Noninterest Income - Summary of Other Noninterest Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Trading Activity, Gains and Losses, Net [Line Items]
Revenue from contracts with customers	$ 368	$ 306	$ 720	$ 633
Net losses on revaluation of foreign currency instruments, net of foreign exchange forward contracts	1	6	1	5
Gains on total return swaps	35	0	27	0
Other service revenue	17	15	33	31
Other	67	42	88	72
Fund management fees
Trading Activity, Gains and Losses, Net [Line Items]
Revenue from contracts with customers	$ 14	$ 21	$ 27	$ 36