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Fair Value Measurement - Nonrecurring Fair Value Measurements Included in Earnings (Details) - Nonrecurring - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	$ (123)	$ (127)
Loans held for sale	6	(10)
Other assets	(67)	(63)
Total	$ (184)	$ (200)

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