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Derivative Financial Instruments - Notional Amounts for Derivative Financial Instruments (Details) - USD ($) shares in Millions, $ in Millions | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Automotive | Stellantis N.V. |  |  |  |
Derivative [Line Items] |  |  |  |
Proceeds from exercise of warrants | $ 1,100 |  |  |
Automotive | Stellantis N.V. | Common Stock |  |  |  |
Derivative [Line Items] |  |  |  |
Number of shares called by warrants | 69.1 | 69.1 |  |
Automotive | Stellantis warrants, formerly known as PSA warrants | Stellantis N.V. |  |  |  |
Derivative [Line Items] |  |  |  |
Warrants outstanding (in shares) | 39.7 | 39.7 |  |
Automotive | Not Designated as Hedges |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | $ 5,676 | $ 5,676 |  | $ 5,822
Automotive | Not Designated as Hedges | PSA Group | Interest Income and Other Non-Operating Income, Net |  |  |  |
Derivative [Line Items] |  |  |  |
(Losses) gains on derivative instruments |  | (363) | $ 333 |
Automotive | Not Designated as Hedges | Foreign currency | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 4,484 | 4,484 |  | 4,228
Automotive | Not Designated as Hedges | Commodity | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 1,192 | 1,192 |  | 1,549
Automotive | Not Designated as Hedges | Stellantis warrants, formerly known as PSA warrants | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 0 | 0 |  | 45
Automotive | Not Designated as Hedges | Fair Value Hedges | Stellantis warrants, formerly known as PSA warrants | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Fair Value of Assets |  |  |  | 1,400
GM Financial |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 135,369 | 135,369 |  | 133,971
Fair Value of Assets | 2,280 | 2,280 |  | 1,017
Fair Value of Liabilities | 3,867 | 3,867 |  | 691
Collateral | 471 | 471 |  | 376
Collateral available for netting | 1,400 | 1,400 |  |
GM Financial | Designated as Hedges | Fair Value Hedges | Interest rate swaps | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 20,950 | 20,950 |  | 15,058
Fair Value of Assets | 0 | 0 |  | 74
Fair Value of Liabilities | 864 | 864 |  | 88
GM Financial | Designated as Hedges | Fair Value Hedges | Foreign currency swaps | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 0 | 0 |  | 682
Fair Value of Assets | 0 | 0 |  | 0
Fair Value of Liabilities | 0 | 0 |  | 59
GM Financial | Designated as Hedges | Cash Flow Hedges | Interest rate swaps | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 1,117 | 1,117 |  | 611
Fair Value of Assets | 26 | 26 |  | 12
Fair Value of Liabilities | 3 | 3 |  | 4
GM Financial | Designated as Hedges | Cash Flow Hedges | Foreign currency swaps | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 6,329 | 6,329 |  | 7,419
Fair Value of Assets | 4 | 4 |  | 85
Fair Value of Liabilities | 1,036 | 1,036 |  | 201
GM Financial | Not Designated as Hedges | Foreign currency | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 0 | 0 |  | 148
Fair Value of Assets | 0 | 0 |  | 0
Fair Value of Liabilities | 0 | 0 |  | 0
GM Financial | Not Designated as Hedges | Interest rate contracts | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 106,973 | 106,973 |  | 110,053
Fair Value of Assets | 2,250 | 2,250 |  | 846
Fair Value of Liabilities | $ 1,965 | $ 1,965 |  | $ 339

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