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Held-for-sale Operations - Assets and Liabilities of Operations Held-for-Sale (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets |  |
Total assets | $ 0 | $ 1,975
Liabilities |  |
Total liabilities | $ 0 | 17
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Ally Lending |  |
Assets |  |
Loans held-for-sale, net |  | 1,940
Other assets |  | 35
Total assets |  | 1,975
Liabilities |  |
Accrued expenses and other liabilities |  | 17
Total liabilities |  | 17
Accrued interest and fees |  | 25
Goodwill |  | 4
Property, plant and equipment |  | 4
Unfunded lending commitments |  | $ 5

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