PRINCIPAL TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Principal transactions revenue
Principal transactions revenue	$ 3,219	$ 3,008	$ 9,367	$ 9,475
Interest rate risks
Principal transactions revenue
Principal transactions revenue	659	782	1,744	2,447
Foreign exchange risks
Principal transactions revenue
Principal transactions revenue	1,505	1,464	4,313	4,598
Equity risks
Principal transactions revenue
Principal transactions revenue	663	308	1,964	1,147
Equity risks | Visa
Principal transactions revenue
Principal transactions revenue			400
Commodity and other risks
Principal transactions revenue
Principal transactions revenue	383	475	1,007	1,443
Credit products and risks
Principal transactions revenue
Principal transactions revenue	$ 9	$ (21)	$ 339	$ (160)