PRINCIPAL TRANSACTIONS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Principal transactions revenue
Principal transactions revenue	$ 11,653	$ 10,948	$ 14,159
Interest rate risks
Principal transactions revenue
Principal transactions revenue	1,966	2,407	3,389
Foreign exchange risks
Principal transactions revenue
Principal transactions revenue	5,615	5,978	7,148
Equity risks
Principal transactions revenue
Principal transactions revenue	2,448	1,266	1,848
Equity risks | Visa
Principal transactions revenue
Principal transactions revenue	400
Commodity and other risks
Principal transactions revenue
Principal transactions revenue	1,374	1,741	1,801
Credit products and risks
Principal transactions revenue
Principal transactions revenue	$ 250	$ (444)	$ (27)