Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 8,282	$ 14,300
Other comprehensive income/(loss), after–tax
Unrealized gains/(losses) on investment securities	(7,453)	(4,339)
Translation adjustments, net of hedges	(62)	(250)
Fair value hedges	110	(28)
Cash flow hedges	(2,791)	(2,249)
Defined benefit pension and OPEB plans	67	68
DVA on fair value option elected liabilities	646	(147)
Total other comprehensive income/(loss), after–tax	(9,483)	(6,945)
Comprehensive income	$ (1,201)	$ 7,355