank Investment Holdings (UK) Limited (SoftBank). In June 2018, at the closing of the transactions contemplated by the Purchase Agreement, GM Cruise Holdings LLC (GM Cruise Holdings), our subsidiary, issued $900 million of convertible preferred shares (GM Cruise Preferred Shares) to SoftBank, representing 10.9% of GM Cruise Holdings' equity at closing. Immediately prior to the issuance of the GM Cruise Preferred Shares, we invested $1.1 billion in GM Cruise Holdings. When GM Cruise's autonomous vehicles are ready for commercial deployment, SoftBank is obligated to purchase additional GM Cruise Preferred Shares for $1.35 billion . All proceeds are designated exclusively for working capital and general corporate purposes of GM Cruise. Dividends are cumulative and accrue at an annual rate of 7% and are payable quarterly in cash or in-kind, at GM Cruise's discretion. The GM Cruise Preferred Shares are also entitled to participate in GM Cruise dividends above a defined threshold. Prior to an initial public offering, SoftBank is restricted from transferring the GM Cruise Preferred Shares until June 28, 2025. The GM Cruise Preferred Shares are convertible into common stock of GM Cruise Holdings, at specified exchange ratios, at the option of SoftBank or upon occurrence of an initial public offering. The GM Cruise 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 GM Cruise Holdings. Beginning on June 28, 2025, SoftBank has the option to convert all of the GM Cruise Preferred Shares into our common stock at a conversion ratio that is indexed to the fair value of GM Cruise Holdings at the time of conversion. We have the option to settle the conversion feature with our common shares or cash, and in certain situations with nonredeemable, nonconvertible preferred shares. Beginning on June 28, 2025, we can call all, but not less than all of the GM Cruise Preferred Shares held by SoftBank at an amount equal to the greater of the original investment amount plus accrued distributions paid in-kind and the fair value of GM Cruise Holdings at the time of conversion. The GM Cruise Preferred Shares are classified as noncontrolling interests in our condensed consolidated financial statements. GM Korea Preferred Shares In May 2018 the Korea Development Bank (KDB) agreed to purchase approximately $750 million of GM Korea’s Class B Preferred Shares from GM Korea (GM Korea Preferred Shares), $361 million of which was received in June 2018 with the remainder currently expected to be received in the three months ending December 31, 2018. Dividends on the GM Korea Preferred Shares are cumulative and accrue at an annual rate of 1% . 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 condensed 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: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Foreign Currency Translation Adjustments Balance at beginning of period $ (1,826 ) $ (2,162 ) $ (1,606 ) $ (2,355 ) Other comprehensive income (loss) and noncontrolling interests, net of reclassification adjustment, tax and impact of adoption of accounting standards(a)(b)(c) (215 ) 370 (435 ) 563 Balance at end of period $ (2,041 ) $ (1,792 ) $ (2,041 ) $ (1,792 ) Defined Benefit Plans Balance at beginning of period $ (6,290 ) $ (7,208 ) $ (6,398 ) $ (6,968 ) Other comprehensive income (loss) before reclassification adjustment, net of tax and impact of adoption of accounting standards(b)(c) (4 ) 87 16 (256 ) Reclassification adjustment, net of tax(b)(d) 63 1,126 151 1,229 Other comprehensive income, net of tax and impact of adoption of accounting standards(b)(c) 59 1,213 167 973 Balance at end of period(e) $ (6,231 ) $ (5,995 ) $ (6,231 ) $ (5,995 ) __________ (a) The noncontrolling interests and reclassification adjustment were insignificant in the three and nine months ended September 30, 2018 and 2017 . (b) The income tax effect was insignificant in the three and nine months ended September 30, 2018 and 2017 . (c) Refer to Note 1 for additional information on adoption of accounting standards in 2018. (d) $1.2 billion is included in the loss on sale of the Opel/Vauxhall Business in the three and nine months ended September 30, 2017. An insignificant amount is included in the computation of periodic pension and OPEB (income) expense in the three and nine months ended September 30, 2017. (e) Consists primarily of unamortized actuarial loss on our defined benefit plans. Refer to the critical accounting estimates section of our 2017 Form 10-K for additional information.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Basic earnings per share Income from continuing operations(a) $ 2,534 $ 115 $ 6,040 $ 5,222 Less: cumulative dividends on subsidiary preferred stock (31 ) (2 ) (60 ) (2 ) Income from continuing operations attributable to common stockholders 2,503 113 5,980 5,220 Loss from discontinued operations, net of tax — 3,096 70 3,935 Net income (loss) attributable to common stockholders $ 2,503 $ (2,983 ) $ 5,910 $ 1,285 Weighted-average common shares outstanding 1,412 1,445 1,410 1,483 Basic earnings per common share – continuing operations $ 1.77 $ 0.08 $ 4.24 $ 3.52 Basic loss per common share – discontinued operations $ — $ 2.14 $ 0.05 $ 2.65 Basic earnings (loss) per common share $ 1.77 $ (2.06 ) $ 4.19 $ 0.87 Diluted earnings per share Income from continuing operations attributable to common stockholders – diluted(a) $ 2,503 $ 113 $ 5,980 $ 5,220 Loss from discontinued operations, net of tax – diluted $ — $ 3,096 $ 70 $ 3,935 Net income (loss) attributable to common stockholders – diluted $ 2,503 $ (2,983 ) $ 5,910 $ 1,285 Weighted-average common shares outstanding – basic 1,412 1,445 1,410 1,483 Dilutive effect of warrants and awards under stock incentive plans 19 27 21 24 Weighted-average common shares outstanding – diluted 1,431 1,472 1,431 1,507 Diluted earnings per common share – continuing operations $ 1.75 $ 0.08 $ 4.18 $ 3.46 Diluted loss per common share – discontinued operations $ — $ 2.11 $ 0.05 $ 2.61 Diluted earnings (loss) per common share $ 1.75 $ (2.03 ) $ 4.13 $ 0.85 Potentially dilutive securities(b) 4 6 4 6 __________ (a) Net of Net (income) loss attributable to noncontrolling interests. (b) Potentially dilutive securities attributable to outstanding stock options and Restricted Stock Units (RSUs) were excluded from the computation of diluted earnings per share (EPS) because the securities would have had an antidilutive effect.

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations On March 5, 2017 we entered into the Agreement to sell our European Business to PSA Group. On July 31, 2017 we closed the sale of our Opel/Vauxhall Business to PSA Group, and on October 31, 2017 we closed the sale of the Fincos to Banque PSA Finance S.A. and BNP Paribas Personal Finance S.A. The net consideration paid at closing for the Opel/Vauxhall Business was $1.4 billion , consisting of (1) $1.1 billion in cash; and (2) $808 million in warrants in PSA Group; partially offset by (3) a $478 million de-risking premium payment made to PSA Group for assuming certain underfunded pension liabilities. During the three months ended September 30, 2017, our wholly owned subsidiary (the Seller) made payments to PSA Group, or one or more pension funding vehicles, of $3.4 billion with respect to net underfunded pension liabilities assumed by PSA Group, which included pension funding payments for active employees and the de-risking premium payment of $478 million . For a further description of the terms and conditions refer to Note 3 of our 2017 Form 10-K. The total charge from the sale of the European Business was $6.2 billion , net of tax. During the three months ended September 30, 2017 we recognized a charge of $5.4 billion , of which $3.1 billion was recorded in Loss from discontinued operations, net of tax and $2.3 billion was recorded in Income tax expense, as a result of the sale of the Opel/Vauxhall Business. During the three months ended June 30, 2017 we recognized charges in Loss from discontinued operations, net of tax of $421 million for the cancellation of product programs resulting from the convergence of vehicle platforms between our European Business and PSA Group, a disposal loss of $324 million as a result of the Fincos being classified as held for sale and other insignificant charges. 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. The Company entered into a guarantee for the benefit of PSA Group pursuant to which the Company 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 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) recently issued an order converting Opel’s voluntary recall of certain vehicles with emission control systems into a mandatory recall for allegedly failing to comply with certain emissions regulations. In addition, at the KBA's request the German authorities recently re-opened a separate investigation that had previously been closed with no action. Opel is challenging the order of the KBA in court on the grounds that the emission control systems complied with the applicable regulations at the time the vehicles were manufactured, tested and sold. Opel voluntarily recalled and serviced many of these vehicles between 2017 and 2018 at its own expense, and this expense should not be transferred to the Seller because it was accounted for at the time of the sale. However, the Seller may be obligated to indemnify PSA Group for certain additional expenses resulting from the mandatory recall and related investigation, including potential litigation costs, settlements, judgments and potential fines. We are unable to estimate any reasonably possible loss or range of loss that may result from this matter. We continue to purchase from and supply to PSA Group certain vehicles for a period of time following closing. Total net sales and revenue of $339 million and $1.5 billion and purchases and expenses of $297 million and $1.1 billion related to transactions with the Opel/Vauxhall Business were included in continuing operations during the three and nine months ended September 30, 2018 . Cash payments of $1.5 billion and cash receipts of $1.9 billion were recorded in Net cash provided by (used in) operating activities – continuing operations related to transactions with the Opel/Vauxhall Business during the nine months ended September 30, 2018 . The following table summarizes the results of the European Business operations: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Automotive net sales and revenue $ — $ 1,553 $ — $ 11,257 GM Financial net sales and revenue — 147 — 414 Total net sales and revenue — 1,700 — 11,671 Automotive and other cost of sales — 1,583 — 11,049 GM Financial interest, operating and other expenses — 99 — 301 Automotive and other selling, general, and administrative expense — 134 — 813 Other expense items — 74 — 72 Loss from discontinued operations before taxes — 190 — 564 Loss on sale of discontinued operations before taxes(a) — 1,150 70 1,986 Total loss from discontinued operations before taxes — 1,340 70 2,550 Income tax expense(a)(b) — 1,756 — 1,385 Loss from discontinued operations, net of tax $ — $ 3,096 $ 70 $ 3,935 __________ (a) Total loss on sale of discontinued operations, net of tax was $3.1 billion and $3.7 billion for the three and nine months ended September 30, 2017. (b) Includes $2.0 billion of deferred tax assets that transferred to PSA Group in the three and nine months ended September 30, 2017.

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting We report segment information consistent with the way the chief operating decision maker evaluates the operating results and performance of the Company. As a result of the growing importance of our autonomous vehicle operations, we moved these operations from Corporate to GM Cruise and began presenting GM Cruise as a new reportable segment in the three months ended June 30, 2018. Our GMNA, GMI and GM Financial segments were not significantly impacted. All periods presented have been recast to reflect the changes. We analyze the results of our business through the following segments: GMNA, GMI, GM Cruise and GM Financial. As discussed in Note 1 , 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 (GME) segment and part of GM Financial. The chief operating decision maker evaluates the operating results and performance of our automotive segments and GM Cruise through earnings before interest and taxes (EBIT)-adjusted, which is presented net of noncontrolling interests. The chief operating decision maker evaluates GM Financial through earnings before income taxes-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 cars, trucks, crossovers 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, cars, trucks and crossovers 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, Jiefang and Wuling brands. GM Cruise is our global segment designed to build, grow and invest in our autonomous ride-sharing vehicle business, and includes autonomous vehicle-related engineering and other costs. Our automotive operations' interest income and interest expense, Maven, 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 consist primarily of cash and cash equivalents, marketable securities, our investment in Lyft, Inc. (Lyft), PSA warrants, Maven vehicles 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 Three Months Ended September 30, 2018 GMNA GMI Corporate Eliminations Total Automotive GM Cruise GM Financial Eliminations Total Net sales and revenue $ 27,650 $ 4,582 $ 56 $ 32,288 $ — $ 3,518 $ (15 ) $ 35,791 Earnings (loss) before interest and taxes-adjusted $ 2,825 $ 139 $ (94 ) $ 2,870 $ (214 ) $ 498 $ (1 ) $ 3,153 Adjustments(a) $ — $ — $ (440 ) $ (440 ) $ — $ — $ — (440 ) Automotive interest income 82 Automotive interest expense (161 ) Net (loss) attributable to noncontrolling interests (4 ) Income before income taxes 2,630 Income tax expense (100 ) Income from continuing operations 2,530 Loss from discontinued operations, net of tax — Net loss attributable to noncontrolling interests 4 Net income attributable to stockholders $ 2,534 Equity in net assets of nonconsolidated affiliates $ 77 $ 7,770 $ — $ — $ 7,847 $ — $ 1,308 $ — $ 9,155 Goodwill and intangibles $ 2,674 $ 939 $ 2 $ — $ 3,615 $ 679 $ 1,357 $ — $ 5,651 Total assets $ 110,245 $ 25,780 $ 28,194 $ (45,323 ) $ 118,896 $ 2,567 $ 105,658 $ (1,410 ) $ 225,711 Depreciation and amortization $ 1,251 $ 136 $ 12 $ — $ 1,399 $ 2 $ 1,904 $ — $ 3,305 Impairment charges $ — $ 2 $ 6 $ — $ 8 $ — $ — $ — $ 8 Equity income $ 2 $ 484 $ — $ — $ 486 $ — $ 44 $ — $ 530 __________ (a) Consists of charges for ignition switch related legal matters. At and For the Three Months Ended September 30, 2017 GMNA GMI Corporate Eliminations Total GM Cruise GM Eliminations Total Net sales and revenue $ 24,819 $ 5,576 $ 80 $ 30,475 $ — $ 3,161 $ (13 ) $ 33,623 Earnings (loss) before interest and taxes-adjusted $ 2,068 $ 389 $ (77 ) $ 2,380 $ (165 ) $ 310 $ (2 ) $ 2,523 Adjustments $ — $ — $ — $ — $ — $ — $ — — Automotive interest income 59 Automotive interest expense (151 ) Net (loss) attributable to noncontrolling interests (1 ) Income before income taxes 2,430 Income tax expense (2,316 ) Income from continuing operations 114 Loss from discontinued operations, net of tax (3,096 ) Net loss attributable to noncontrolling interests 1 Net loss attributable to stockholders $ (2,981 ) Equity in net assets of nonconsolidated affiliates $ 82 $ 7,619 $ — $ — $ 7,701 $ — $ 1,119 $ — $ 8,820 Goodwill and intangibles $ 2,871 $ 980 $ 12 $ — $ 3,863 $ 620 $ 1,371 $ — $ 5,854 Total assets(a) $ 109,934 $ 27,832 $ 25,797 $ (39,731 ) $ 123,832 $ 564 $ 106,142 $ (1,036 ) $ 229,502 Depreciation and amortization $ 1,210 $ 166 $ 11 $ — $ 1,387 $ — $ 1,743 $ — $ 3,130 Impairment charges $ 10 $ 7 $ — $ — $ 17 $ — $ — $ — $ 17 Equity income $ 2 $ 457 $ — $ — $ 459 $ — $ 41 $ — $ 500 __________ (a) Assets in GM Financial include assets classified as held for sale. At and For the Nine Months Ended September 30, 2018 GMNA GMI Corporate Eliminations Total GM Cruise GM Eliminations Total Net sales and revenue $ 83,969 $ 14,188 $ 155 $ 98,312 $ — $ 10,417 $ (79 ) $ 108,650 Earnings (loss) before interest and taxes-adjusted $ 7,728 $ 471 $ (187 ) $ 8,012 $ (534 ) $ 1,477 $ — $ 8,955 Adjustments(a) $ — $ (1,138 ) $ (440 ) $ (1,578 ) $ — $ — $ — (1,578 ) Automotive interest income 218 Automotive interest expense (470 ) Net (loss) attributable to noncontrolling interests (34 ) Income before income taxes 7,091 Income tax expense (1,085 ) Income from continuing operations 6,006 Loss from discontinued operations, net of tax (70 ) Net loss attributable to noncontrolling interests 34 Net income attributable to stockholders $ 5,970 Depreciation and amortization $ 3,474 $ 426 $ 36 $ — $ 3,936 $ 5 $ 5,560 $ — $ 9,501 Impairment charges $ 53 $ 463 $ 6 $ — $ 522 $ — $ — $ — $ 522 Equity income $ 7 $ 1,667 $ — $ — $ 1,674 $ — $ 141 $ — $ 1,815 __________ (a) Consists of charges of $1.1 billion related to restructuring actions in Korea in GMI, which is net of noncontrolling interest, and charges of $440 million for ignition switch related legal matters in Corporate. At and For the Nine Months Ended September 30, 2017 GMNA GMI Corporate Eliminations Total GM Cruise GM Eliminations Total Net sales and revenue $ 82,594 $ 16,226 $ 306 $ 99,126 $ — $ 8,899 $ (152 ) $ 107,873 Earnings (loss) before interest and taxes-adjusted $ 9,014 $ 884 $ (574 ) $ 9,324 $ (455 ) $ 895 $ (5 ) $ 9,759 Adjustments(a) $ — $ (540 ) $ (114 ) $ (654 ) $ — $ — $ — (654 ) Automotive interest income 184 Automotive interest expense (430 ) Net income attributable to noncontrolling interests 11 Income before income taxes 8,870 Income tax expense (3,637 ) Income from continuing operations 5,233 Loss from discontinued operations, net of tax (3,935 ) Net (income) attributable to noncontrolling interests (11 ) Net income attributable to stockholders $ 1,287 Depreciation and amortization $ 3,499 $ 535 $ 22 $ (1 ) $ 4,055 $ 1 $ 4,757 $ — $ 8,813 Impairment charges $ 59 $ 207 $ 5 $ — $ 271 $ — $ — $ — $ 271 Equity income $ 8 $ 1,448 $ — $ — $ 1,456 $ — $ 129 $ — $ 1,585 __________ (a) Consists of charges of $460 million related to restructuring actions in India and South Africa in GMI, charges of $80 million associated with the deconsolidation of Venezuela in GMI and charges of $114 million for ignition switch related legal matters in Corporate.

