DERIVATIVES ACTIVITIES (Details 3) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative gain (loss)
Gains (losses) recognized in Other revenue related to derivatives not designated in a qualifying hedging relationship	$ 676,000,000	$ 305,000,000	$ (647,000,000)	$ (957,000,000)
Gain (loss) on fair value hedges
Gain (loss) on the derivatives in designated and qualifying fair value hedges	246,000,000	493,000,000	(2,498,000,000)	1,350,000,000
Gain (loss) on the hedged item in designated and qualifying fair value hedges	(245,000,000)	(590,000,000)	2,525,000,000	(1,495,000,000)
Hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges	(44,000,000)	(132,000,000)	(73,000,000)	(203,000,000)
Net gain (loss) excluded from assessment of the effectiveness of fair value hedges	45,000,000	35,000,000	100,000,000	58,000,000
Pretax change in accumulated other comprehensive income (loss)
Cash flow hedges expected to be reclassified within 12 months			700,000,000
Maximum length of time hedged in cash flow hedge			10 years
Payments to protection buyer			0
Interest rate contracts
Derivative gain (loss)
Gains (losses) recognized in Other revenue related to derivatives not designated in a qualifying hedging relationship	5,000,000	(122,000,000)	(245,000,000)	(292,000,000)
Gain (loss) on fair value hedges
Gain (loss) on the derivatives in designated and qualifying fair value hedges	(97,000,000)	297,000,000	(2,588,000,000)	750,000,000
Gain (loss) on the hedged item in designated and qualifying fair value hedges	51,000,000	(418,000,000)	2,519,000,000	(953,000,000)
Hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges	(46,000,000)	(121,000,000)	(69,000,000)	(203,000,000)
Foreign exchange contracts
Derivative gain (loss)
Gains (losses) recognized in Other revenue related to derivatives not designated in a qualifying hedging relationship	867,000,000	825,000,000	(35,000,000)	59,000,000
Gain (loss) on fair value hedges
Gain (loss) on the derivatives in designated and qualifying fair value hedges	343,000,000	196,000,000	90,000,000	600,000,000
Gain (loss) on the hedged item in designated and qualifying fair value hedges	(296,000,000)	(172,000,000)	6,000,000	(542,000,000)
Hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges	2,000,000	(11,000,000)	(4,000,000)
Net gain (loss) excluded from assessment of the effectiveness of fair value hedges	45,000,000	35,000,000	100,000,000	58,000,000
Credit derivatives
Derivative gain (loss)
Gains (losses) recognized in Other revenue related to derivatives not designated in a qualifying hedging relationship	(196,000,000)	(398,000,000)	(367,000,000)	(724,000,000)
Cash Flow Hedges
Pretax change in accumulated other comprehensive income (loss)
Effective portion of cash flow hedges included in AOCI	265,000,000	52,000,000	799,000,000	(275,000,000)
Effective portion of cash flow hedges reclassified from AOCI to earnings	(249,000,000)	(242,000,000)	(720,000,000)	(787,000,000)
Cash Flow Hedges | Interest rate contracts
Pretax change in accumulated other comprehensive income (loss)
Effective portion of cash flow hedges included in AOCI	230,000,000	(60,000,000)	748,000,000	(327,000,000)
Effective portion of cash flow hedges reclassified from AOCI to earnings	(211,000,000)	(186,000,000)	(596,000,000)	(647,000,000)
Cash Flow Hedges | Foreign exchange contracts
Pretax change in accumulated other comprehensive income (loss)
Effective portion of cash flow hedges included in AOCI	34,000,000	112,000,000	37,000,000	52,000,000
Effective portion of cash flow hedges reclassified from AOCI to earnings	(38,000,000)	(56,000,000)	(124,000,000)	(140,000,000)
Cash Flow Hedges | Credit derivatives
Pretax change in accumulated other comprehensive income (loss)
Effective portion of cash flow hedges included in AOCI	1,000,000		14,000,000
Net Investment Hedges
Pretax change in accumulated other comprehensive income (loss)
Effective portion of cash flow hedges included in AOCI	(534,000,000)	(1,580,000,000)	1,527,000,000	(2,636,000,000)
Ineffectiveness recorded in earnings			$ 0