Fair Value of Assets and Liabilities (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended	3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended						3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended				3 Months Ended	6 Months Ended	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Realized capital gains and losses	Jun. 30, 2013 Realized capital gains and losses	Jun. 30, 2014 Realized capital gains and losses	Jun. 30, 2013 Realized capital gains and losses	Jun. 30, 2014 Net investment income	Jun. 30, 2013 Net investment income	Jun. 30, 2014 Net investment income	Jun. 30, 2013 Net investment income	Jun. 30, 2014 Interest credited to contractholder funds	Jun. 30, 2013 Interest credited to contractholder funds	Jun. 30, 2013 Interest credited to contractholder funds	Jun. 30, 2014 Life and annuity contract benefits	Jun. 30, 2013 Life and annuity contract benefits	Jun. 30, 2014 Life and annuity contract benefits	Jun. 30, 2013 Life and annuity contract benefits	Jun. 30, 2014 Loss on disposition of operations	Jun. 30, 2014 Fixed income securities	Jun. 30, 2013 Fixed income securities	Jun. 30, 2014 Fixed income securities	Jun. 30, 2013 Fixed income securities	Jun. 30, 2014 U.S. government and agencies	Jun. 30, 2013 U.S. government and agencies	Mar. 31, 2014 U.S. government and agencies	Mar. 31, 2013 U.S. government and agencies	Jun. 30, 2014 Municipal	Jun. 30, 2013 Municipal	Jun. 30, 2014 Municipal	Jun. 30, 2013 Municipal	Jun. 30, 2014 Corporate	Jun. 30, 2013 Corporate	Jun. 30, 2014 Corporate	Jun. 30, 2013 Corporate	Jun. 30, 2014 Asset-backed securities ("ABS")	Jun. 30, 2013 Asset-backed securities ("ABS")	Jun. 30, 2014 Asset-backed securities ("ABS")	Jun. 30, 2013 Asset-backed securities ("ABS")	Jun. 30, 2014 Residential mortgage-backed securities ("RMBS")	Jun. 30, 2014 Residential mortgage-backed securities ("RMBS")	Jun. 30, 2013 Residential mortgage-backed securities ("RMBS")	Mar. 31, 2013 Residential mortgage-backed securities ("RMBS")	Dec. 31, 2012 Residential mortgage-backed securities ("RMBS")	Jun. 30, 2014 Commercial mortgage-backed securities ("CMBS")	Jun. 30, 2013 Commercial mortgage-backed securities ("CMBS")	Jun. 30, 2014 Commercial mortgage-backed securities ("CMBS")	Jun. 30, 2013 Commercial mortgage-backed securities ("CMBS")	Mar. 31, 2014 Commercial mortgage-backed securities ("CMBS") LBL	Jun. 30, 2014 Redeemable preferred stock	Jun. 30, 2013 Redeemable preferred stock	Mar. 31, 2013 Redeemable preferred stock	Dec. 31, 2012 Redeemable preferred stock	Jun. 30, 2014 Equity securities	Jun. 30, 2013 Equity securities	Jun. 30, 2014 Equity securities	Jun. 30, 2013 Equity securities	Jun. 30, 2014 Short-term investments	Jun. 30, 2014 Short-term investments	Jun. 30, 2014 Free-standing derivatives, net	Jun. 30, 2013 Free-standing derivatives, net	Jun. 30, 2014 Free-standing derivatives, net	Jun. 30, 2013 Free-standing derivatives, net	Jun. 30, 2014 Other assets	Jun. 30, 2014 Other assets	Jun. 30, 2013 Other assets	Mar. 31, 2013 Other assets	Dec. 31, 2012 Other assets	Jun. 30, 2014 Assets held for sale	Jun. 30, 2014 Assets held for sale	Mar. 31, 2014 Assets held for sale LBL
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward
Balance at beginning of period	$ 1,957	$ 2,713	$ 2,186	$ 3,042																	$ 1,570	$ 2,560	$ 1,697	$ 2,897	$ 7	$ 8	$ 6	$ 7	$ 335	$ 660	$ 343	$ 965	$ 999	$ 1,576	$ 1,109	$ 1,617	$ 174	$ 276	$ 192	$ 251	$ 2	$ 2	$ 3	$ 3	$ 3	$ 54	$ 37	$ 43	$ 52		$ 1	$ 1	$ 1	$ 1	$ 17	$ 172	$ 132	$ 171	$ 30		$ (7)	$ (20)	$ (5)	$ (27)			$ 1	$ 1	$ 1	$ 347	$ 362
Total gains (losses) included in: net income	14	19	32	16	9	12	29	2	4	5	6	12	(10)	39	19	(1)	20	4	46	(4)	8	3	9	(8)						(4)	(4)	(28)	8	9	13	21		(1)									(1)		(1)						2	1	22	2			3	15	(1)	22	1	1					(1)
Total gains (losses) included in: OCI	16	(35)	8	28																	16	(35)	21	27					6	(5)	11	49	9	(38)	10	(39)	1	8		15									2								15	1													2
Transfers into Level 3		38	9	87																		38	5	87								6		38		63				18								5																							4
Transfers out of Level 3	(73)	(172)	(157)	(297)																	(73)	(172)	(155)	(297)					(17)	(6)	(17)	(6)	(12)	(150)	(37)	(275)	(44)	(16)	(101)	(16)																															(2)
Sold in LBL disposition	(347)		(347)																				4																									4																						(347)	(351)
Purchases		223		545																		223		544						52		52		96		360		70		126							5		6															1
Purchases/Issues	49		147																		37		102								1		16		32		20		64							1		5							2		3		10	40			2
Sales	(83)	(281)	(310)	(886)																	(41)	(233)	(139)	(837)					(17)	(124)	(26)	(463)	(24)	(77)	(111)	(276)		(32)		(81)								(1)	(17)		(1)				(2)	(48)	(123)	(49)	(40)	(40)											(8)
Settlements	(47)	(110)	(82)	(140)																	(46)	(108)	(73)	(137)	(1)	(1)			(5)	(20)	(6)	(22)	(31)	(71)	(51)	(88)	(9)	(17)	(13)	(25)	(1)	(1)						(1)	(1)												(1)	(2)	(3)	(3)							(6)
Balance at end of period	1,486	2,395	1,486	2,395																	1,471	2,276	1,471	2,276	6	7	6	7	302	553	302	553	965	1,383	965	1,383	142	288	142	288	1	1	3	3	3	55	41	55	41			1	1	1	19	125	19	125			(5)	(7)	(5)	(7)	1	1	1	1	1
Transfer from held for sale																																																		4																						(4)
Fair value assets and liabilities measured on recurring basis, gain (loss) included in earnings
Total realized and unrealized gains (losses) included in net income, recurring Level 3 assets and liabilities	2	76	35	79
Free-standing derivatives, assets	3	6	3	6
Free-standing derivatives, liabilities	8	13	8	13
Assets transferred between Level 1 and Level 2	0	0	0	0
Liabilities transferred between Level 1 and Level 2	$ 0	$ 0	$ 0	$ 0