FEDERAL FUNDS, SECURITIES BORROWED, LOANED, AND SUBJECT TO REPURCHASE AGREEMENTS (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Abstract]
Securities purchased under agreements to resell	$ 132,083	$ 123,979
Deposits paid for securities borrowed	104,971	118,591
Total	237,054	242,570
Federal funds purchased	776	334
Securities sold under agreements to repurchase	154,546	147,204
Deposits received for securities loaned	21,690	25,900
Total	$ 177,012	$ 173,438