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Derivative Financial Instruments - Derivative Financial Instruments (Details) - USD ($) shares in Millions, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative [Line Items] |  |  |  |
DerivativeAssetStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag |  | Fair Value of Assets | Fair Value of Assets |
DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag |  | Fair Value of Liabilities | Fair Value of Liabilities |
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 (in shares) | 69.1 |  |  |
Automotive | Stellantis warrants, formerly known as PSA warrants | Stellantis N.V. |  |  |  |
Derivative [Line Items] |  |  |  |
Outstanding warrants (in shares) | 39.7 |  |  |
Automotive | Not Designated as Hedges |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | $ 5,148 | $ 5,822 |
Automotive | Not Designated as Hedges | PSA Group | Interest Income and Other Non-Operating Income, Net |  |  |  |
Derivative [Line Items] |  |  |  |
(Loss) gain on derivative instruments |  | (363) | 316 | $ 139
Automotive | Not Designated as Hedges | Foreign currency | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | 4,072 | 4,228 |
Automotive | Not Designated as Hedges | Commodity | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | 1,075 | 1,549 |
Automotive | Not Designated as Hedges | Stellantis warrants, formerly known as PSA warrants | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | 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] |  |  |  |
Derivative notional amount |  | 142,212 | 133,971 |
Fair Value of Assets |  | 2,302 | 1,017 |
Fair Value of Liabilities |  | 3,392 | 691 |
Collateral |  | 553 | 376 |
Collateral available for netting |  | 1,500 |  |
GM Financial | Cash Flow Hedges | Foreign currency |  |  |  |
Derivative [Line Items] |  |  |  |
Loss recognized in AOCI |  | 529 |  |
AOCI reclassification |  | 578 |  |
GM Financial | Not Designated as Hedges | Foreign currency | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | 0 | 148 |
Fair Value of Assets |  | 0 | 0 |
Fair Value of Liabilities |  | 0 | 0 |
GM Financial | Not Designated as Hedges | Interest rate contracts | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | 113,975 | 110,053 |
Fair Value of Assets |  | 2,268 | 846 |
Fair Value of Liabilities |  | 1,984 | 339 |
GM Financial | Designated as Hedges | Fair Value Hedges | Interest rate swaps | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | 19,950 | 15,058 |
Fair Value of Assets |  | 0 | 74 |
Fair Value of Liabilities |  | 821 | 88 |
GM Financial | Designated as Hedges | Fair Value Hedges | Foreign currency swaps | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | 0 | 682 |
Fair Value of Assets |  | 0 | 0 |
Fair Value of Liabilities |  | 0 | 59 |
GM Financial | Designated as Hedges | Cash Flow Hedges | Interest rate swaps | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | 1,434 | 611 |
Fair Value of Assets |  | 34 | 12 |
Fair Value of Liabilities |  | 1 | 4 |
GM Financial | Designated as Hedges | Cash Flow Hedges | Foreign currency swaps | Fair Value Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative notional amount |  | 6,852 | 7,419 |
Fair Value of Assets |  | 0 | 85 |
Fair Value of Liabilities |  | $ 586 | $ 201 |

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