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Fair Value Measurement - Nonrecurring Fair Value Measurements Included in Earnings (Details) - Nonrecurring - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for investment | $ (127) | $ (105)
Loans held for sale | (10) | 0
Other assets | (63) | (37)
Total | $ (200) | $ (142)

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