Noninterest Revenue and Noninterest Expense - Other income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2023
Noninterest Income (Expense) [Abstract]
Operating lease income	$ 689	$ 716	$ 1,361	$ 1,471
Losses on tax-oriented investments	(23)	(462)	(37)	(874)
Estimated bargain purchase gain associated with the First Republic acquisition	119		103
Estimated bargain purchase gain associated with the First Republic acquisition		2,712		2,712
Gain related to the acquisition of CIFM	0	0	0	339
Initial gain on the Visa share exchange	$ 7,990	$ 0	$ 7,990	$ 0
CIFM
Schedule of Noninterest revenue [Line Items]
Percentage interest acquired					51.00%