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Fair Value Measurement - Nonrecurring Fair Value Measurements (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for sale | $ 394 | $ 347
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for investment | 0 | 0
Loans held for sale | 426 | 515
Other investments | 1,330 | 1,329
Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for investment | 306,948 | 308,044
Loans held for sale | 0 | 0
Other investments | 0 | 0
Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for investment | 514 | 545
Loans held for sale | 10 | 37
Other assets | 101 | 214
Total | 625 | 796
Nonrecurring | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for investment | 0 | 0
Loans held for sale | 10 | 37
Other assets | 0 | 0
Total | 10 | 37
Nonrecurring | Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for investment | 514 | 545
Loans held for sale | 0 | 0
Other assets | 101 | 214
Total | 615 | 759
Equity investments accounted for under measurement alternative | 47 | 46
Foreclosed property and repossessed assets, fair value disclosure | $ 54 | 45
Long lived assets held for sale |  | $ 123

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