Segment, Geographic and Revenue Information - Trading Revenues by Product Type (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue
Trading revenues	$ 3,597	$ 3,330	$ 7,580	$ 7,555
Interest rate contracts
Disaggregation of Revenue
Trading revenues	469	17	860	876
Foreign exchange
Disaggregation of Revenue
Trading revenues	475	314	1,123	588
Equity
Disaggregation of Revenue
Trading revenues	1,990	2,033	3,997	3,728
Commodity and other
Disaggregation of Revenue
Trading revenues	484	680	1,009	1,541
Credit
Disaggregation of Revenue
Trading revenues	$ 179	$ 286	$ 591	$ 822