Noninterest Revenue and Noninterest Expense - Asset Management Fees (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Noninterest Income (Expense) [Abstract]
Investment management fees	$ 5,015	$ 4,381	$ 14,326	$ 12,650
All other asset management fees	105	98	300	277
Total asset management fees	$ 5,120	$ 4,479	$ 14,626	$ 12,927