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Event	Subsequent Events On October 3, 2018, GM Cruise Holdings entered into a Purchase Agreement with Honda Motor Co., Ltd. (Honda), pursuant to which Honda invested $750 million in GM Cruise Holdings in exchange for Class E Common Shares, representing 5.7% of the fully diluted equity of GM Cruise Holdings as of the same date. In addition, Honda agreed to contribute approximately $2.0 billion primarily in the form of a long-term annual fee to GM Cruise Holdings for certain rights to use GM Cruise Holdings' trade names and trademarks and the exclusive right to partner with GM Cruise Holdings to develop, deploy, and maintain a foreign market. The remaining contribution or funding will come in the form of shared development costs for certain components of a shared autonomous vehicle (SAV) that Honda, General Motors Holdings LLC and GM Cruise Holdings will jointly develop for deployment onto GM Cruise's autonomous vehicle network. All proceeds are designated exclusively for working capital and general corporate purposes of GM Cruise. On October 31, 2018 we initiated a voluntary severance program for up to approximately 18,000 of our U.S., Canada and Mexico salaried employees and global executives. Program eligibility is dependent upon mutual agreement between the employee and GM. We are currently unable to estimate the utilization rate of this voluntary program, but we estimate the program will cost approximately $130 million for every 1,800 , or about 10% , of candidates who voluntarily separate under the program. We expect the program to conclude and will record a charge in the three months ending December 31, 2018. * * * * * * *

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Accounting	The accompanying condensed consolidated financial statements have been prepared in conformity with U.S. GAAP pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial information. Accordingly they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying condensed consolidated financial statements include all adjustments, which consist of normal recurring adjustments and transactions or events discretely impacting the interim periods, considered necessary by management to fairly state our results of operations, financial position and cash flows. The operating results for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our 2017 Form 10-K. Except for per share amounts or as otherwise specified, dollar amounts presented within tables are stated in millions. In the three months ended June 30, 2018 we changed the presentation of our condensed consolidated statements of cash flows to separately classify Depreciation and impairment of Equipment on operating leases, net and Depreciation, amortization and impairment charges on Property, net. We have made corresponding reclassifications to the comparable information for all periods presented.
Principles of Consolidation	Principles of Consolidation The Principles of Consolidation supplements information presented in our 2017 Form 10-K for the adoption on January 1, 2018 of Accounting Standards Update (ASU) 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities” (ASU 2016-01). We consolidate entities that we control due to ownership of a majority voting interest and we consolidate variable interest entities (VIEs) when we have variable interests and are the primary beneficiary. We continually evaluate our involvement with VIEs to determine when these criteria are met. 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. Beginning January 1, 2018 we no longer use the cost method of accounting.
Recently Adopted Accounting Standards and Accounting Standards Not Yet Adopted	Recently Adopted Accounting Standards Effective January 1, 2018 we adopted ASU 2014-09, "Revenue from Contracts with Customers" as amended (ASU 2014-09), as incorporated into Accounting Standards Codification (ASC) 606, on a modified retrospective basis by recognizing a cumulative effect adjustment to the opening balance of Retained earnings. Under ASU 2014-09 sales incentives will now be recorded at the time of sale rather than at the later of sale or announcement, thereby resulting in the shifting of incentive amounts to an earlier quarter and fixed fee license arrangements will now be recognized when access to intellectual property is granted instead of over the contract period. We currently expect the retiming of quarterly incentive amounts to offset for the year ending December 31, 2018. Actual incentive spending is dependent upon future market conditions. Beginning January 1, 2018 certain transfers to daily rental companies are accounted for as sales when ownership of the vehicle is not expected to transfer back to us. Such transactions were previously accounted for as operating leases. Transfers that occurred prior to January 2018 continue to be accounted for as operating leases because at the original time of transfer an expectation existed that ownership of the vehicle would transfer back to us. The following table summarizes the financial statement line items within our condensed consolidated income statement and balance sheet significantly impacted by ASU 2014-09: Three Months Ended September 30, 2018 As Reported Balances without Adoption of ASC 606 Effect of Change Income Statement Automotive net sales and revenue $ 32,276 $ 32,959 $ (683 ) Income before income taxes $ 2,630 $ 3,321 $ (691 ) Net income attributable to stockholders $ 2,534 $ 3,071 $ (537 ) Nine Months Ended September 30, 2018 As Reported Balances without Adoption of ASC 606 Effect of Change Income Statement Automotive net sales and revenue $ 98,242 $ 97,961 $ 281 Automotive and other cost of sales $ 88,788 $ 87,749 $ 1,039 Income before income taxes $ 7,091 $ 7,661 $ (570 ) Net income attributable to stockholders $ 5,970 $ 6,402 $ (432 ) September 30, 2018 As Reported Balances without Adoption of ASC 606 Effect of Change Balance Sheet Equipment on operating leases, net $ 474 $ 1,428 $ (954 ) Deferred income taxes $ 23,242 $ 22,661 $ 581 Accrued liabilities $ 28,104 $ 25,963 $ 2,141 Other liabilities $ 12,261 $ 12,657 $ (396 ) Retained earnings $ 20,865 $ 22,633 $ (1,768 ) Effective January 1, 2018 we adopted ASU 2016-01, on a modified retrospective basis, with a $182 million cumulative effect adjustment recorded to the opening balance of Retained earnings to adjust an investment previously carried at cost to its fair value. ASU 2016-01 requires equity investments that are not accounted for under the equity method of accounting to be measured at fair value with changes recognized in Net income. In the three months ended March 31, 2018 we adopted ASU 2017-12, "Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities" (ASU 2017-12), on a modified retrospective basis and adopted ASU 2018-02, "Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income” (ASU 2018-02), on a modified retrospective basis. ASU 2018-02 provides the option to reclassify stranded tax effects related to the U.S. Tax Cuts and Jobs Act of 2017 (the Tax Act) in accumulated other comprehensive income to retained earnings. The adjustment relates to the change in the U.S. corporate income tax rate. The cumulative effect of the adjustments to the opening balance of Retained earnings for these adopted standards was $108 million . The following table summarizes the changes to our condensed consolidated balance sheet for the adoption of ASU 2014-09, ASU 2016-01, ASU 2017-12 and ASU 2018-02: December 31, 2017 Adjustment due to ASU 2014-09 Adjustment due to ASU 2016-01, ASU 2017-12 and ASU 2018-02 January 1, 2018 Deferred income taxes $ 23,544 $ 444 $ (63 ) $ 23,925 Other assets $ 4,929 $ 195 $ 242 $ 5,366 GM Financial short-term debt and current portion of long-term debt $ 24,450 $ — $ (13 ) $ 24,437 Accrued liabilities $ 25,996 $ 2,328 $ — $ 28,324 Other liabilities $ 12,394 $ (235 ) $ — $ 12,159 Retained earnings $ 17,627 $ (1,336 ) $ 290 $ 16,581 Accumulated other comprehensive loss $ (8,011 ) $ — $ (98 ) $ (8,109 ) Effective January 1, 2018 we adopted ASU 2016-15, "Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Payments" (ASU 2016-15), which clarified guidance on the classification of certain cash receipts and payments in the statement of cash flows. The adoption of ASU 2016-15 did not have a material impact on our condensed consolidated financial statements and prior periods were not restated. Effective January 1, 2018 we adopted ASU 2017-07, "Compensation - Retirement Benefits (Topic 715), Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost" (ASU 2017-07) on a retrospective basis, which requires that the service cost component of net periodic pension and other postretirement benefits (OPEB) (income) expense be presented in the same income statement line item as other employee compensation costs. The remaining components of net periodic pension and OPEB (income) expense are now presented outside operating income. Amounts previously reflected in Operating income were reclassified to Interest income and other non-operating income, net in accordance with the provisions of ASU 2017-07. Refer to Note 13 for amounts that were reclassified. Accounting Standards Not Yet Adopted In February 2016 the Financial Accounting Standards Board issued ASU 2016-02, "Leases" (ASU 2016-02), which requires us as the lessee to recognize most leases on the balance sheet thereby resulting in the recognition of right of use assets and lease obligations for those leases currently classified as operating leases. The accounting for leases where we are the lessor remains largely unchanged. We are continuing to assess the accounting and disclosure impact of ASU 2016-02 and refine our processes to permit adoption on January 1, 2019. We plan to elect the optional transition method as well as the package of practical expedients upon adoption. We expect the primary impact to our consolidated financial position upon adoption will be the recognition, on a discounted basis, of our minimum commitments under noncancelable operating leases on our consolidated balance sheets resulting in the recording of right of use assets and lease obligations. Our minimum commitments under noncancelable operating leases are not significantly different than those disclosed in our 2017 Form 10-K. In June 2016 the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" (ASU 2016-13), which requires entities to use a new impairment model based on Current Expected Credit Losses (CECL) rather than incurred losses. We plan to adopt ASU 2016-13 on January 1, 2020 on a modified retrospective basis, which will result in an increase to our allowance for credit losses and a decrease to Retained earnings as of the adoption date. Estimated credit losses under CECL will consider relevant information about past events, current conditions and reasonable and supportable forecasts, resulting in recognition of lifetime expected credit losses upon loan origination.
Revenue Recognition	Revenue Recognition We adopted ASU 2014-09, which requires us to recognize revenue when a customer obtains control rather than when we have transferred substantially all risks and rewards of a good or service. We adopted ASU 2014-09 by applying the modified retrospective method to all noncompleted contracts as of the date of adoption. See Note 1 for additional information pertaining to the adoption of ASU 2014-09. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. The following accounting policies became effective upon the adoption of ASU 2014-09. 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 type, product mix, customer behavior and assumptions concerning market conditions. Historical experience is also considered when establishing our future expectations. Subsequent adjustments to incentive estimates are possible as facts and circumstances change over time. When our customers have a right to return eligible parts and accessories, we consider the returns in our estimation of the transaction price. 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. 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. V e hicle, 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. Certain transfers to daily rental companies are accounted for as sales, with revenue recognized at the time of transfer. Such transactions were previously accounted for as operating leases. At the time of transfer, we defer revenue for remarketing obligations, record a residual value guarantee and reflect a deposit liability for amounts expected to be returned once the remarketing services are complete. Deferred revenue is recognized in earnings upon completion of the remarketing service. Transfers that occurred prior to January 1, 2018 and future transfers containing a substantive purchase obligation continue to be accounted for as operating leases and rental income is recognized over the estimated term of the lease. Used Vehicles Proceeds from the auction of vehicles returned from daily rental car companies 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, 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 less than three years . Automotive Financing - GM Financial Finance charge income earned on receivables is recognized using the effective interest method. Fees and commissions (including incentive payments) received 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 condensed consolidated balance sheets when the related finance receivables are sold, 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 recorded 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 and incentives, is recorded as operating lease revenue on a straight-line basis over the term of the lease agreement.
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 contracts 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 adequacy of 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. Impairment is determined to exist 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's 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's asset group. Fair value is determined primarily using the anticipated cash flows, including estimated residual values. 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 estimated selling price, less costs to sell. 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.
Marketable Debt Securities	Marketable Debt Securities We classify marketable debt securities as either available-for-sale or trading. 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 unrealized gains and losses recorded net of related income taxes in Accumulated other comprehensive loss until realized. Trading debt securities are recorded at fair value with changes in fair value recorded in Interest income and other non-operating income, net. We determine realized gains and losses for all debt securities using the specific identification method. We 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. An evaluation is made quarterly to determine if unrealized losses related to non-trading investments in debt securities are other-than-temporary. Factors considered include the length of time and extent to which the fair value has been below cost, the financial condition and near-term prospects of the issuer and the intent to sell or likelihood to be forced to sell the debt security before any anticipated recovery.
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.
Derivative Financial Instruments	Derivative Financial Instruments The following changes to our accounting policies became effective upon adoption of ASU 2017-12. Automotive Certain foreign currency and commodity forward contracts have been designated as cash flow hedges. The risk being hedged is the foreign currency and commodity price 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 Automotive and other cost of sales along with the earnings effect of the hedged item when the hedged item affects earnings. Automotive Financing - GM Financial Certain interest rate swap and foreign currency swap agreements have been designated as cash flow hedges. The risk being hedged is the foreign currency and interest rate 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.

