FAIR VALUE MEASUREMENTS (Details 4) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, Sales, Issues and Settlements, Net, assets	$ (12,000,000)	$ (196,000,000)
Issuances	0	0
Transfers into Level 3 at end of reporting period, net gains (losses) not included in realized and unrealized gains and losses related to Level 3 for the period	72,000,000
Transfers out Level 3 at end of reporting period, net gains (losses) not included in realized and unrealized gains and losses related to Level 3 for the period.	2,000,000
Liabilities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, liabilities	3,000,000	2,000,000
Sales, liabilities	(10,000,000)	(6,000,000)
Settlements, liabilities	93,000,000	1,231,000,000
Purchases, Sales, Issues and Settlements, Net, liabilities	86,000,000	1,227,000,000
Policyholder contract deposits
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Sales, liabilities	(6,000,000)	(6,000,000)
Settlements, liabilities	11,000,000	3,000,000
Purchases, Sales, Issues and Settlements, Net, liabilities	5,000,000	(3,000,000)
Derivative liabilities, net
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, liabilities	3,000,000	2,000,000
Sales, liabilities	(4,000,000)
Settlements, liabilities	63,000,000	1,114,000,000
Purchases, Sales, Issues and Settlements, Net, liabilities	62,000,000	1,116,000,000
Transfers out Level 3 at end of reporting period, net gains (losses) not included in realized and unrealized gains and losses related to Level 3 for the period.	0
Other long-term debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Settlements, liabilities	19,000,000	114,000,000
Purchases, Sales, Issues and Settlements, Net, liabilities	19,000,000	114,000,000
Assets
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	2,588,000,000	2,914,000,000
Sales, assets	(656,000,000)	(558,000,000)
Settlements, assets	(1,944,000,000)	(2,552,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	(12,000,000)	(196,000,000)
Bonds available for sale
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	2,032,000,000	2,524,000,000
Sales, assets	(558,000,000)	(173,000,000)
Settlements, assets	(1,012,000,000)	(849,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	462,000,000	1,502,000,000
Bonds available for sale | Obligations of states, municipalities and political subdivisions
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	158,000,000	108,000,000
Sales, assets	(22,000,000)	(8,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	136,000,000	100,000,000
Bonds available for sale | Non-U.S. government
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	3,000,000
Sales, assets		(2,000,000)
Settlements, assets	(1,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	2,000,000	(2,000,000)
Bonds available for sale | Corporate debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	97,000,000	61,000,000
Sales, assets		(1,000,000)
Settlements, assets	(75,000,000)	(63,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	22,000,000	(3,000,000)
Bonds available for sale | Residential mortgage backed securities (RMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	603,000,000	1,912,000,000
Sales, assets	(231,000,000)	(94,000,000)
Settlements, assets	(634,000,000)	(492,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	(262,000,000)	1,326,000,000
Bonds available for sale | Commercial mortgage-backed securities (CMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	373,000,000	126,000,000
Sales, assets	(146,000,000)	(64,000,000)
Settlements, assets	(302,000,000)	(51,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	(75,000,000)	11,000,000
Bonds available for sale | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	798,000,000	317,000,000
Sales, assets	(159,000,000)	(4,000,000)
Settlements, assets		(243,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	639,000,000	70,000,000
Bond trading securities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	312,000,000	113,000,000
Sales, assets	(58,000,000)	(367,000,000)
Settlements, assets	(715,000,000)	(1,539,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	(461,000,000)	(1,793,000,000)
Bond trading securities | Corporate debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Settlements, assets		(2,000,000)
Purchases, Sales, Issues and Settlements, Net, assets		(2,000,000)
Bond trading securities | Residential mortgage backed securities (RMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	105,000,000
Settlements, assets	(31,000,000)	(19,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	74,000,000	(19,000,000)
Bond trading securities | Commercial mortgage-backed securities (CMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	19,000,000	113,000,000
Sales, assets	(58,000,000)	(57,000,000)
Settlements, assets	(60,000,000)	(191,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	(99,000,000)	(135,000,000)
Bond trading securities | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	188,000,000
Sales, assets		(310,000,000)
Settlements, assets	(624,000,000)	(1,327,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	(436,000,000)	(1,637,000,000)
Equity securities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	1,000,000	11,000,000
Sales, assets	(10,000,000)	(14,000,000)
Settlements, assets	(1,000,000)	(3,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	(10,000,000)	(6,000,000)
Other invested assets
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation
Purchases, assets	243,000,000	266,000,000
Sales, assets	(30,000,000)	(4,000,000)
Settlements, assets	(216,000,000)	(161,000,000)
Purchases, Sales, Issues and Settlements, Net, assets	$ (3,000,000)	$ 101,000,000