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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 |  |  |  |

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