FEDERAL FUNDS, SECURITIES BORROWED, LOANED, AND SUBJECT TO REPURCHASE AGREEMENTS (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Abstract]
Federal funds sold	$ 0		$ 20
Securities purchased under agreements to resell	125,302	[1]	136,649	[1]
Deposits paid for securities borrowed	120,160	[1]	120,368	[1]
Total	245,462		257,037
Federal funds purchased	491		910
Securities sold under agreements to repurchase	148,870	[1]	175,691	[1]
Deposits received for securities loaned	26,371	[1]	26,911	[1]
Total	$ 175,732		$ 203,512

[1] The total of this column for each period excludes Federal funds sold/purchased. See table on prior page.