Noninterest Income - Client Investment Fees (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 1,503	$ 1,314	$ 1,057
Sweep money market fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	215	43	74
Asset management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	57	31	43
Repurchase agreement fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	114	1	15
Client investment fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 386	$ 75	$ 132