Nature of Operations and Basi_2

Nature of Operations and Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2018
Nature of Operations and Basis of Presentation [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The following table summarizes the financial statement line items within our condensed consolidated income statement and balance sheet significantly impacted by ASU 2014-09: Three Months Ended September 30, 2018 As Reported Balances without Adoption of ASC 606 Effect of Change Income Statement Automotive net sales and revenue $ 32,276 $ 32,959 $ (683 ) Income before income taxes $ 2,630 $ 3,321 $ (691 ) Net income attributable to stockholders $ 2,534 $ 3,071 $ (537 ) Nine Months Ended September 30, 2018 As Reported Balances without Adoption of ASC 606 Effect of Change Income Statement Automotive net sales and revenue $ 98,242 $ 97,961 $ 281 Automotive and other cost of sales $ 88,788 $ 87,749 $ 1,039 Income before income taxes $ 7,091 $ 7,661 $ (570 ) Net income attributable to stockholders $ 5,970 $ 6,402 $ (432 ) September 30, 2018 As Reported Balances without Adoption of ASC 606 Effect of Change Balance Sheet Equipment on operating leases, net $ 474 $ 1,428 $ (954 ) Deferred income taxes $ 23,242 $ 22,661 $ 581 Accrued liabilities $ 28,104 $ 25,963 $ 2,141 Other liabilities $ 12,261 $ 12,657 $ (396 ) Retained earnings $ 20,865 $ 22,633 $ (1,768 ) The following table summarizes the changes to our condensed consolidated balance sheet for the adoption of ASU 2014-09, ASU 2016-01, ASU 2017-12 and ASU 2018-02: December 31, 2017 Adjustment due to ASU 2014-09 Adjustment due to ASU 2016-01, ASU 2017-12 and ASU 2018-02 January 1, 2018 Deferred income taxes $ 23,544 $ 444 $ (63 ) $ 23,925 Other assets $ 4,929 $ 195 $ 242 $ 5,366 GM Financial short-term debt and current portion of long-term debt $ 24,450 $ — $ (13 ) $ 24,437 Accrued liabilities $ 25,996 $ 2,328 $ — $ 28,324 Other liabilities $ 12,394 $ (235 ) $ — $ 12,159 Retained earnings $ 17,627 $ (1,336 ) $ 290 $ 16,581 Accumulated other comprehensive loss $ (8,011 ) $ — $ (98 ) $ (8,109 )

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2018
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 : Three Months Ended September 30, 2018 GMNA GMI Corporate Total Automotive GM Financial Eliminations Total Vehicle, parts and accessories $ 26,273 $ 4,226 $ 2 $ 30,501 $ — $ (11 ) $ 30,490 Used vehicles 582 23 — 605 — (1 ) 604 Services and other 795 333 54 1,182 — — 1,182 Automotive net sales and revenue 27,650 4,582 56 32,288 — (12 ) 32,276 Leased vehicle income — — — — 2,501 — 2,501 Finance charge income — — — — 917 (2 ) 915 Other income — — — — 100 (1 ) 99 GM Financial net sales and revenue — — — — 3,518 (3 ) 3,515 Net sales and revenue $ 27,650 $ 4,582 $ 56 $ 32,288 $ 3,518 $ (15 ) $ 35,791 Nine Months Ended September 30, 2018 GMNA GMI Corporate Total Automotive GM Financial Eliminations Total Vehicle, parts and accessories $ 79,029 $ 13,320 $ 12 $ 92,361 $ — $ (36 ) $ 92,325 Used vehicles 2,506 138 — 2,644 — (34 ) 2,610 Services and other 2,434 730 143 3,307 — — 3,307 Automotive net sales and revenue 83,969 14,188 155 98,312 — (70 ) 98,242 Leased vehicle income — — — — 7,445 — 7,445 Finance charge income — — — — 2,667 (5 ) 2,662 Other income — — — — 305 (4 ) 301 GM Financial net sales and revenue — — — — 10,417 (9 ) 10,408 Net sales and revenue $ 83,969 $ 14,188 $ 155 $ 98,312 $ 10,417 $ (79 ) $ 108,650

Marketable and Other Securiti_2

Marketable and Other Securities (Tables)	9 Months Ended
	Sep. 30, 2018
Marketable Securities [Abstract]
Available-for-sale Securities	The following table summarizes the fair value of cash equivalents and marketable debt and equity securities which approximates cost: Fair Value Level September 30, 2018 December 31, 2017 Cash and cash equivalents Cash and time deposits(a) $ 7,144 $ 6,962 Available-for-sale debt securities U.S. government and agencies 2 1,115 750 Corporate debt 2 2,774 3,032 Sovereign debt 2 2,033 1,954 Total available-for-sale debt securities – cash equivalents 5,922 5,736 Money market funds(b) 1 5,369 2,814 Total cash and cash equivalents $ 18,435 $ 15,512 Marketable debt securities U.S. government and agencies 2 $ 1,229 $ 3,310 Corporate debt 2 3,416 3,665 Mortgage and asset-backed 2 685 635 Sovereign debt 2 586 703 Total available-for-sale debt securities – marketable securities $ 5,916 $ 8,313 Restricted cash Cash and cash equivalents $ 198 $ 219 Money market funds 1 2,225 2,117 Total restricted cash $ 2,423 $ 2,336 Available-for-sale debt securities included above with contractual maturities(c) Due in one year or less $ 6,777 Due between one and five years 4,376 Total available-for-sale debt securities with contractual maturities $ 11,153 __________ (a) Includes $364 million that is designated exclusively to fund capital expenditures in GM Korea Company (GM Korea) at September 30, 2018 . Refer to Note 17 for additional information. (b) Includes $1.8 billion in GM Cruise at September 30, 2018 . Refer to Note 17 for additional information. (c) Excludes mortgage and asset-backed securities.
Schedule of Fair Value of Cash Equivalents and Marketable Securities	The following table summarizes the fair value of cash equivalents and marketable debt and equity securities which approximates cost: Fair Value Level September 30, 2018 December 31, 2017 Cash and cash equivalents Cash and time deposits(a) $ 7,144 $ 6,962 Available-for-sale debt securities U.S. government and agencies 2 1,115 750 Corporate debt 2 2,774 3,032 Sovereign debt 2 2,033 1,954 Total available-for-sale debt securities – cash equivalents 5,922 5,736 Money market funds(b) 1 5,369 2,814 Total cash and cash equivalents $ 18,435 $ 15,512 Marketable debt securities U.S. government and agencies 2 $ 1,229 $ 3,310 Corporate debt 2 3,416 3,665 Mortgage and asset-backed 2 685 635 Sovereign debt 2 586 703 Total available-for-sale debt securities – marketable securities $ 5,916 $ 8,313 Restricted cash Cash and cash equivalents $ 198 $ 219 Money market funds 1 2,225 2,117 Total restricted cash $ 2,423 $ 2,336 Available-for-sale debt securities included above with contractual maturities(c) Due in one year or less $ 6,777 Due between one and five years 4,376 Total available-for-sale debt securities with contractual maturities $ 11,153 __________ (a) Includes $364 million that is designated exclusively to fund capital expenditures in GM Korea Company (GM Korea) at September 30, 2018 . Refer to Note 17 for additional information. (b) Includes $1.8 billion in GM Cruise at September 30, 2018 . Refer to Note 17 for additional information. (c) Excludes mortgage and asset-backed securities.
Investments Classified by Contractual Maturity Date	The following table summarizes the fair value of cash equivalents and marketable debt and equity securities which approximates cost: Fair Value Level September 30, 2018 December 31, 2017 Cash and cash equivalents Cash and time deposits(a) $ 7,144 $ 6,962 Available-for-sale debt securities U.S. government and agencies 2 1,115 750 Corporate debt 2 2,774 3,032 Sovereign debt 2 2,033 1,954 Total available-for-sale debt securities – cash equivalents 5,922 5,736 Money market funds(b) 1 5,369 2,814 Total cash and cash equivalents $ 18,435 $ 15,512 Marketable debt securities U.S. government and agencies 2 $ 1,229 $ 3,310 Corporate debt 2 3,416 3,665 Mortgage and asset-backed 2 685 635 Sovereign debt 2 586 703 Total available-for-sale debt securities – marketable securities $ 5,916 $ 8,313 Restricted cash Cash and cash equivalents $ 198 $ 219 Money market funds 1 2,225 2,117 Total restricted cash $ 2,423 $ 2,336 Available-for-sale debt securities included above with contractual maturities(c) Due in one year or less $ 6,777 Due between one and five years 4,376 Total available-for-sale debt securities with contractual maturities $ 11,153 __________ (a) Includes $364 million that is designated exclusively to fund capital expenditures in GM Korea Company (GM Korea) at September 30, 2018 . Refer to Note 17 for additional information. (b) Includes $1.8 billion in GM Cruise at September 30, 2018 . Refer to Note 17 for additional information. (c) Excludes mortgage and asset-backed securities.
Reconciliation of Cash, Cash Equivalents and Restricted Cash from Balance Sheet to Statements of Cash Flows	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheet to the total shown in the condensed consolidated statement of cash flows: September 30, 2018 Cash and cash equivalents $ 18,435 Restricted cash included in Other current assets 1,883 Restricted cash included in Other assets 540 Total $ 20,858

GM Financial Receivables and _2

GM Financial Receivables and Transactions (Tables) - GM Financial [Member]	9 Months Ended
	Sep. 30, 2018
Finance Receivables [Line Items]
GM Financial Receivables	September 30, 2018 December 31, 2017 Retail Commercial Total Retail Commercial Total Finance receivables, collectively evaluated for impairment, net of fees $ 35,442 $ 10,601 $ 46,043 $ 30,486 $ 9,935 $ 40,421 Finance receivables, individually evaluated for impairment, net of fees 2,308 67 2,375 2,228 22 2,250 GM Financial receivables 37,750 10,668 48,418 32,714 9,957 42,671 Less: allowance for loan losses (839 ) (61 ) (900 ) (889 ) (53 ) (942 ) GM Financial receivables, net $ 36,911 $ 10,607 $ 47,518 $ 31,825 $ 9,904 $ 41,729 Fair value of GM Financial receivables utilizing Level 2 inputs $ 10,607 $ 9,904 Fair value of GM Financial receivables utilizing Level 3 inputs $ 36,551 $ 31,831
Allowance for Loan Losses	Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Allowance for loan losses at beginning of period $ 873 $ 893 $ 942 $ 805 Provision for loan losses 180 204 444 573 Charge-offs (285 ) (287 ) (878 ) (858 ) Recoveries 130 135 398 420 Effect of foreign currency 2 3 (6 ) 8 Allowance for loan losses at end of period $ 900 $ 948 $ 900 $ 948
Intercompany Transactions	The following table shows transactions between our Automotive segments and GM Financial. These amounts are shown in GM Financial's condensed consolidated balance sheets and statements of income. All balance sheet amounts in the table below are eliminated. Income statement amounts may not fully eliminate due to timing. September 30, 2018 December 31, 2017 Condensed Consolidated Balance Sheets Commercial finance receivables, net due from GM consolidated dealers $ 437 $ 355 Direct-financing lease receivables from GM subsidiaries $ 125 $ 88 Subvention receivable(a) $ 735 $ 306 Commercial loan funding payable $ 86 $ 90 Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Condensed Consolidated Statements of Income Interest subvention earned on finance receivables $ 142 $ 129 $ 409 $ 361 Leased vehicle subvention earned $ 827 $ 786 $ 2,438 $ 2,246 __________ (a) Cash paid by Automotive segments to GM Financial for subvention was $1.1 billion for the three months ended September 30, 2018 and 2017 and $2.8 billion and $3.3 billion for the nine months ended September 30, 2018 and 2017 .
Retail Finance Receivables [Member]
Finance Receivables [Line Items]
Retail Finance Receivables Delinquency	The following table summarizes the contractual amount of delinquent retail finance receivables, which is not significantly different than the recorded investment of the retail finance receivables: September 30, 2018 September 30, 2017 Amount Percent of Contractual Amount Due Amount Percent of Contractual Amount Due 31-to-60 days delinquent $ 1,302 3.5 % $ 1,176 3.6 % Greater-than-60 days delinquent 498 1.3 % 521 1.6 % Total finance receivables more than 30 days delinquent 1,800 4.8 % 1,697 5.2 % In repossession 53 0.1 % 55 0.2 % Total finance receivables more than 30 days delinquent or in repossession $ 1,853 4.9 % $ 1,752 5.4 %
Commercial Finance Receivables [Member]
Finance Receivables [Line Items]
Commercial Finance Receivables Credit Quality	The following table summarizes the credit risk profile by dealer risk rating of the commercial finance receivables: September 30, 2018 December 31, 2017 Group I – Dealers with superior financial metrics $ 2,077 $ 1,915 Group II – Dealers with strong financial metrics 3,905 3,465 Group III – Dealers with fair financial metrics 3,197 3,239 Group IV – Dealers with weak financial metrics 960 997 Group V – Dealers warranting special mention due to elevated risks 422 260 Group VI – Dealers with loans classified as substandard, doubtful or impaired 107 81 $ 10,668 $ 9,957

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Components of Inventories	September 30, 2018 December 31, 2017 Total productive material, supplies and work in process $ 4,634 $ 4,203 Finished product, including service parts 6,700 6,460 Total inventories $ 11,334 $ 10,663

Equipment on Operating Leases (

Equipment on Operating Leases (Tables) - Vehicles [Member]	9 Months Ended
	Sep. 30, 2018
Property Subject to or Available for Operating Lease [Line Items]
Schedule of Property Subject to or Available for Operating Lease	September 30, 2018 December 31, 2017 Equipment on operating leases $ 55,840 $ 53,947 Less: accumulated depreciation (11,238 ) (9,959 ) Equipment on operating leases, net(a) $ 44,602 $ 43,988 __________ (a) Includes $44.1 billion and $42.9 billion of GM Financial Equipment on operating leases, net at September 30, 2018 and December 31, 2017 .
GM Financial [Member]
Property Subject to or Available for Operating Lease [Line Items]
Schedule of Future Minimum Rental Payments Receivable for Operating Leases	The following table summarizes minimum rental payments due to GM Financial on leases to retail customers: Year Ending December 31, 2018 2019 2020 2021 2022 Thereafter Total Minimum rental receipts under operating leases $ 1,882 $ 6,260 $ 3,570 $ 1,077 $ 97 $ 6 $ 12,892

