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Stockholders' Equity - Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Before Tax
Net unrealized gains (losses) on securities available for sale	$ 3,376	$ (1,036)	$ 1,183
Net unrealized gains (losses) on hedging relationships	1,561	(303)	906
Foreign currency translation adjustments	7	32	6
Other	37	9	8
Other comprehensive income (loss)	4,981	(1,298)	2,103
Provision (Benefit)
Net unrealized gains (losses) on securities available for sale	843	(261)	276
Net unrealized gains (losses) on hedging relationships	382	(76)	217
Foreign currency translation adjustments	(71)	55	(40)
Other	9	2	2
Other comprehensive income (loss)	1,163	(280)	455
After Tax
Net unrealized gains (losses) on securities available for sale	2,533	(775)	907
Net unrealized gains (losses) on hedging relationships	1,179	(227)	689
Foreign currency translation adjustments	78	(23)	46
Other	28	7	6
Other comprehensive income (loss), net of tax	$ 3,818	$ (1,018)	$ 1,648

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