PRINCIPAL TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Principal transactions revenue
Principal transactions revenue	$ 2,874	$ 2,528	$ 6,148	$ 6,467
Interest rate risks
Principal transactions revenue
Principal transactions revenue	517	572	1,453	1,969
Foreign exchange risks
Principal transactions revenue
Principal transactions revenue	1,187	1,353	2,440	2,831
Equity risks
Principal transactions revenue
Principal transactions revenue	686	206	1,300	839
Equity risks | Visa
Principal transactions revenue
Principal transactions revenue	400		400
Commodity and other risks
Principal transactions revenue
Principal transactions revenue	321	469	624	967
Credit products and risks
Principal transactions revenue
Principal transactions revenue	$ 163	$ (72)	$ 331	$ (139)