Equity In Net Assets of Nonco_2

Equity In Net Assets of Nonconsolidated Affiliates (Tables)	9 Months Ended
	Sep. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Equity Income	Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Automotive China equity income $ 485 $ 459 $ 1,674 $ 1,472 Other joint ventures equity income 45 41 141 113 Total Equity income $ 530 $ 500 $ 1,815 $ 1,585
Summarized Financial Data for Nonconsolidated Affiliates	Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Summarized Operating Data of Automotive China JVs Automotive China JVs' net sales $ 11,461 $ 12,161 $ 37,781 $ 34,177 Automotive China JVs' net income $ 999 $ 964 $ 3,370 $ 2,912

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2018
GM Financial [Member] | Consolidated VIE [Member]
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: September 30, 2018 December 31, 2017 Restricted cash – current $ 1,733 $ 1,740 Restricted cash – non-current $ 487 $ 527 GM Financial receivables, net of fees – current $ 16,502 $ 15,141 GM Financial receivables, net of fees – non-current $ 13,080 $ 12,944 GM Financial equipment on operating leases, net $ 21,252 $ 22,222 GM Financial short-term debt and current portion of long-term debt $ 19,086 $ 18,972 GM Financial long-term debt $ 20,392 $ 20,356

Automotive and GM Financial D_2

Automotive and GM Financial Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Automotive [Member]
Debt Instrument [Line Items]
Debt carrying amount and fair value	September 30, 2018 December 31, 2017 Carrying Amount Fair Value Carrying Amount Fair Value Total automotive debt $ 15,963 $ 16,352 $ 13,502 $ 15,088 Fair value utilizing Level 1 inputs $ 13,971 $ 13,202 Fair value utilizing Level 2 inputs $ 2,381 $ 1,886
GM Financial [Member]
Debt Instrument [Line Items]
Debt carrying amount and fair value	September 30, 2018 December 31, 2017 Carrying Amount Fair Value Carrying Amount Fair Value Secured debt $ 39,722 $ 39,679 $ 39,887 $ 39,948 Unsecured debt 46,655 47,062 40,830 41,989 Total GM Financial debt $ 86,377 $ 86,741 $ 80,717 $ 81,937 Fair value utilizing Level 2 inputs $ 84,693 $ 79,623 Fair value utilizing Level 3 inputs $ 2,048 $ 2,314

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2018
Derivative [Line Items]
Schedule of Cumulative Basis Adjustments for Fair Value Hedges	The following amounts were recorded in the condensed consolidated balance sheet related to items designated and qualifying as hedged items in fair value hedging relationships: September 30, 2018 Carrying Amount of Hedged Items Cumulative Amount of Fair Value Hedging Adjustments(a) GM Financial long-term debt $ 15,363 $ 735 __________ (a) Includes $178 million of adjustments remaining on hedged items for which hedge accounting has been discontinued.
Automotive [Member]
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 September 30, 2018 December 31, 2017 Derivatives not designated as hedges(a) Foreign currency 2 $ 2,970 $ 4,022 Commodity 2 636 606 PSA warrants(b) 2 46 48 Total derivative financial instruments $ 3,652 $ 4,676 __________ (a) The fair value of these derivative instruments at September 30, 2018 and December 31, 2017 and the gains/losses included in our condensed consolidated income statements for the three and nine months ended September 30, 2018 and 2017 were insignificant, unless otherwise noted. (b) The fair value of the PSA warrants located in Other assets was $1.1 billion and $764 million at September 30, 2018 and December 31, 2017 . We recorded gains in Interest income and other non-operating income, net of $171 million and an insignificant amount in the three months ended September 30, 2018 and 2017 and $324 million and an insignificant amount in the nine months ended September 30, 2018 and 2017 .
GM Financial [Member]
Derivative [Line Items]
Schedule of Notional Amounts for Derivative Financial Instruments	The following table presents the notional amounts of GM Financial's derivative financial instruments: Fair Value Level September 30, 2018 December 31, 2017 Derivatives designated as hedges(a) Fair value hedges – interest rate contracts(b)(c) 2 $ 10,510 $ 11,110 Cash flow hedges Interest rate contracts 2 905 2,177 Foreign currency 2 2,108 1,574 Derivatives not designated as hedges(a) Interest rate contracts(c)(d) 2 93,162 81,938 Foreign currency 2 1,858 1,201 Total derivative financial instruments $ 108,543 $ 98,000 __________ (a) The fair value of these derivative instruments at September 30, 2018 and December 31, 2017 and the gains/losses included in our condensed consolidated income statements and statements of comprehensive income for the three and nine months ended September 30, 2018 and 2017 were insignificant, unless otherwise noted. (b) The fair value of these derivative instruments located in Other liabilities was $510 million and $290 million at September 30, 2018 and December 31, 2017 . The fair value of these derivative instruments located in Other assets was insignificant at September 30, 2018 and December 31, 2017 . (c) 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. (d) The fair value of these derivative instruments located in Other assets was $551 million and $329 million at September 30, 2018 and December 31, 2017 . The fair value of these derivative instruments located in Other liabilities was $670 million and $207 million at September 30, 2018 and December 31, 2017 .

Product Warranty and Related _2

Product Warranty and Related Liabilities (Tables)	9 Months Ended
	Sep. 30, 2018
Product Warranties Disclosures [Abstract]
Schedule of policy, product warranty and recall campaigns	Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Warranty balance at beginning of period $ 7,990 $ 8,890 $ 8,332 $ 9,069 Warranties issued and assumed in period – recall campaigns 101 173 515 527 Warranties issued and assumed in period – product warranty 542 481 1,599 1,586 Payments (723 ) (787 ) (2,175 ) (2,382 ) Adjustments to pre-existing warranties (209 ) (317 ) (426 ) (405 ) Effect of foreign currency and other (8 ) 39 (152 ) 84 Warranty balance at end of period $ 7,693 $ 8,479 $ 7,693 $ 8,479

Pensions and Other Postretire_2

Pensions and Other Postretirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2018
Retirement Benefits [Abstract]
Components of Net Periodic Pension and OPEB (Income) Expense	Three Months Ended September 30, 2018 Three Months Ended September 30, 2017 Pension Benefits Global OPEB Plans Pension Benefits Global OPEB Plans U.S. Non-U.S. U.S. Non-U.S. Service cost $ 83 $ 33 $ 5 $ 79 $ 45 $ 4 Interest cost 513 112 49 536 115 51 Expected return on plan assets (972 ) (201 ) — (919 ) (185 ) — Amortization of prior service cost (credit) (1 ) 1 (4 ) (1 ) 2 (3 ) Amortization of net actuarial (gains) losses 2 35 14 (2 ) 29 8 Curtailments, settlements and other — 18 — — — — Net periodic pension and OPEB (income) expense $ (375 ) $ (2 ) $ 64 $ (307 ) $ 6 $ 60 Nine Months Ended September 30, 2018 Nine Months Ended September 30, 2017 Pension Benefits Global OPEB Plans Pension Benefits Global OPEB Plans U.S. Non-U.S. U.S. Non-U.S. Service cost $ 248 $ 138 $ 15 $ 237 $ 131 $ 14 Interest cost 1,538 349 147 1,608 366 149 Expected return on plan assets (2,917 ) (621 ) — (2,757 ) (528 ) — Amortization of prior service cost (credit) (3 ) 3 (11 ) (3 ) 4 (10 ) Amortization of net actuarial (gains) losses 7 109 40 (5 ) 124 24 Curtailments, settlements and other — 18 — — — — Net periodic pension and OPEB (income) expense $ (1,127 ) $ (4 ) $ 191 $ (920 ) $ 97 $ 177

Restructuring and Other Initi_2

Restructuring and Other Initiatives (Tables)	9 Months Ended
	Sep. 30, 2018
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Reserves and Charges	The following table summarizes the reserves and charges related to restructuring and other initiatives, including postemployment benefit reserves and charges: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Balance at beginning of period $ 274 $ 493 $ 227 $ 268 Additions, interest accretion and other 8 43 600 333 Payments (72 ) (75 ) (567 ) (150 ) Revisions to estimates and effect of foreign currency (3 ) (7 ) (53 ) 3 Balance at end of period $ 207 $ 454 $ 207 $ 454

Stockholders' Equity and Nonc_2

Stockholders' Equity and Noncontrolling Interests (Tables)	9 Months Ended
	Sep. 30, 2018
Stockholders' Equity Note [Abstract]
Schedule of Accumulated Other Comprehensive Loss	The following table summarizes the significant components of Accumulated other comprehensive loss: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Foreign Currency Translation Adjustments Balance at beginning of period $ (1,826 ) $ (2,162 ) $ (1,606 ) $ (2,355 ) Other comprehensive income (loss) and noncontrolling interests, net of reclassification adjustment, tax and impact of adoption of accounting standards(a)(b)(c) (215 ) 370 (435 ) 563 Balance at end of period $ (2,041 ) $ (1,792 ) $ (2,041 ) $ (1,792 ) Defined Benefit Plans Balance at beginning of period $ (6,290 ) $ (7,208 ) $ (6,398 ) $ (6,968 ) Other comprehensive income (loss) before reclassification adjustment, net of tax and impact of adoption of accounting standards(b)(c) (4 ) 87 16 (256 ) Reclassification adjustment, net of tax(b)(d) 63 1,126 151 1,229 Other comprehensive income, net of tax and impact of adoption of accounting standards(b)(c) 59 1,213 167 973 Balance at end of period(e) $ (6,231 ) $ (5,995 ) $ (6,231 ) $ (5,995 ) __________ (a) The noncontrolling interests and reclassification adjustment were insignificant in the three and nine months ended September 30, 2018 and 2017 . (b) The income tax effect was insignificant in the three and nine months ended September 30, 2018 and 2017 . (c) Refer to Note 1 for additional information on adoption of accounting standards in 2018. (d) $1.2 billion is included in the loss on sale of the Opel/Vauxhall Business in the three and nine months ended September 30, 2017. An insignificant amount is included in the computation of periodic pension and OPEB (income) expense in the three and nine months ended September 30, 2017. (e) Consists primarily of unamortized actuarial loss on our defined benefit plans. Refer to the critical accounting estimates section of our 2017 Form 10-K for additional information.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share Basic and Diluted	Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Basic earnings per share Income from continuing operations(a) $ 2,534 $ 115 $ 6,040 $ 5,222 Less: cumulative dividends on subsidiary preferred stock (31 ) (2 ) (60 ) (2 ) Income from continuing operations attributable to common stockholders 2,503 113 5,980 5,220 Loss from discontinued operations, net of tax — 3,096 70 3,935 Net income (loss) attributable to common stockholders $ 2,503 $ (2,983 ) $ 5,910 $ 1,285 Weighted-average common shares outstanding 1,412 1,445 1,410 1,483 Basic earnings per common share – continuing operations $ 1.77 $ 0.08 $ 4.24 $ 3.52 Basic loss per common share – discontinued operations $ — $ 2.14 $ 0.05 $ 2.65 Basic earnings (loss) per common share $ 1.77 $ (2.06 ) $ 4.19 $ 0.87 Diluted earnings per share Income from continuing operations attributable to common stockholders – diluted(a) $ 2,503 $ 113 $ 5,980 $ 5,220 Loss from discontinued operations, net of tax – diluted $ — $ 3,096 $ 70 $ 3,935 Net income (loss) attributable to common stockholders – diluted $ 2,503 $ (2,983 ) $ 5,910 $ 1,285 Weighted-average common shares outstanding – basic 1,412 1,445 1,410 1,483 Dilutive effect of warrants and awards under stock incentive plans 19 27 21 24 Weighted-average common shares outstanding – diluted 1,431 1,472 1,431 1,507 Diluted earnings per common share – continuing operations $ 1.75 $ 0.08 $ 4.18 $ 3.46 Diluted loss per common share – discontinued operations $ — $ 2.11 $ 0.05 $ 2.61 Diluted earnings (loss) per common share $ 1.75 $ (2.03 ) $ 4.13 $ 0.85 Potentially dilutive securities(b) 4 6 4 6 __________ (a) Net of Net (income) loss attributable to noncontrolling interests. (b) Potentially dilutive securities attributable to outstanding stock options and Restricted Stock Units (RSUs) were excluded from the computation of diluted earnings per share (EPS) because the securities would have had an antidilutive effect.

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	The following table summarizes the results of the European Business operations: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Automotive net sales and revenue $ — $ 1,553 $ — $ 11,257 GM Financial net sales and revenue — 147 — 414 Total net sales and revenue — 1,700 — 11,671 Automotive and other cost of sales — 1,583 — 11,049 GM Financial interest, operating and other expenses — 99 — 301 Automotive and other selling, general, and administrative expense — 134 — 813 Other expense items — 74 — 72 Loss from discontinued operations before taxes — 190 — 564 Loss on sale of discontinued operations before taxes(a) — 1,150 70 1,986 Total loss from discontinued operations before taxes — 1,340 70 2,550 Income tax expense(a)(b) — 1,756 — 1,385 Loss from discontinued operations, net of tax $ — $ 3,096 $ 70 $ 3,935 __________ (a) Total loss on sale of discontinued operations, net of tax was $3.1 billion and $3.7 billion for the three and nine months ended September 30, 2017. (b) Includes $2.0 billion of deferred tax assets that transferred to PSA Group in the three and nine months ended September 30, 2017.

