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Derivative Financial Instruments - Notional Amounts for Derivative Financial Instruments (Details) - GM Financial - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Derivative [Line Items] |  |
Notional | $ 157,689 | $ 163,446
Fair Value of Assets | 1,691 | 1,809
Fair Value of Liabilities | 2,815 | 2,563
Collateral | 447 | 457
Collateral available for netting | 1,200 | 1,200
Cash Flow Hedges | Foreign currency swaps |  |
Derivative [Line Items] |  |
Loss recognized in AOCI | 141 |
Loss on AOCI reclassification | 163 |
Not Designated as Hedges | Foreign currency | Fair Value Level 2 |  |
Derivative [Line Items] |  |
Notional | 940 | 0
Fair Value of Assets | 2 | 0
Fair Value of Liabilities | 0 | 0
Not Designated as Hedges | Interest rate contracts | Fair Value Level 2 |  |
Derivative [Line Items] |  |
Notional | 123,103 | 134,683
Fair Value of Assets | 1,576 | 1,573
Fair Value of Liabilities | 2,024 | 1,997
Designated as Hedges | Fair Value Hedges | Interest rate swaps | Fair Value Level 2 |  |
Derivative [Line Items] |  |
Notional | 21,991 | 18,379
Fair Value of Assets | 9 | 75
Fair Value of Liabilities | 352 | 238
Designated as Hedges | Cash Flow Hedges | Interest rate swaps | Fair Value Level 2 |  |
Derivative [Line Items] |  |
Notional | 2,447 | 2,381
Fair Value of Assets | 16 | 17
Fair Value of Liabilities | 10 | 16
Designated as Hedges | Cash Flow Hedges | Foreign currency swaps | Fair Value Level 2 |  |
Derivative [Line Items] |  |
Notional | 9,208 | 8,003
Fair Value of Assets | 88 | 144
Fair Value of Liabilities | $ 428 | $ 311

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