COMMISSIONS AND FEES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Commissions and fees
Total commissions and fees	$ 3,344	$ 3,032	$ 6,823	$ 6,119
Transaction Services
Commissions and fees
Total commissions and fees	536	514	920	887
Credit cards and bank cards
Commissions and fees
Total commissions and fees	632	693	1,256	1,346
Investment banking
Commissions and fees
Total commissions and fees	841	652	1,768	1,306
Trading-related
Commissions and fees
Total commissions and fees	664	552	1,359	1,160
Other Consumer
Commissions and fees
Total commissions and fees	230	215	458	439
Checking-related
Commissions and fees
Total commissions and fees	72	76	278	314
Loan servicing
Commissions and fees
Total commissions and fees	115	61	252	101
Corporate finance
Commissions and fees
Total commissions and fees	132	109	291	243
Other
Commissions and fees
Total commissions and fees	$ 122	$ 160	$ 241	$ 323