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following tables summarize key financial information by segment: At and For the Three Months Ended September 30, 2018 GMNA GMI Corporate Eliminations Total Automotive GM Cruise GM Financial Eliminations Total Net sales and revenue $ 27,650 $ 4,582 $ 56 $ 32,288 $ — $ 3,518 $ (15 ) $ 35,791 Earnings (loss) before interest and taxes-adjusted $ 2,825 $ 139 $ (94 ) $ 2,870 $ (214 ) $ 498 $ (1 ) $ 3,153 Adjustments(a) $ — $ — $ (440 ) $ (440 ) $ — $ — $ — (440 ) Automotive interest income 82 Automotive interest expense (161 ) Net (loss) attributable to noncontrolling interests (4 ) Income before income taxes 2,630 Income tax expense (100 ) Income from continuing operations 2,530 Loss from discontinued operations, net of tax — Net loss attributable to noncontrolling interests 4 Net income attributable to stockholders $ 2,534 Equity in net assets of nonconsolidated affiliates $ 77 $ 7,770 $ — $ — $ 7,847 $ — $ 1,308 $ — $ 9,155 Goodwill and intangibles $ 2,674 $ 939 $ 2 $ — $ 3,615 $ 679 $ 1,357 $ — $ 5,651 Total assets $ 110,245 $ 25,780 $ 28,194 $ (45,323 ) $ 118,896 $ 2,567 $ 105,658 $ (1,410 ) $ 225,711 Depreciation and amortization $ 1,251 $ 136 $ 12 $ — $ 1,399 $ 2 $ 1,904 $ — $ 3,305 Impairment charges $ — $ 2 $ 6 $ — $ 8 $ — $ — $ — $ 8 Equity income $ 2 $ 484 $ — $ — $ 486 $ — $ 44 $ — $ 530 __________ (a) Consists of charges for ignition switch related legal matters. At and For the Three Months Ended September 30, 2017 GMNA GMI Corporate Eliminations Total GM Cruise GM Eliminations Total Net sales and revenue $ 24,819 $ 5,576 $ 80 $ 30,475 $ — $ 3,161 $ (13 ) $ 33,623 Earnings (loss) before interest and taxes-adjusted $ 2,068 $ 389 $ (77 ) $ 2,380 $ (165 ) $ 310 $ (2 ) $ 2,523 Adjustments $ — $ — $ — $ — $ — $ — $ — — Automotive interest income 59 Automotive interest expense (151 ) Net (loss) attributable to noncontrolling interests (1 ) Income before income taxes 2,430 Income tax expense (2,316 ) Income from continuing operations 114 Loss from discontinued operations, net of tax (3,096 ) Net loss attributable to noncontrolling interests 1 Net loss attributable to stockholders $ (2,981 ) Equity in net assets of nonconsolidated affiliates $ 82 $ 7,619 $ — $ — $ 7,701 $ — $ 1,119 $ — $ 8,820 Goodwill and intangibles $ 2,871 $ 980 $ 12 $ — $ 3,863 $ 620 $ 1,371 $ — $ 5,854 Total assets(a) $ 109,934 $ 27,832 $ 25,797 $ (39,731 ) $ 123,832 $ 564 $ 106,142 $ (1,036 ) $ 229,502 Depreciation and amortization $ 1,210 $ 166 $ 11 $ — $ 1,387 $ — $ 1,743 $ — $ 3,130 Impairment charges $ 10 $ 7 $ — $ — $ 17 $ — $ — $ — $ 17 Equity income $ 2 $ 457 $ — $ — $ 459 $ — $ 41 $ — $ 500 __________ (a) Assets in GM Financial include assets classified as held for sale. At and For the Nine Months Ended September 30, 2018 GMNA GMI Corporate Eliminations Total GM Cruise GM Eliminations Total Net sales and revenue $ 83,969 $ 14,188 $ 155 $ 98,312 $ — $ 10,417 $ (79 ) $ 108,650 Earnings (loss) before interest and taxes-adjusted $ 7,728 $ 471 $ (187 ) $ 8,012 $ (534 ) $ 1,477 $ — $ 8,955 Adjustments(a) $ — $ (1,138 ) $ (440 ) $ (1,578 ) $ — $ — $ — (1,578 ) Automotive interest income 218 Automotive interest expense (470 ) Net (loss) attributable to noncontrolling interests (34 ) Income before income taxes 7,091 Income tax expense (1,085 ) Income from continuing operations 6,006 Loss from discontinued operations, net of tax (70 ) Net loss attributable to noncontrolling interests 34 Net income attributable to stockholders $ 5,970 Depreciation and amortization $ 3,474 $ 426 $ 36 $ — $ 3,936 $ 5 $ 5,560 $ — $ 9,501 Impairment charges $ 53 $ 463 $ 6 $ — $ 522 $ — $ — $ — $ 522 Equity income $ 7 $ 1,667 $ — $ — $ 1,674 $ — $ 141 $ — $ 1,815 __________ (a) Consists of charges of $1.1 billion related to restructuring actions in Korea in GMI, which is net of noncontrolling interest, and charges of $440 million for ignition switch related legal matters in Corporate. At and For the Nine Months Ended September 30, 2017 GMNA GMI Corporate Eliminations Total GM Cruise GM Eliminations Total Net sales and revenue $ 82,594 $ 16,226 $ 306 $ 99,126 $ — $ 8,899 $ (152 ) $ 107,873 Earnings (loss) before interest and taxes-adjusted $ 9,014 $ 884 $ (574 ) $ 9,324 $ (455 ) $ 895 $ (5 ) $ 9,759 Adjustments(a) $ — $ (540 ) $ (114 ) $ (654 ) $ — $ — $ — (654 ) Automotive interest income 184 Automotive interest expense (430 ) Net income attributable to noncontrolling interests 11 Income before income taxes 8,870 Income tax expense (3,637 ) Income from continuing operations 5,233 Loss from discontinued operations, net of tax (3,935 ) Net (income) attributable to noncontrolling interests (11 ) Net income attributable to stockholders $ 1,287 Depreciation and amortization $ 3,499 $ 535 $ 22 $ (1 ) $ 4,055 $ 1 $ 4,757 $ — $ 8,813 Impairment charges $ 59 $ 207 $ 5 $ — $ 271 $ — $ — $ — $ 271 Equity income $ 8 $ 1,448 $ — $ — $ 1,456 $ — $ 129 $ — $ 1,585 __________ (a) Consists of charges of $460 million related to restructuring actions in India and South Africa in GMI, charges of $80 million associated with the deconsolidation of Venezuela in GMI and charges of $114 million for ignition switch related legal matters in Corporate.

Nature of Operations and Basi_3

Nature of Operations and Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Income Statement
Income before income taxes	$ 2,630	$ 2,430	$ 7,091	$ 8,870
Net income attributable to stockholders	2,534	$ (2,981)	5,970	$ 1,287
Balance Sheet
Equipment on operating leases, net (Note 7)	474		474				$ 1,106
Deferred income taxes	23,242		23,242			$ 23,925	23,544
Other assets	5,946		5,946			5,366	4,929
Accrued liabilities	28,104		28,104			28,324	25,996
Other liabilities	12,261		12,261			12,159	12,394
Retained earnings	20,865		20,865			16,581	17,627
Accumulated other comprehensive loss	(8,321)		(8,321)			(8,109)	(8,011)
GM Financial [Member]
Balance Sheet
GM Financial short-term debt and current portion of long-term debt	27,950		27,950			24,437	$ 24,450
Accounting Standards Update 2014-09 [Member]
Income Statement
Automotive net sales and revenue	32,276		98,242
Automotive and other cost of sales			88,788
Income before income taxes	2,630		7,091
Net income attributable to stockholders	2,534		5,970
Balance Sheet
Equipment on operating leases, net (Note 7)	474		474
Deferred income taxes	23,242		23,242			444
Other assets						195
Accrued liabilities	28,104		28,104			2,328
Other liabilities	12,261		12,261			(235)
Retained earnings	20,865		20,865			(1,336)
Accumulated other comprehensive loss						0
Accounting Standards Update 2014-09 [Member] | GM Financial [Member]
Balance Sheet
GM Financial short-term debt and current portion of long-term debt						0
Accounting Standards Update 2016-01 [Member]
Newly Adopted Accounting Standard, Modified Retrospective Basis [Abstract]
Cumulative effect adjustment						182
Accounting Standards Update 2017-12 and Accounting Standards Update 2018-02 [Member]
Newly Adopted Accounting Standard, Modified Retrospective Basis [Abstract]
Cumulative effect adjustment					$ 108
Accounting Standards Update 2016-01, Accounting Standards Update 2017-12 and Accounting Standards Update 2018-02 [Member]
Balance Sheet
Deferred income taxes						(63)
Other assets						242
Accrued liabilities						0
Other liabilities						0
Retained earnings						290
Accumulated other comprehensive loss						(98)
Accounting Standards Update 2016-01, Accounting Standards Update 2017-12 and Accounting Standards Update 2018-02 [Member] | GM Financial [Member]
Balance Sheet
GM Financial short-term debt and current portion of long-term debt						$ (13)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Income Statement
Automotive net sales and revenue	(683)		281
Automotive and other cost of sales			1,039
Income before income taxes	(691)		(570)
Net income attributable to stockholders	(537)		(432)
Balance Sheet
Equipment on operating leases, net (Note 7)	(954)		(954)
Deferred income taxes	581		581
Accrued liabilities	2,141		2,141
Other liabilities	(396)		(396)
Retained earnings	(1,768)		(1,768)
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Income Statement
Automotive net sales and revenue	32,959		97,961
Automotive and other cost of sales			87,749
Income before income taxes	3,321		7,661
Net income attributable to stockholders	3,071		6,402
Balance Sheet
Equipment on operating leases, net (Note 7)	1,428		1,428
Deferred income taxes	22,661		22,661
Accrued liabilities	25,963		25,963
Other liabilities	12,657		12,657
Retained earnings	$ 22,633		$ 22,633

Significant Accounting Polici_3

Significant Accounting Policies (Details)	9 Months Ended
	Sep. 30, 2018
GM Financial [Member] | Minimum [Member] | Vehicles [Member]
Equipment on Operating Leases, net [Abstract]
Leasing arrangements, contract term	2 years
GM Financial [Member] | Maximum [Member] | Vehicles [Member]
Equipment on Operating Leases, net [Abstract]
Leasing arrangements, contract term	5 years
GM Financial [Member] | Retail Finance Receivables [Member]
Revenue Recognition [Abstract]
Past due threshold term for suspending accrual of finance charge income	60 days
GM Financial [Member] | Commercial Finance Receivables [Member]
Revenue Recognition [Abstract]
Past due threshold term for suspending accrual of finance charge income	90 days
Automotive [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue recognition term, separate and bundled services (less than)	3 years
Automotive [Member] | Vehicles [Member]
Equipment on Operating Leases, net [Abstract]
Leasing arrangements, contract term	7 months

Revenue (Details)

Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Total net sales and revenue (Note 3)	$ 35,791	$ 33,623	$ 108,650	$ 107,873
Operating Segments [Member] | GM Financial [Member]
Disaggregation of Revenue [Line Items]
Leased vehicle income	2,501		7,445
Finance charge income	917		2,667
Other income	100		305
Total net sales and revenue (Note 3)	3,518	3,161	10,417	8,899
Eliminations [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	(12)		(70)
Leased vehicle income	0		0
Finance charge income	(2)		(5)
Other income	(1)		(4)
Total net sales and revenue (Note 3)	(15)	(13)	(79)	(152)
Automotive [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	32,276	30,466	98,242	98,983
Automotive [Member] | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	32,288		98,312
Total net sales and revenue (Note 3)	32,288	30,475	98,312	99,126
Automotive [Member] | Operating Segments [Member] | GMNA [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	27,650		83,969
Total net sales and revenue (Note 3)	27,650	24,819	83,969	82,594
Automotive [Member] | Operating Segments [Member] | GMI [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	4,582		14,188
Total net sales and revenue (Note 3)	4,582	5,576	14,188	16,226
Automotive [Member] | Corporate [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	56		155
Total net sales and revenue (Note 3)	56	80	155	306
GM Financial [Member]
Disaggregation of Revenue [Line Items]
Leased vehicle income	2,501		7,445
Finance charge income	915		2,662
Other income	99		301
Total net sales and revenue (Note 3)	3,515	$ 3,157	10,408	$ 8,890
GM Financial [Member] | Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total net sales and revenue (Note 3)	(3)		(9)
Vehicles and Parts [Member] | Eliminations [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	(11)		(36)
Vehicles and Parts [Member] | Automotive [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	30,490		92,325
Vehicles and Parts [Member] | Automotive [Member] | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	30,501		92,361
Vehicles and Parts [Member] | Automotive [Member] | Operating Segments [Member] | GMNA [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	26,273		79,029
Vehicles and Parts [Member] | Automotive [Member] | Operating Segments [Member] | GMI [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	4,226		13,320
Vehicles and Parts [Member] | Automotive [Member] | Corporate [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	2		12
Used Vehicles [Member] | Eliminations [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	(1)		(34)
Used Vehicles [Member] | Automotive [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	604		2,610
Used Vehicles [Member] | Automotive [Member] | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	605		2,644
Used Vehicles [Member] | Automotive [Member] | Operating Segments [Member] | GMNA [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	582		2,506
Used Vehicles [Member] | Automotive [Member] | Operating Segments [Member] | GMI [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	23		138
Used Vehicles [Member] | Automotive [Member] | Corporate [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	0		0
Services and Other [Member] | Eliminations [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	0		0
Services and Other [Member] | Automotive [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	1,182		3,307
Services and Other [Member] | Automotive [Member] | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	1,182		3,307
Services and Other [Member] | Automotive [Member] | Operating Segments [Member] | GMNA [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	795		2,434
Services and Other [Member] | Automotive [Member] | Operating Segments [Member] | GMI [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	333		730
Services and Other [Member] | Automotive [Member] | Corporate [Member]
Disaggregation of Revenue [Line Items]
Automotive net sales and revenue	$ 54		$ 143

Revenue - Narrative (Details)

Revenue - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2018USD ($)
Revenue from Contract with Customer [Abstract]
Contract liabilities	$ 426	$ 1,200
Deferred revenue expected to be recognized in the remainder of 2018	560	560
Deferred revenue expected to be recognized in 2019	1,000	1,000
Deferred revenue expected to be recognized in 2020	497	497
Deferred revenue expected to be recognized thereafter	$ 600	$ 600

Marketable and Other Securiti_3

Marketable and Other Securities Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Marketable Securities [Line Items]
Cash and cash equivalents	$ 18,435			$ 18,435		$ 15,512
Sale proceeds from investments classified as available-for-sale and sold prior to maturity	1,700		$ 3,700	3,600	$ 5,100
GM Korea [Member]
Marketable Securities [Line Items]
Cash and cash equivalents	364			364
Level 3 [Member]
Marketable Securities [Line Items]
Fair value of equity securities	$ 884	$ 884		$ 884
Level 3 [Member] | Interest Income and Other Non-Operating Income, Net [Member]
Marketable Securities [Line Items]
Unrealized gain on equity securities		$ 142

