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Fair Value Measurement - Nonrecurring Fair Value Measurements Included in Earnings (Details) - Nonrecurring - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	$ (367)	$ (246)
Loans held for sale	0	(10)
Other assets	(132)	(83)
Total	$ (499)	$ (339)

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