Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 8,161	$ 7,067
Other comprehensive income (loss), net-of-tax:
Net change in debt securities	555	(3,447)
Net change in debit valuation adjustments	10	261
Net change in derivatives	2,042	(5,179)
Employee benefit plan adjustments	10	24
Net change in foreign currency translation adjustments	12	28
Other comprehensive income (loss)	2,629	(8,313)
Comprehensive income (loss)	$ 10,790	$ (1,246)