Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 12,898	$ 13,151	$ 44,466	$ 40,245
Other comprehensive income/(loss), after–tax
Unrealized gains/(losses) on investment securities	2,297	(1,950)	2,546	1,019
Translation adjustments, net of hedges	389	(340)	29	(73)
Fair value hedges	(20)	(5)	(33)	(15)
Cash flow hedges	2,265	(583)	1,354	(282)
Defined benefit pension and OPEB plans	(28)	(21)	(5)	(82)
DVA on fair value option elected liabilities	(349)	85	(232)	(330)
Total other comprehensive income/(loss), after–tax	4,554	(2,814)	3,659	237
Comprehensive income	$ 17,452	$ 10,337	$ 48,125	$ 40,482