INVESTMENTS (Details 2) (USD $) In Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2010
Mortgage-backed securities
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	$ 5,970	$ 8,619
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	41	227
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	183	1,732
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	29	225
Total fair value of available for sale securities that have been in an unrealized loss position	6,153	10,351
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	70	452
U.S. government-sponsored agency guaranteed
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	3,949	8,321
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	30	214
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	28	38
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	16	21
Total fair value of available for sale securities that have been in an unrealized loss position	3,977	8,359
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	46	235
Prime
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	30	89
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months		3
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	40	1,506
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	5	174
Total fair value of available for sale securities that have been in an unrealized loss position	70	1,595
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	5	177
Alt-A
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months		10
Total fair value of available for sale securities that have been in an unrealized loss position		10
Subprime
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months		118
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months		1
Total fair value of available for sale securities that have been in an unrealized loss position		118
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position		1
Non-U.S. residential
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	1,931
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	10
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	82	135
Total fair value of available for sale securities that have been in an unrealized loss position	2,013	135
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	10
Commercial.
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	60	81
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	1	9
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	33	53
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	8	30
Total fair value of available for sale securities that have been in an unrealized loss position	93	134
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	9	39
U.S. Treasury and federal agency securities
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	7,813	18,909
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	27	76
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer		725
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer		35
Total fair value of available for sale securities that have been in an unrealized loss position	7,813	19,634
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	27	111
U.S. Treasury
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	2,066	9,229
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	12	21
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer		725
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer		35
Total fair value of available for sale securities that have been in an unrealized loss position	2,066	9,954
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	12	56
Agency obligations
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	5,747	9,680
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	15	55
Total fair value of available for sale securities that have been in an unrealized loss position	5,747	9,680
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	15	55
State and municipal securities
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	1	626
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months		60
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	11,826	11,322
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	2,574	2,440
Total fair value of available for sale securities that have been in an unrealized loss position	11,827	11,948
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	2,574	2,500
Foreign government
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	31,146	32,731
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	195	271
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	8,986	6,609
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	199	144
Total fair value of available for sale securities that have been in an unrealized loss position	40,132	39,340
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	394	415
Corporate
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	3,149	1,128
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	28	30
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	215	860
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	24	29
Total fair value of available for sale securities that have been in an unrealized loss position	3,364	1,988
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	52	59
Asset-based financing
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	3,493	2,533
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	50	64
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	210	14
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	10	4
Total fair value of available for sale securities that have been in an unrealized loss position	3,703	2,547
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	60	68
Other debt securities
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	184
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	6
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer		559
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer		60
Total fair value of available for sale securities that have been in an unrealized loss position	184	559
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	6	60
Marketable equity securities AFS
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	119	68
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	25	3
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	1,512	2,039
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	203	208
Total fair value of available for sale securities that have been in an unrealized loss position	1,631	2,107
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	228	211
Total securities AFS
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	51,875	64,614
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	372	731
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	22,932	23,860
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	3,039	3,145
Total fair value of available for sale securities that have been in an unrealized loss position	74,807	88,474
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	$ 3,411	$ 3,876