INVESTMENTS (Details 4) (USD $)			6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Held-to-maturity	Jun. 30, 2013 Mortgage-backed securities	Dec. 31, 2012 Mortgage-backed securities	Jun. 30, 2013 Prime	Dec. 31, 2012 Prime	Jun. 30, 2013 Alt-A	Dec. 31, 2012 Alt-A	Jun. 30, 2013 Subprime	Dec. 31, 2012 Subprime	Jun. 30, 2013 Non-U.S. residential	Dec. 31, 2012 Non-U.S. residential	Jun. 30, 2013 Commercial	Dec. 31, 2012 Commercial	Jun. 30, 2013 State and municipal securities	Dec. 31, 2012 State and municipal securities	Jun. 30, 2013 Foreign government	Dec. 31, 2012 Foreign government	Jun. 30, 2013 Corporate	Dec. 31, 2012 Corporate	Jun. 30, 2013 Asset-backed securities	Dec. 31, 2012 Asset-backed securities
Debt Securities Held-to-maturity
Amortized cost	$ 10,637,000,000	$ 11,662,000,000		$ 3,711,000,000	$ 6,039,000,000	$ 130,000,000	$ 258,000,000	$ 1,876,000,000	$ 2,969,000,000	$ 17,000,000	$ 201,000,000	$ 1,661,000,000	$ 2,488,000,000	$ 27,000,000	$ 123,000,000	$ 1,308,000,000	$ 1,278,000,000	$ 4,123,000,000	$ 2,987,000,000	$ 825,000,000	$ 829,000,000	$ 670,000,000	$ 529,000,000
Net unrealized losses recognized in AOCI	1,035,000,000	1,532,000,000		836,000,000	1,330,000,000	24,000,000	49,000,000	547,000,000	837,000,000		43,000,000	265,000,000	401,000,000			70,000,000	73,000,000			91,000,000	103,000,000	38,000,000	26,000,000
Carrying value	9,602,000,000	10,130,000,000		2,875,000,000	4,709,000,000	106,000,000	209,000,000	1,329,000,000	2,132,000,000	17,000,000	158,000,000	1,396,000,000	2,087,000,000	27,000,000	123,000,000	1,238,000,000	1,205,000,000	4,123,000,000	2,987,000,000	734,000,000	726,000,000	632,000,000	503,000,000
Gross unrecognized gains	862,000,000	917,000,000		624,000,000	747,000,000	17,000,000	30,000,000	558,000,000	653,000,000	2,000,000	13,000,000	47,000,000	50,000,000		1,000,000	63,000,000	89,000,000	38,000,000		94,000,000	73,000,000	43,000,000	8,000,000
Gross unrecognized losses	387,000,000	403,000,000		298,000,000	358,000,000	4,000,000	4,000,000	250,000,000	250,000,000	5,000,000	21,000,000	39,000,000	81,000,000		2,000,000	62,000,000	37,000,000	17,000,000				10,000,000	8,000,000
Fair value	10,077,000,000	10,644,000,000		3,201,000,000	5,098,000,000	119,000,000	235,000,000	1,637,000,000	2,535,000,000	14,000,000	150,000,000	1,404,000,000	2,056,000,000	27,000,000	122,000,000	1,239,000,000	1,257,000,000	4,144,000,000	2,987,000,000	828,000,000	799,000,000	665,000,000	503,000,000
Unrealized loss, other than temporary impairment, not credit loss, recorded in AOCI	1,000,000,000	1,500,000,000
Gross unrealized losses included in other-than-temporary-impairment losses on investments			$ 0