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Securitizations and Variable Interest Entities (Schedule of Variable Interest Entities) (Details) - USD ($) $ in Millions | 1 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023
Variable Interest Entity [Line Items] |  |  |
Carrying value of total assets | $ 192,877 | $ 196,392 | $ 196,165
Carrying value of total liabilities | 179,220 | 182,626 |
Assets sold to nonconsolidated VIEs | 3,620 | 2,639 |
Maximum exposure to loss in nonconsolidated VIEs | 6,819 | 5,458 |
Non-recourse debt | 17,011 | 17,570 |
Variable interest entity, deconsolidation of assets | 1,100 |  |
Proceeds from sale of variable interest entity | 1,100 |  |
Held-to-maturity securities | 4,655 | 4,680 |
Other assets | 9,348 | 9,395 |
Equity securities | 788 | 810 |
On-balance sheet variable interest entities |  |  |
Variable Interest Entity [Line Items] |  |  |
Carrying value of total assets | 6,189 | 7,075 |
Carrying value of total liabilities | 1,318 | 1,513 |
Non-recourse debt | 1,313 | 1,509 |
Other assets | 445 | 461 |
On-balance sheet variable interest entities | Consumer | Automotive |  |  |
Variable Interest Entity [Line Items] |  |  |
Carrying value of total assets | 15,132 | 16,415 |
Carrying value of total liabilities | 1,418 | 1,614 |
Assets sold to nonconsolidated VIEs | 0 | 0 |
Maximum exposure to loss in nonconsolidated VIEs | 0 | 0 |
Assets held-in-trust | 8,900 | 9,300 |
On-balance sheet variable interest entities | Consumer | Automotive | Nonrecourse |  |  |
Variable Interest Entity [Line Items] |  |  |
Non-recourse debt | 100 | 100 |
Off-balance sheet variable interest entities |  |  |
Variable Interest Entity [Line Items] |  |  |
Carrying value of total assets | 17,775 | 19,012 |
Carrying value of total liabilities | 2,336 | 2,588 |
Off-balance sheet variable interest entities | Consumer | Automotive |  |  |
Variable Interest Entity [Line Items] |  |  |
Carrying value of total assets | 133 | 81 |
Carrying value of total liabilities | 0 | 0 |
Assets sold to nonconsolidated VIEs | 3,509 | 2,514 |
Maximum exposure to loss in nonconsolidated VIEs | 3,642 | 2,595 |
Held-to-maturity securities | 127 | 78 |
Other assets | 6 | 3 |
Off-balance sheet variable interest entities | Consumer | Other |  |  |
Variable Interest Entity [Line Items] |  |  |
Carrying value of total assets | 0 | 0 |
Carrying value of total liabilities | 0 | 0 |
Assets sold to nonconsolidated VIEs | 111 | 125 |
Maximum exposure to loss in nonconsolidated VIEs | 111 | 125 |
Off-balance sheet variable interest entities | Commercial | Other |  |  |
Variable Interest Entity [Line Items] |  |  |
Carrying value of total assets | 2,510 | 2,516 |
Carrying value of total liabilities | 918 | 974 |
Assets sold to nonconsolidated VIEs | 0 | 0 |
Maximum exposure to loss in nonconsolidated VIEs | 3,066 | 2,738 |
Equity securities | $ 46 | $ 44 |

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