Segment, Geographic and Revenue Information - Trading Revenues by Product Type (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue
Trading revenues	$ 4,002	$ 3,679	$ 12,985	$ 11,958
Interest rate
Disaggregation of Revenue
Trading revenues	1,450	1,124	4,771	3,701
Foreign exchange
Disaggregation of Revenue
Trading revenues	352	284	893	672
Equity
Disaggregation of Revenue
Trading revenues	2,100	2,167	6,726	6,782
Commodity and other
Disaggregation of Revenue
Trading revenues	451	447	1,528	1,321
Credit
Disaggregation of Revenue
Trading revenues	$ (351)	$ (343)	$ (933)	$ (518)