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FAIR VALUE MEASUREMENTS (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended																3 Months Ended																																					3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Liabilities	Mar. 31, 2012 Liabilities	Mar. 31, 2013 Policyholder contract deposits	Mar. 31, 2012 Policyholder contract deposits	Mar. 31, 2013 Derivative liabilities, net	Mar. 31, 2012 Derivative liabilities, net	Mar. 31, 2013 Interest rate contracts	Mar. 31, 2012 Interest rate contracts	Mar. 31, 2012 Foreign exchange contracts	Mar. 31, 2013 Equity contracts	Mar. 31, 2012 Equity contracts	Mar. 31, 2013 Commodity contracts	Mar. 31, 2012 Commodity contracts	Dec. 31, 2011 Commodity contracts	Mar. 31, 2013 Credit contracts	Mar. 31, 2012 Credit contracts	Mar. 31, 2013 Other contracts	Mar. 31, 2012 Other contracts	Mar. 31, 2013 Long-term debt	Mar. 31, 2012 Long-term debt	Mar. 31, 2013 Bonds available for sale	Mar. 31, 2012 Bonds available for sale	Mar. 31, 2013 Bonds available for sale Obligations of states, municipalities and political subdivisions	Mar. 31, 2012 Bonds available for sale Obligations of states, municipalities and political subdivisions	Mar. 31, 2013 Bonds available for sale Non-U.S. government	Mar. 31, 2012 Bonds available for sale Non-U.S. government	Mar. 31, 2013 Bonds available for sale Corporate debt	Mar. 31, 2012 Bonds available for sale Corporate debt	Mar. 31, 2013 Bonds available for sale Residential mortgage backed securities (RMBS)	Mar. 31, 2012 Bonds available for sale Residential mortgage backed securities (RMBS)	Mar. 31, 2013 Bonds available for sale Commercial mortgage-backed securities (CMBS)	Mar. 31, 2012 Bonds available for sale Commercial mortgage-backed securities (CMBS)	Mar. 31, 2013 Bonds available for sale Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)	Mar. 31, 2012 Bonds available for sale Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)	Mar. 31, 2013 Bond trading securities	Mar. 31, 2012 Bond trading securities	Mar. 31, 2012 Bond trading securities Corporate debt	Mar. 31, 2013 Bond trading securities Residential mortgage backed securities (RMBS)	Mar. 31, 2012 Bond trading securities Residential mortgage backed securities (RMBS)	Mar. 31, 2013 Bond trading securities Commercial mortgage-backed securities (CMBS)	Mar. 31, 2012 Bond trading securities Commercial mortgage-backed securities (CMBS)	Mar. 31, 2013 Bond trading securities Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)	Mar. 31, 2012 Bond trading securities Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)	Mar. 31, 2013 Equity securities available for sale	Mar. 31, 2012 Equity securities available for sale	Mar. 31, 2013 Equity securities available for sale Common Stock	Mar. 31, 2012 Equity securities available for sale Common Stock	Mar. 31, 2013 Equity securities available for sale Preferred Stock	Mar. 31, 2012 Equity securities available for sale Preferred Stock	Mar. 31, 2012 Equity securities trading	Dec. 31, 2011 Equity securities trading	Mar. 31, 2013 Other invested assets	Mar. 31, 2012 Other invested assets
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Balance Beginning of Period	$ 39,353	$ 38,027																					$ 24,152	$ 21,956	$ 1,024	$ 960	$ 14	$ 9	$ 1,487	$ 1,935	$ 11,662	$ 10,877	$ 5,124	$ 3,955	$ 4,841	$ 4,220	$ 9,744	$ 9,296	$ 7	$ 396	$ 303	$ 812	$ 554	$ 8,536	$ 8,432	$ 68	$ 156	$ 24	$ 57	$ 44	$ 99	$ 1	$ 1	$ 5,389	$ 6,618
Net Realized and Unrealized Gains (Losses) Included in Income	626	1,416																					238	(140)	1	1	1		(4)	(16)	205	(70)	11	(69)	24	14	318	1,687		22	33	12	33	284	1,621	9	16	9	14		2			61	(147)
Accumulated Other Comprehensive Income (Loss)	690	1,563																					699	1,357	(5)	16		8	6	76	481	793	141	287	76	177										4	(4)	(1)	(12)	5	8			(13)	210
Purchases, Sales, Issues and Settlements, Net	(12)	(196)																					462	1,502	136	100	2	(2)	22	(3)	(262)	1,326	(75)	11	639	70	(461)	(1,793)	(2)	74	(19)	(99)	(135)	(436)	(1,637)	(10)	(6)	(10)	(14)		8			(3)	101
Gross Transfers in, assets	1,432	1,887																					422	1,108			1		77	291	10	348	154	31	180	438	883	32		238		159	32	486			5		5					127	742
Gross Transfers out, assets	(729)	(1,499)																					(499)	(1,096)	(137)	(23)			(139)	(960)		(34)	(40)	(42)	(183)	(37)	(136)	(54)			(3)	(108)	(51)	(28)			(11)				(11)			(94)	(338)
Balance End of Period	41,360	41,198																					25,474	24,687	1,019	1,054	18	15	1,449	1,323	12,096	13,240	5,315	4,173	5,577	4,882	10,348	9,168	5	730	314	776	433	8,842	8,416	71	156	22	50	49	106	1	1	5,467	7,186
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, assets	40	2,242																																			40	2,246		(17)	39	(25)	85	82	2,122										(4)
Balance at the Beginning of the Period			(2,974)	(3,849)	(1,257)	(918)	(1,373)	(2,423)	732	785	2	47	28	1	2	2	(1,991)	(3,273)	(162)	33	(344)	(508)
Net Realized and Unrealized Gains (Losses) Included in Income			347	(512)	205	139	222	(541)	11			28	12	1			175	(143)	7	(410)	(80)	(110)
Accumulated Other Comprehensive Income (loss)				(68)				9												9		(77)
Purchases, Sales, Issues and Settlements-Net			86	1,227	5	(3)	62	1,116	13	(7)	(2)	(7)	2	(1)			41	711	16	412	19	114
Gross Transfers in, liabilities			(4)	(83)			(2)	(83)				(2)	(2)							(81)	(2)
Gross Transfers out, liabilities				6																		6
Balance at the End of the Period			(2,545)	(3,279)	(1,047)	(782)	(1,091)	(1,922)	756	778		66	40	1	2	2	(1,775)	(2,705)	(139)	(37)	(407)	(575)
Changes in Unrealized Gains (Losses) on Instruments Held at End of Period, liabilities			$ (180)	$ (762)	$ 28	$ (144)	$ (216)	$ (514)	$ (3)	$ (23)		$ (12)	$ 10				$ (214)	$ (525)	$ 13	$ 24	$ 8	$ (104)