FEDERAL FUNDS/SECURITIES BORROWED, LOANED, AND SUBJECT TO REPURCHASE AGREEMENTS (Details 2) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Securities purchased under agreements to resell
Gross Amounts of Recognized Assets	$ 205,688	$ 187,950
Gross Amounts Offset on the Consolidated Balance Sheet	58,456	49,401
Net Amounts of Assets included on the Consolidated Balance Sheet	147,232	138,549
Amounts Not Offset on the Consolidated Balance Sheet but Eligible for Offsetting Upon Counterparty Default	112,829	111,745
Net Amounts	34,403	26,804
Deposits paid for securities borrowed
Gross Amounts of Recognized Assets	126,357	122,665
Net Amounts of Assets included on the Consolidated Balance Sheet	126,357	122,665
Amounts Not Offset on the Consolidated Balance Sheet but Eligible for Offsetting Upon Counterparty Default	27,445	34,733
Net Amounts	98,912	87,932
Total
Total	332,045	310,615
Gross Amounts Offset on the Consolidated Balance Sheet	58,456	49,401
Net Amounts of Assets included on the Consolidated Balance Sheet	273,589	261,214
Amounts Not Offset on the Consolidated Balance Sheet but Eligible for Offsetting Upon Counterparty Default	140,274	146,478
Net Amounts	133,315	114,736
Securities sold under agreements to repurchase
Gross Amounts of Recognized Liabilities	247,419	231,731
Gross Amounts Offset on the Consolidated Balance Sheet	58,456	49,401
Net Amounts of Liabilities included on the Consolidated Balance Sheet	188,963	182,330
Amounts Not Offset on the Consolidated Balance Sheet but Eligible for Offsetting Upon Counterparty Default	87,378	104,681
Net Amounts	101,585	77,649
Deposits received for securities loaned
Gross Amounts of Recognized Liabilities	26,828	27,901
Net Amounts of Liabilities included on the Consolidated Balance Sheet	26,828	27,901
Amounts Not Offset on the Consolidated Balance Sheet but Eligible for Offsetting Upon Counterparty Default	7,250	15,579
Net Amounts	19,578	12,322
Total
Gross Amounts of Recognized Liabilities	274,247	259,632
Gross Amounts Offset on the Consolidated Balance Sheet	58,456	49,401
Net Amounts of Liabilities included on the Consolidated Balance Sheet	215,791	210,231
Amounts Not Offset on the Consolidated Balance Sheet but Eligible for Offsetting Upon Counterparty Default	94,628	120,260
Net Amounts	$ 121,163	$ 89,971