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Derivative Financial Instruments (Tables) | 9 Months Ended
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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 |
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(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 |
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(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 |
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(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.

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- Definition Tabular disclosure for fair value hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the notional amounts of outstanding derivative positions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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