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Fair Value Measures - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Loans held for sale | $ 1,595 | $ 902
Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Certain impaired loans | 2,399 | 197
Loans held for sale | 255 |
Other assets | 51 | 50
Total assets at fair value | 2,705 | 247
Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Certain impaired loans | 0 | 0
Loans held for sale | 0 |
Other assets | 0 | 0
Total assets at fair value | 0 | 0
Nonrecurring | Significant Other Observable Inputs (Level 2) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Certain impaired loans | 0 | 0
Loans held for sale | 255 |
Other assets | 0 | 0
Total assets at fair value | 255 | 0
Nonrecurring | Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Certain impaired loans | 2,399 | 197
Loans held for sale | 0 |
Other assets | 51 | 50
Total assets at fair value | $ 2,450 | $ 247

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