Marketable and Other Securiti_4

Marketable and Other Securities Fair Value of Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Marketable Securities [Line Items]
Total cash and cash equivalents	$ 18,435	$ 15,512
Total restricted cash	2,423	2,336
Due in one year or less	6,777
Due between one and five years	4,376
Total available-for-sale debt securities with contractual maturities	11,153
GM Cruise [Member]
Marketable Securities [Line Items]
Money market funds	1,800
Cash and Cash Equivalents [Member]
Marketable Securities [Line Items]
Cash and time deposits	7,144	6,962
Total available-for-sale debt securities with contractual maturities	5,922	5,736
Cash and Cash Equivalents [Member] | Level 1 [Member]
Marketable Securities [Line Items]
Money market funds	5,369	2,814
Marketable Debt Securities [Member]
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	5,916	8,313
Restricted cash - cash equivalents [Member]
Marketable Securities [Line Items]
Cash and cash equivalents	198	219
Restricted cash - cash equivalents [Member] | Level 1 [Member]
Marketable Securities [Line Items]
Money market funds	2,225	2,117
U.S. government and agencies [Member] | Cash and Cash Equivalents [Member] | Level 2 [Member]
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	1,115	750
U.S. government and agencies [Member] | Marketable Debt Securities [Member] | Level 2 [Member]
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	1,229	3,310
Corporate debt [Member] | Cash and Cash Equivalents [Member] | Level 2 [Member]
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	2,774	3,032
Corporate debt [Member] | Marketable Debt Securities [Member] | Level 2 [Member]
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	3,416	3,665
Mortgage and asset-backed [Member] | Marketable Debt Securities [Member] | Level 2 [Member]
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	685	635
Sovereign debt [Member] | Cash and Cash Equivalents [Member] | Level 2 [Member]
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	2,033	1,954
Sovereign debt [Member] | Marketable Debt Securities [Member] | Level 2 [Member]
Marketable Securities [Line Items]
Total available-for-sale debt securities with contractual maturities	$ 586	$ 703

Marketable and Other Securiti_5

Marketable and Other Securities Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Marketable Securities [Line Items]
Cash and cash equivalents	$ 18,435	$ 15,512
Total	20,858	17,848	$ 15,880	$ 15,160
Other assets [Member]
Marketable Securities [Line Items]
Restricted cash	198	$ 219
Continuing Operations [Member]
Marketable Securities [Line Items]
Cash and cash equivalents	18,435
Total	20,858		$ 15,315
Continuing Operations [Member] | Other current assets [Member]
Marketable Securities [Line Items]
Restricted cash	1,883
Continuing Operations [Member] | Other assets [Member]
Marketable Securities [Line Items]
Restricted cash	$ 540

GM Financial Receivables and _3

GM Financial Receivables and Transactions Summary of Finance Receivables (Details) - GM Financial [Member] - USD ($) $ in Millions	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Finance Receivables [Line Items]
Finance receivables, collectively evaluated for impairment, net of fees	$ 46,043		$ 40,421
Finance receivables, individually evaluated for impairment, net of fees	2,375		2,250
GM Financial receivables	48,418		42,671
Less: allowance for loan losses	(900)	$ (873)	(942)	$ (948)	$ (893)	$ (805)
GM Financial receivables, net	47,518		41,729
Retail Finance Receivables [Member]
Finance Receivables [Line Items]
Finance receivables, collectively evaluated for impairment, net of fees	35,442		30,486
Finance receivables, individually evaluated for impairment, net of fees	2,308		2,228
GM Financial receivables	37,750		32,714
Less: allowance for loan losses	(839)		(889)
GM Financial receivables, net	36,911		31,825
Commercial Finance Receivables [Member]
Finance Receivables [Line Items]
Finance receivables, collectively evaluated for impairment, net of fees	10,601		9,935
Finance receivables, individually evaluated for impairment, net of fees	67		22
GM Financial receivables	10,668		9,957
Less: allowance for loan losses	(61)		(53)
GM Financial receivables, net	10,607		9,904
Level 2 [Member]
Finance Receivables [Line Items]
Fair value of GM Financial receivables	10,607		9,904
Level 3 [Member]
Finance Receivables [Line Items]
Fair value of GM Financial receivables	$ 36,551		$ 31,831

GM Financial Receivables and _4

GM Financial Receivables and Transactions Allowance for Loan Losses (Details) - GM Financial [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses at beginning of period	$ 873	$ 893	$ 942	$ 805
Provision for loan losses	180	204	444	573
Charge-offs	(285)	(287)	(878)	(858)
Recoveries	130	135	398	420
Effect of foreign currency	2	3	(6)	8
Allowance for loan losses at end of period	900	$ 948	900	$ 948
Collective allowance	575		575		$ 611
Specific allowance	$ 325		$ 325		$ 331

GM Financial Receivables and _5

GM Financial Receivables and Transactions Retail Finance Receivables Delinquencies and TDRs (Details) - GM Financial [Member] $ in Millions	Sep. 30, 2018USD ($)score	Dec. 31, 2017USD ($)score	Sep. 30, 2017USD ($)
Delinquent Contracts [Abstract]
Finance receivables, individually evaluated for impairment, net of fees	$ 2,375	$ 2,250
Allowance for loan losses - TDRs	$ 325	$ 331
Retail Finance Receivables [Member]
Financing Receivable, Recorded Investment, Additional Information [Abstract]
Percentage of receivables with sub-prime credit scores	27.00%	33.00%
Sub-prime FICO score | score	620	620
Retail finance receivables, nonaccrual status	$ 847	$ 778
Delinquent Contracts [Abstract]
Past Due Amount	$ 1,853		$ 1,752
Percent of Contractual Amount Due	4.90%		5.40%
Finance receivables, individually evaluated for impairment, net of fees	$ 2,308	2,228
Allowance for loan losses - TDRs	317	$ 328
31-to-60 days delinquent [Member] | Retail Finance Receivables [Member]
Delinquent Contracts [Abstract]
Past Due Amount	$ 1,302		$ 1,176
Percent of Contractual Amount Due	3.50%		3.60%
Greater-than-60 days delinquent [Member] | Retail Finance Receivables [Member]
Delinquent Contracts [Abstract]
Past Due Amount	$ 498		$ 521
Percent of Contractual Amount Due	1.30%		1.60%
Total finance receivables more than 30 days delinquent [Member] | Retail Finance Receivables [Member]
Delinquent Contracts [Abstract]
Past Due Amount	$ 1,800		$ 1,697
Percent of Contractual Amount Due	4.80%		5.20%
In repossession [Member] | Retail Finance Receivables [Member]
Delinquent Contracts [Abstract]
Past Due Amount	$ 53		$ 55
Percent of Contractual Amount Due	0.10%		0.20%

GM Financial Receivables and _6

GM Financial Receivables and Transactions Commercial Finance Receivables Credit Quality Indicators (Details) - GM Financial [Member] - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
GM Financial receivables	$ 48,418	$ 42,671
Commercial Finance Receivables [Member]
Financing Receivable, Recorded Investment [Line Items]
GM Financial receivables	10,668	9,957
Commercial Finance Receivables [Member] | Group I - Dealers with superior financial metrics [Member]
Financing Receivable, Recorded Investment [Line Items]
GM Financial receivables	2,077	1,915
Commercial Finance Receivables [Member] | Group II - Dealers with strong financial metrics [Member]
Financing Receivable, Recorded Investment [Line Items]
GM Financial receivables	3,905	3,465
Commercial Finance Receivables [Member] | Group III - Dealers with fair financial metrics [Member]
Financing Receivable, Recorded Investment [Line Items]
GM Financial receivables	3,197	3,239
Commercial Finance Receivables [Member] | Group IV - Dealers with weak financial metrics [Member]
Financing Receivable, Recorded Investment [Line Items]
GM Financial receivables	960	997
Commercial Finance Receivables [Member] | Group V - Dealers warranting special mention due to potential weaknesses [Member]
Financing Receivable, Recorded Investment [Line Items]
GM Financial receivables	422	260
Commercial Finance Receivables [Member] | Group VI - Dealers with loans classified as substandard, doubtful or impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
GM Financial receivables	$ 107	$ 81

GM Financial Receivables and _7

GM Financial Receivables and Transactions Intercompany Transactions (Details) - USD ($) $ in Millions	Oct. 26, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
GM Financial [Member]
Related Party Transaction [Line Items]
Financing receivable, net		$ 47,518		$ 47,518		$ 41,729
GM Financial [Member] | Subsequent Event [Member]
Related Party Transaction [Line Items]
Common stock dividends declared	$ 375
GM Financial [Member] | Commercial Finance Receivables [Member]
Related Party Transaction [Line Items]
Financing receivable, net		10,607		10,607		9,904
GM Financial [Member] | Retail Finance Receivables [Member]
Related Party Transaction [Line Items]
Financing receivable, net		36,911		36,911		31,825
Intersegment Eliminations [Member]
Related Party Transaction [Line Items]
Cash payments to GM Financial		1,100	$ 1,100	2,800	$ 3,300
Intersegment Eliminations [Member] | GM Financial [Member]
Related Party Transaction [Line Items]
Subvention receivable		735		735		306
Interest subvention earned on finance receivables		142	129	409	361
Leased vehicle subvention earned		827	$ 786	2,438	$ 2,246
Intersegment Eliminations [Member] | GM Financial [Member] | Commercial Finance Receivables [Member]
Related Party Transaction [Line Items]
Financing receivable, net		437		437		355
Commercial loan funding payable		86		86		90
Intersegment Eliminations [Member] | GM Financial [Member] | Retail Finance Receivables [Member]
Related Party Transaction [Line Items]
Financing receivable, net		$ 125		$ 125		$ 88

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Total productive material, supplies and work in process	$ 4,634	$ 4,203
Finished product, including service parts	6,700	6,460
Total inventories	$ 11,334	$ 10,663

Equipment on Operating Leases_2

Equipment on Operating Leases (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Property Subject to or Available for Operating Lease [Line Items]
Equipment on operating leases, net	$ 44,128		$ 44,128		$ 42,882
Operating Leases, Future Minimum Payments Receivable [Abstract]
Total	12,892		12,892
Vehicles [Member]
Property Subject to or Available for Operating Lease [Line Items]
Equipment on operating leases	55,840		55,840		53,947
Less: accumulated depreciation	(11,238)		(11,238)		(9,959)
Equipment on operating leases, net	44,602		44,602		43,988
Depreciation expense	1,900	$ 1,800	5,600	$ 4,900
Vehicles [Member] | GM Financial [Member]
Property Subject to or Available for Operating Lease [Line Items]
Equipment on operating leases, net	44,100		44,100		$ 42,900
Operating Leases, Future Minimum Payments Receivable [Abstract]
2,018	1,882		1,882
2,019	6,260		6,260
2,020	3,570		3,570
2,021	1,077		1,077
2,022	97		97
Thereafter	$ 6		$ 6

Equity In Net Assets of Nonco_3

Equity In Net Assets of Nonconsolidated Affiliates (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Equity income	$ 530	$ 500	$ 1,815	$ 1,585
Equity Method Investee [Member]
Schedule of Equity Method Investments [Line Items]
Dividends received		382	2,000	2,000
Undistributed earnings	2,000		2,000		$ 2,200
Automotive China JVs equity income [Member]
Schedule of Equity Method Investments [Line Items]
Equity income	485	459	$ 1,674	1,472
Change in ownership percentage			0.00%
Equity Method Investment, Summarized Financial Information, Revenue	11,461	12,161	$ 37,781	34,177
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	999	964	3,370	2,912
Other joint ventures equity income [Member]
Schedule of Equity Method Investments [Line Items]
Equity income	$ 45	$ 41	$ 141	$ 113

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Millions	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
GM Financial equipment on operating leases, net	$ 44,128		$ 42,882
GM Financial [Member]
Variable Interest Entity [Line Items]
GM Financial receivables, net of fees – current	23,432		20,521
GM Financial receivables, net of fees – non-current	24,086		21,208
GM Financial short-term debt and current portion of long-term debt	27,950	$ 24,437	24,450
GM Financial long-term debt	58,427		56,267
Consolidated VIE [Member] | GM Financial [Member]
Variable Interest Entity [Line Items]
Restricted cash – current	1,733		1,740
Restricted cash – non-current	487		527
GM Financial receivables, net of fees – current	16,502		15,141
GM Financial receivables, net of fees – non-current	13,080		12,944
GM Financial equipment on operating leases, net	21,252		22,222
GM Financial short-term debt and current portion of long-term debt	19,086		18,972
GM Financial long-term debt	$ 20,392		$ 20,356

Automotive and GM Financial D_3

Automotive and GM Financial Debt (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Automotive [Member]
Debt Instrument [Line Items]
Carrying Amount	$ 15,963	$ 13,502
Fair Value	16,352	15,088
Automotive [Member] | Level 1 [Member]
Debt Instrument [Line Items]
Fair Value	13,971	13,202
Automotive [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Fair Value	2,381	1,886
GM Financial [Member]
Debt Instrument [Line Items]
Carrying Amount	86,377	80,717
Fair Value	86,741	81,937
GM Financial [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Carrying Amount	39,722	39,887
Fair Value	39,679	39,948
GM Financial [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Carrying Amount	46,655	40,830
Fair Value	47,062	41,989
GM Financial [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Fair Value	84,693	79,623
GM Financial [Member] | Level 3 [Member]
Debt Instrument [Line Items]
Fair Value	$ 2,048	$ 2,314

Automotive and GM Financial D_4

Automotive and GM Financial Debt Narrative (Details) $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended
	Oct. 31, 2018USD ($)	Apr. 30, 2018USD ($)credit_faciliy	Sep. 30, 2018USD ($)	Sep. 30, 2018USD ($)	Mar. 31, 2018USD ($)
Debt Instrument [Line Items]
Number of renewed credit facilities | credit_faciliy		2
Number of new credit facilities | credit_faciliy		1
Line of Credit [Member]
Debt Instrument [Line Items]
Aggregate borrowing capacity		$ 16,500			$ 14,500
Line of Credit [Member] | Three Year Revolving Credit Facility April 2018 [Member]
Debt Instrument [Line Items]
Aggregate borrowing capacity		$ 4,000
Debt term		3 years
Line of Credit [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Aggregate borrowing capacity		$ 1,100
Line of Credit [Member] | Five-Year Revolving Credit Facility April 2018 [Member]
Debt Instrument [Line Items]
Aggregate borrowing capacity		$ 10,500
Debt term		5 years
Unsecured Debt [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Principal amount			$ 2,100	$ 2,100
Weighted average interest rate (percent)			5.03%	5.03%
GM Financial [Member] | Line of Credit [Member] | $2.0 Billion Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Aggregate borrowing capacity		$ 2,000
Debt term		364 days
GM Financial [Member] | Secured Debt [Member] | Line of Credit [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total net additional borrowing capacity				$ 345
GM Financial [Member] | Secured Debt [Member] | Notes Payable, Other Payables [Member] | Securitization notes payable [Member]
Debt Instrument [Line Items]
Principal amount			$ 16,300	$ 16,300
Weighted average interest rate (percent)			2.89%	2.89%
GM Financial [Member] | Unsecured Debt [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Principal amount			$ 7,200	$ 7,200
Weighted average interest rate (percent)			3.17%	3.17%
U.S. [Member] | GM Financial [Member] | Unsecured Debt [Member] | Commercial Paper [Member]
Debt Instrument [Line Items]
Unsecured commercial paper			$ 1,500	$ 1,500
Non-U.S. [Member] | U.K. and Canada [Member] | Pension Plan [Member]
Debt Instrument [Line Items]
Contributions to pension plans			$ 584
Subsequent Event [Member]
Debt Instrument [Line Items]
Debt repayment	$ 1,500

