Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Other Comprehensive Income [Abstract]
Net income	$ 2,588	$ 2,741	$ 1,992
Other comprehensive income (loss), net of tax and reclassification adjustments:
Net unrealized gains (losses) on investment securities	34	142	(407)
Cash flow hedges adjustments	50	98	(315)
Defined benefit plans liability adjustments	213	87	65
Other	(2)	4	(6)
Total other comprehensive income (loss)	295	331	(663)
Total comprehensive income	$ 2,883	$ 3,072	$ 1,329