CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 378	$ 88	$ 827	$ 482
Net change in unrealized gains (losses), net of tax:
Investment securities	147	550	356	360
Fair value option liabilities attributable to our own credit spread	(23)	4	(27)	(37)
Derivatives designated as cash flow hedges	(8)	(107)	(124)	(43)
Pension and post-retirement benefit plans	(1)	(1)	(1)	(1)
Total other comprehensive income	115	446	204	279
Comprehensive income	$ 493	$ 534	$ 1,031	$ 761