Derivative Financial Instrume_3

Derivative Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Automotive [Member] | Not Designated as Hedges [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	$ 3,652	$ 3,652	$ 4,676
Automotive [Member] | Not Designated as Hedges [Member] | PSA Group [Member] | Interest Income and Other Non-Operating Income, Net [Member]
Derivative [Line Items]
Gains on derivative instruments	171	324
Automotive [Member] | Not Designated as Hedges [Member] | Fair Value Level 2 [Member] | PSA Group [Member] | Other assets [Member]
Derivative [Line Items]
Fair value of derivative instruments	1,100	1,100	764
Automotive [Member] | Not Designated as Hedges [Member] | Foreign Currency [Member] | Fair Value Level 2 [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	2,970	2,970	4,022
Automotive [Member] | Not Designated as Hedges [Member] | Commodity [Member] | Fair Value Level 2 [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	636	636	606
Automotive [Member] | Not Designated as Hedges [Member] | PSA Warrants [Member] | Fair Value Level 2 [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	46	46	48
GM Financial [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	108,543	108,543	98,000
GM Financial [Member] | Designated as Hedges [Member] | Cash Flow Hedges [Member] | Interest Rate Contract [Member] | Fair Value Level 2 [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	905	905	2,177
GM Financial [Member] | Designated as Hedges [Member] | Cash Flow Hedges [Member] | Foreign Currency [Member] | Fair Value Level 2 [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	2,108	2,108	1,574
GM Financial [Member] | Designated as Hedges [Member] | Fair Value Hedges [Member] | Interest Rate Contract [Member] | Fair Value Level 2 [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	10,510	10,510	11,110
GM Financial [Member] | Designated as Hedges [Member] | Fair Value Hedges [Member] | Interest Rate Contract [Member] | Fair Value Level 2 [Member] | Other liabilities [Member]
Derivative [Line Items]
Fair value of derivative instruments	510	510	290
GM Financial [Member] | Not Designated as Hedges [Member] | Interest Rate Contract [Member] | Fair Value Level 2 [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	93,162	93,162	81,938
GM Financial [Member] | Not Designated as Hedges [Member] | Interest Rate Contract [Member] | Fair Value Level 2 [Member] | Other liabilities [Member]
Derivative [Line Items]
Fair value of derivative instruments	670	670	207
GM Financial [Member] | Not Designated as Hedges [Member] | Interest Rate Contract [Member] | Fair Value Level 2 [Member] | Other assets [Member]
Derivative [Line Items]
Fair value of derivative instruments	551	551	329
GM Financial [Member] | Not Designated as Hedges [Member] | Foreign Currency [Member] | Fair Value Level 2 [Member]
Derivative [Line Items]
Notional amount, derivative financial instruments	$ 1,858	$ 1,858	$ 1,201

Derivative Financial Instrume_4

Derivative Financial Instruments Balance Sheet Location of Cumulative Basis Adjustments (Details) - Fair Value Hedges [Member] - Long-term Debt [Member] - GM Financial [Member] $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)
Derivatives, Fair Value [Line Items]
Carrying Amount of Hedged Items	$ 15,363
Cumulative Amount of Fair Value Hedging Adjustments on Hedging Relationships	735
Cumulative fair value adjustment on discontinued hedging relationships	$ 178

Product Warranty and Related _3

Product Warranty and Related Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Product Warranty and Related Liabilities [Roll Forward]
Warranty balance at beginning of period	$ 7,990	$ 8,890	$ 8,332	$ 9,069
Warranties issued and assumed in period – recall campaigns	101	173	515	527
Warranties issued and assumed in period – product warranty	542	481	1,599	1,586
Payments	(723)	(787)	(2,175)	(2,382)
Adjustments to pre-existing warranties	(209)	(317)	(426)	(405)
Effect of foreign currency and other	(8)	39	(152)	84
Warranty balance at end of period	$ 7,693	$ 8,479	$ 7,693	$ 8,479

Pensions and Other Postretire_3

Pensions and Other Postretirement Benefits - Schedule of Net Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Non-service cost components of net periodic pension and OPEB income	$ 401	$ 369	$ 1,200	$ 1,000
Global OPEB Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Service cost	5	4	15	14
Interest cost	49	51	147	149
Expected return on plan assets	0	0	0	0
Amortization of prior service cost (credit)	(4)	(3)	(11)	(10)
Amortization of net actuarial (gains) losses	14	8	40	24
Curtailments, settlements and other	0	0	0	0
Net periodic pension and OPEB (income) expense	64	60	191	177
U.S. [Member] | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Service cost including administrative expenses	83	79	248	237
Interest cost	513	536	1,538	1,608
Expected return on plan assets	(972)	(919)	(2,917)	(2,757)
Amortization of prior service cost (credit)	(1)	(1)	(3)	(3)
Amortization of net actuarial (gains) losses	2	(2)	7	(5)
Curtailments, settlements and other	0	0	0	0
Net periodic pension and OPEB (income) expense	(375)	(307)	(1,127)	(920)
Non-U.S. [Member] | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Service cost	33	45	138	131
Interest cost	112	115	349	366
Expected return on plan assets	(201)	(185)	(621)	(528)
Amortization of prior service cost (credit)	1	2	3	4
Amortization of net actuarial (gains) losses	35	29	109	124
Curtailments, settlements and other	18	0	18	0
Net periodic pension and OPEB (income) expense	(2)	$ 6	(4)	$ 97
Estimated contributions in 2018	1,600		1,600
Non-U.S. [Member] | Pension Plan [Member] | U.K. and Canada [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Contributions to pension plans	584
Non-U.S. [Member] | Pension Plan [Member] | Korea [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Estimated contributions in 2018	$ 300		$ 300

Commitments and Contingencies L

Commitments and Contingencies Litigation-Related Liability and Tax Administrative Matters (Details)	1 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2018USD ($)jurisdictionactionshares	Sep. 30, 2015USD ($)	Sep. 30, 2018USD ($)actioncaseemployeeshareholdershares	Dec. 31, 2016USD ($)	Oct. 12, 2018USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)state	Aug. 31, 2017state
Loss Contingencies [Line Items]
Maximum liability, guarantees	$ 6,000,000,000		$ 6,000,000,000				$ 5,100,000,000
Indirect Tax Matters [Member]
Loss Contingencies [Line Items]
Estimate of possible loss	900,000,000		$ 900,000,000
Texas state (MDL) [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of additional bellwether trials | case			2
Brazil [Member] | Foreign Tax Authority [Member]
Loss Contingencies [Line Items]
Estimated potential recovery	$ 1,200,000,000		$ 1,200,000,000
Ignition Switch Recall Litigations - Economic-loss cases [Member]
Loss Contingencies [Line Items]
Number of pending claims | action	100		100
Ignition Switch Recall Litigations - Economic-loss cases [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of jurisdictions | jurisdiction	27
Ignition Switch Recall Litigations - July 2009 Sale Order [Member]
Loss Contingencies [Line Items]
Number of states | state								16
Ignition Switch Recall Litigations - July 2009 Sale Order [Member] | Granted Motion to Dismiss [Member]
Loss Contingencies [Line Items]
Number of states | state								7
Ignition Switch Recall Litigations - July 2009 Sale Order [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of states | state							8	9
Ignition Switch Recall Litigations - Lost Personal Time and Unjust Enrichment Claims [Member]
Loss Contingencies [Line Items]
Number of jurisdictions | jurisdiction	47
Ignition Switch Recall Litigations - Lost Personal Time and Unjust Enrichment Claims [Member] | Granted Motion to Dismiss [Member]
Loss Contingencies [Line Items]
Number of jurisdictions | jurisdiction	41
Ignition Switch Recall Litigations - Shareholder Class Action [Member]
Loss Contingencies [Line Items]
Litigation settlement amount				$ 300,000,000
Number of shareholders filing an appeal | shareholder			1
Ignition Switch Recall Litigations - Investigation by the Office [Member]
Loss Contingencies [Line Items]
Damages paid		$ 900,000,000
Korea Wage Litigation - Hourly [Member]
Loss Contingencies [Line Items]
Number of plaintiffs | employee			10,000
Number of employees in the case | employee			5
Estimate of possible loss	$ 580,000,000		$ 580,000,000
Korea Wage Litigation - Salaried [Member]
Loss Contingencies [Line Items]
Estimate of possible loss	160,000,000		160,000,000
Korea Wage Litigation - Former Subcontract Workers [Member]
Loss Contingencies [Line Items]
Estimate of possible loss	150,000,000		150,000,000
Accrued liabilities and Other liabilities [Member]
Loss Contingencies [Line Items]
Estimated litigation liability	1,400,000,000		1,400,000,000				$ 930,000,000
Amended and Restated Master Sale and Purchase Agreement [Member] | Ignition Switch Recall Litigations - Contingently Issuable Shares [Member]
Loss Contingencies [Line Items]
Allowed general unsecured claims amount	$ 35,000,000,000		$ 35,000,000,000
Contingently issuable shares (in shares) | shares	30,000,000		30,000,000
Amount of allowed general unsecured claims						$ 31,900,000,000
Amended and Restated Master Sale and Purchase Agreement [Member] | Ignition Switch Recall Litigations - Contingently Issuable Shares [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Value of contingently issuable shares					$ 1,000,000,000

Commitments and Contingencies O

Commitments and Contingencies Other Contingencies (Details)	Oct. 15, 2018action	Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Loss Contingencies [Line Items]
Maximum liability, guarantees		$ 6,000,000,000	$ 5,100,000,000
Minimum [Member]
Loss Contingencies [Line Items]
Indirect tax-related escrow deposit		200,000,000
Maximum [Member]
Loss Contingencies [Line Items]
Indirect tax-related escrow deposit		500,000,000
Accrued Liabilities, Current and Other Liabilities, Noncurrent [Member]
Loss Contingencies [Line Items]
Product liability		557,000,000	$ 595,000,000
Takata DIR [Member]
Loss Contingencies [Line Items]
Warranty provision related to DIR's		0
Estimate of maximum possible loss		$ 1,200,000,000
Takata DIR [Member] | U.S. [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of pending claims | action	3
Takata DIR [Member] | Mexico [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of pending claims | action	1
Takata DIR [Member] | Canada [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of pending claims | action	3

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Oct. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense	$ 100	$ 2,316	$ 1,085	$ 3,637
Tax benefit from U.S. tax reform	157		157
Tax expense, entities included in effective tax rate calculation		583		2,100
Tax expense from change in deferred tax asset valuation allowance		$ 2,300		$ 2,300
Net deferred tax assets	$ 22,400		$ 22,400
Operating Loss Carryforwards [Line Items]
Tax expense related to tax reform legislation					$ 7,300
Tax expense related to tax reform legislation, updated					$ 7,100
Forecast [Member] | Germany [Member] | Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards						$ 3,300
Deferred tax assets						$ 1,000

Restructuring and Other Initi_3

Restructuring and Other Initiatives (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 274	$ 493	$ 227	$ 268
Additions, interest accretion and other	8	43	600	333
Payments	(72)	(75)	(567)	(150)
Revisions to estimates and effect of foreign currency	(3)	(7)	(53)	3
Balance at end of period	$ 207	454	207	454
Gunsan Korea Plant [Member] | Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Termination benefits			495
Gunsan Korea Plant [Member] | Non-cash Asset Impairments and Other Charges [Member]
Restructuring Reserve [Roll Forward]
Pre-tax restructuring costs			537
Gunsan Korea Plant [Member] | Employee Severance and Statutory Pension Payments [Member]
Restructuring Reserve [Roll Forward]
Payments			(748)
GMI [Member] | Gunsan Korea Plant [Member] | Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Pre-tax restructuring costs			$ 1,000
GMI [Member] | Separation Programs In South Africa And India [Member]
Restructuring Reserve [Roll Forward]
Pre-tax restructuring costs				460
GMI [Member] | Separation Programs In South Africa And India [Member] | Asset Impairments, Sales Incentives, Inventory Provisions and Other Restructuring Costs [Member]
Restructuring Reserve [Roll Forward]
Pre-tax restructuring costs				297
GMI [Member] | Separation Programs In South Africa And India [Member] | Dealer Restructuring, Employee Severance and Contract Termination Costs [Member]
Restructuring Reserve [Roll Forward]
Pre-tax restructuring costs				163
GMI [Member] | Separation Programs in Australia, Korea, South Africa, India and Chevrolet Europe [Member]
Restructuring Reserve [Roll Forward]
Total cost incurred to date		$ 883		$ 883	$ 892

Stockholders' Equity and Nonc_3

Stockholders' Equity and Noncontrolling Interests Preferred and Common Stock (Details) - USD ($)	1 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2027	May 31, 2018	Dec. 31, 2017
Stockholders' Equity Note [Abstract]
Preferred stock shares authorized (in shares)	2,000,000,000			2,000,000,000		2,000,000,000				2,000,000,000
Common stock shares authorized (in shares)	5,000,000,000			5,000,000,000		5,000,000,000				5,000,000,000
Common stock shares issued (in shares)	1,400,000,000			1,400,000,000		1,400,000,000				1,400,000,000
Common stock shares outstanding (in shares)	1,400,000,000			1,400,000,000		1,400,000,000				1,400,000,000
Common shares purchased during period (in shares)						3,000,000	86,000,000
Common shares purchased during period						$ 100,000,000	$ 2,994,000,000
Total dividends paid on common stock				$ 537,000,000	$ 546,000,000	1,608,000,000	1,683,000,000
Class of Stock [Line Items]
Maximum financial guarantees	$ 6,000,000,000			6,000,000,000		6,000,000,000				$ 5,100,000,000
GM Cruise Holdings LLC [Member]
Class of Stock [Line Items]
Investment amount		$ 1,100,000,000
GM Korea [Member] | Forecast [Member]
Class of Stock [Line Items]
Planned capital expenditures								$ 2,000,000,000
GM Korea [Member] | Financial Guarantee [Member]
Class of Stock [Line Items]
Maximum financial guarantees	2,800,000,000			2,800,000,000		$ 2,800,000,000
Convertible Preferred Shares [Member] | GM Cruise Holdings LLC [Member]
Class of Stock [Line Items]
Proceeds from issuance of preferred stock		$ 900,000,000
Annual dividend rate						7.00%
SoftBank Investment Holdings [Member] | Convertible Preferred Shares [Member] | GM Cruise Holdings LLC [Member]
Class of Stock [Line Items]
Ownership interest		10.90%
Additional purchase amount	1,350,000,000			1,350,000,000		$ 1,350,000,000
Korea Development Bank [Member] | Class B Preferred Shares [Member] | GM Korea [Member]
Class of Stock [Line Items]
Proceeds from issuance of preferred stock		$ 361,000,000
Annual dividend rate						1.00%
Period to call preferred shares		6 years
Preferred stock purchase arrangement									$ 750,000,000
GM Financial [Member] | Fixed-to-Floating Rate Cumulative Perpetual Preferred Stock, Series B [Member]
Class of Stock [Line Items]
Preferred stock issued	$ 500,000,000			$ 500,000,000		$ 500,000,000
Preferred stock par value (in dollars per share)	$ 0.01			$ 0.01		$ 0.01
Preferred stock liquidation preference (in dollars per share)	$ 1,000			$ 1,000		$ 1,000
Annual dividend rate	6.50%
GM Financial [Member] | Fixed-to-Floating Rate Cumulative Perpetual Preferred Stock, Series A [Member]
Class of Stock [Line Items]
Preferred stock issued			$ 1,000,000,000		$ 1,000,000,000		$ 1,000,000,000
Preferred stock par value (in dollars per share)			$ 0.01		$ 0.01		$ 0.01
Preferred stock liquidation preference (in dollars per share)			$ 1,000		$ 1,000		$ 1,000
Annual dividend rate			5.75%

Stockholders' Equity and Nonc_4

Stockholders' Equity and Noncontrolling Interests Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance at beginning of period			$ 36,200	$ 44,075
Other comprehensive income (loss), net of tax	$ (150)	$ 1,584	(217)	1,545
Balance at end of period	40,908	43,477	40,908	43,477
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance at beginning of period	(1,826)	(2,162)	(1,606)	(2,355)
Other comprehensive income (loss) and noncontrolling interests, net of reclassification adjustment, tax and impact of adoption of accounting standards	(215)	370	(435)	563
Balance at end of period	(2,041)	(1,792)	(2,041)	(1,792)
Defined benefit plans [Member]
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance at beginning of period	(6,290)	(7,208)	(6,398)	(6,968)
Other comprehensive income (loss) before reclassification adjustment, net of tax and impact of adoption of accounting standards	(4)	87	16	(256)
Reclassification adjustment, net of tax	63	1,126	151	1,229
Other comprehensive income (loss), net of tax	59	1,213	167	973
Balance at end of period	$ (6,231)	(5,995)	$ (6,231)	(5,995)
Opel/Vauxhall Business [Member] | Discontinued Operations [Member] | Defined benefit plans [Member]
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Reclassification adjustment, net of tax		$ 1,200		$ 1,200

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic
Income from continuing operations	$ 2,534	$ 115	$ 6,040	$ 5,222
Less: cumulative dividends on subsidiary preferred stock	(31)	(2)	(60)	(2)
Income from continuing operations attributable to common stockholders	2,503	113	5,980	5,220
Loss from discontinued operations, net of tax	0	3,096	70	3,935
Net income (loss) attributable to common stockholders	$ 2,503	$ (2,983)	$ 5,910	$ 1,285
Weighted-average common shares outstanding - basic (in shares)	1,412	1,445	1,410	1,483
Basic earnings per common share – continuing operations (in dollars per share)	$ 1.77	$ 0.08	$ 4.24	$ 3.52
Basic loss per common share – discontinued operations (in dollars per share)	0	2.14	0.05	2.65
Basic earnings (loss) per common share (in dollars per share)	$ 1.77	$ (2.06)	$ 4.19	$ 0.87
Diluted
Income from continuing operations attributable to common stockholders – diluted	$ 2,503	$ 113	$ 5,980	$ 5,220
Loss from discontinued operations, net of tax – diluted	0	3,096	70	3,935
Net income (loss) attributable to common stockholders – diluted	$ 2,503	$ (2,983)	$ 5,910	$ 1,285
Weighted-average common shares outstanding - basic (in shares)	1,412	1,445	1,410	1,483
Dilutive effect of warrants and awards under stock incentive plans (in shares)	19	27	21	24
Weighted-average common shares outstanding - diluted (in shares)	1,431	1,472	1,431	1,507
Diluted earnings per common share – continuing operations (in dollars per share)	$ 1.75	$ 0.08	$ 4.18	$ 3.46
Diluted loss per common share – discontinued operations (in dollars per share)	0	2.11	0.05	2.61
Diluted earnings (loss) per common share (in dollars per share)	$ 1.75	$ (2.03)	$ 4.13	$ 0.85
Potentially dilutive securities (in shares)	4	6	4	6

Discontinued Operations Narrati

Discontinued Operations Narrative (Details) - USD ($) $ in Millions	Oct. 31, 2017	Jul. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations, net of tax			$ 0	$ 3,096		$ 70	$ 3,935
Discontinued Operations [Member] | Opel/Vauxhall Business and Fincos [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Charge at closing	$ 6,200
Loss from discontinued operations, net of tax			0	3,096		70	3,935
Income tax expense (benefit)			0	1,756		0	1,385
Other expense items			0	74		0	72
Disposal loss				3,100			$ 3,700
Discontinued Operations [Member] | Opel/Vauxhall Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net consideration for transferred business		$ 1,400
Cash received from sale		1,100
Warrants received		808
De-risking premium payment		$ 478		478
Payment to PSA Group at closing for assumed underfunded pension liabilities			3,400
Charge at closing				5,400
Loss from discontinued operations, net of tax				3,100
Income tax expense (benefit)				$ 2,300
Other expense items					$ 421
Total net sales and revenue transactions with discontinued operations			339			1,500
Purchases and expenses with discontinued operations			$ 297			1,100
Discontinued Operations [Member] | Opel/Vauxhall Business [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash payments used in operating activities						1,500
Cash receipts provided by operating activities						$ 1,900
Discontinued Operations [Member] | Fincos [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal loss					$ 324

Discontinued Operations Financi

Discontinued Operations Financial Information about Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations, net of tax	$ 0	$ 3,096		$ 70	$ 3,935
Discontinued Operations [Member] | Opel/Vauxhall Business and Fincos [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Automotive net sales and revenue	0	1,553		0	11,257
GM Financial net sales and revenue	0	147		0	414
Total net sales and revenue	0	1,700		0	11,671
Automotive and other cost of sales	0	1,583		0	11,049
GM Financial interest, operating and other expenses	0	99		0	301
Automotive and other selling, general, and administrative expense	0	134		0	813
Other expense items	0	74		0	72
Loss from discontinued operations before taxes	0	190		0	564
Loss on sale of discontinued operations before taxes	0	1,150		70	1,986
Total loss from discontinued operations before taxes	0	1,340		70	2,550
Income tax expense (benefit)	0	1,756		0	1,385
Loss from discontinued operations, net of tax	$ 0	3,096		$ 70	3,935
Disposal loss		3,100			3,700
Discontinued Operations [Member] | Opel/Vauxhall Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other expense items			$ 421
Income tax expense (benefit)		2,300
Loss from discontinued operations, net of tax		3,100
Amount of deferred tax assets transferred		$ 2,000			$ 2,000

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net sales and revenue	$ 35,791	$ 33,623	$ 108,650	$ 107,873
Earnings (loss) before interest and taxes-adjusted	3,153	2,523	8,955	9,759
Adjustments	(440)	0	(1,578)	(654)
Net income (loss) attributable to noncontrolling interests	(4)	(1)	(34)	11
Income before income taxes	2,630	2,430	7,091	8,870
Income tax benefit (expense)	(100)	(2,316)	(1,085)	(3,637)
Income from continuing operations	2,530	114	6,006	5,233
(Loss) from discontinued operations, net of tax	0	(3,096)	(70)	(3,935)
Net income (loss) attributable to stockholders	2,534	(2,981)	5,970	1,287
Equity in net assets of nonconsolidated affiliates	9,155	8,820	9,155	8,820	$ 9,073
Goodwill and intangible assets, net	5,651	5,854	5,651	5,854	5,849
Total assets	225,711	229,502	225,711	229,502	$ 212,482
Depreciation and amortization	3,305	3,130	9,501	8,813
Impairment charges	8	17	522	271
Equity income	530	500	1,815	1,585
Automotive [Member]
Segment Reporting Information [Line Items]
Automotive interest income	82	59	218	184
Automotive interest expense	(161)	(151)	(470)	(430)
GMI [Member] | Separation Programs In Korea [Member]
Segment Reporting Information [Line Items]
Pre-tax restructuring costs			1,100
GMI [Member] | Separation Programs In South Africa And India [Member]
Segment Reporting Information [Line Items]
Pre-tax restructuring costs				460
GMI [Member] | Separation Programs In Venezuela [Member]
Segment Reporting Information [Line Items]
Deconsolidation loss				80
Operating Segments [Member] | Automotive [Member]
Segment Reporting Information [Line Items]
Net sales and revenue	32,288	30,475	98,312	99,126
Earnings (loss) before interest and taxes-adjusted	2,870	2,380	8,012	9,324
Adjustments	(440)	0	(1,578)	(654)
Equity in net assets of nonconsolidated affiliates	7,847	7,701	7,847	7,701
Goodwill and intangible assets, net	3,615	3,863	3,615	3,863
Total assets	118,896	123,832	118,896	123,832
Depreciation and amortization	1,399	1,387	3,936	4,055
Impairment charges	8	17	522	271
Equity income	486	459	1,674	1,456
Operating Segments [Member] | GMNA [Member] | Automotive [Member]
Segment Reporting Information [Line Items]
Net sales and revenue	27,650	24,819	83,969	82,594
Earnings (loss) before interest and taxes-adjusted	2,825	2,068	7,728	9,014
Adjustments	0	0	0	0
Equity in net assets of nonconsolidated affiliates	77	82	77	82
Goodwill and intangible assets, net	2,674	2,871	2,674	2,871
Total assets	110,245	109,934	110,245	109,934
Depreciation and amortization	1,251	1,210	3,474	3,499
Impairment charges	0	10	53	59
Equity income	2	2	7	8
Operating Segments [Member] | GMI [Member] | Automotive [Member]
Segment Reporting Information [Line Items]
Net sales and revenue	4,582	5,576	14,188	16,226
Earnings (loss) before interest and taxes-adjusted	139	389	471	884
Adjustments	0	0	(1,138)	(540)
Equity in net assets of nonconsolidated affiliates	7,770	7,619	7,770	7,619
Goodwill and intangible assets, net	939	980	939	980
Total assets	25,780	27,832	25,780	27,832
Depreciation and amortization	136	166	426	535
Impairment charges	2	7	463	207
Equity income	484	457	1,667	1,448
Operating Segments [Member] | GM Cruise [Member]
Segment Reporting Information [Line Items]
Net sales and revenue	0	0	0	0
Earnings (loss) before interest and taxes-adjusted	(214)	(165)	(534)	(455)
Adjustments	0	0	0	0
Equity in net assets of nonconsolidated affiliates	0	0	0	0
Goodwill and intangible assets, net	679	620	679	620
Total assets	2,567	564	2,567	564
Depreciation and amortization	2	0	5	1
Impairment charges	0	0	0	0
Equity income	0	0	0	0
Operating Segments [Member] | GM Financial [Member]
Segment Reporting Information [Line Items]
Net sales and revenue	3,518	3,161	10,417	8,899
Earnings (loss) before interest and taxes-adjusted	498	310	1,477	895
Adjustments	0	0	0	0
Equity in net assets of nonconsolidated affiliates	1,308	1,119	1,308	1,119
Goodwill and intangible assets, net	1,357	1,371	1,357	1,371
Total assets	105,658	106,142	105,658	106,142
Depreciation and amortization	1,904	1,743	5,560	4,757
Impairment charges	0	0	0	0
Equity income	44	41	141	129
Corporate [Member] | Automotive [Member]
Segment Reporting Information [Line Items]
Net sales and revenue	56	80	155	306
Earnings (loss) before interest and taxes-adjusted	(94)	(77)	(187)	(574)
Adjustments	(440)	0	(440)	(114)
Equity in net assets of nonconsolidated affiliates	0	0	0	0
Goodwill and intangible assets, net	2	12	2	12
Total assets	28,194	25,797	28,194	25,797
Depreciation and amortization	12	11	36	22
Impairment charges	6	0	6	5
Equity income	0	0	0	0
Corporate [Member] | Automotive [Member] | Ignition Switch Recall Litigations [Member]
Segment Reporting Information [Line Items]
Charges for legal related matters			440	114
Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales and revenue	(15)	(13)	(79)	(152)
Earnings (loss) before interest and taxes-adjusted	(1)	(2)	0	(5)
Adjustments	0	0	0	0
Equity in net assets of nonconsolidated affiliates	0	0	0	0
Goodwill and intangible assets, net	0	0	0	0
Total assets	(1,410)	(1,036)	(1,410)	(1,036)
Depreciation and amortization	0	0	0	0
Impairment charges	0	0	0	0
Equity income	0	0	0	0
Eliminations [Member] | Automotive [Member]
Segment Reporting Information [Line Items]
Equity in net assets of nonconsolidated affiliates	0	0	0	0
Goodwill and intangible assets, net	0	0	0	0
Total assets	(45,323)	(39,731)	(45,323)	(39,731)
Depreciation and amortization	0	0	0	(1)
Impairment charges	0	0	0	0
Equity income	$ 0	$ 0	$ 0	$ 0

Subsequent Event (Details)

Subsequent Event (Details) - Subsequent Event [Member] - Honda Motor Co., Ltd [Member] - GM Cruise Holdings LLC [Member] - Common Class E [Member] $ in Millions	Oct. 03, 2018USD ($)
Subsequent Event [Line Items]
Proceeds from issuance of common stock	$ 750
Ownership interest	5.70%
Agreed upon future contributions	$ 2,000

Subsequent Event Voluntary Sepa

Subsequent Event Voluntary Separation Program (Details) - Subsequent Event [Member] $ in Millions	Oct. 31, 2018USD ($)employee
Subsequent Event [Line Items]
Approximate Number of Eligible Employees	18,000
The Expected Charge for Every 1800 Employees | $	$ 130
Number of Voluntarily Separated Employees for which a Charge of $130 million is Expected	1,800
Approximate Percentage of Voluntary Separated Employees for which a Charge of $130 Million is Expected	10.00%