Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	$ 3,036		$ 2,771		$ 2,275		$ 2,051
Items Included in Net Income	493		(626)		832		(37)
Gains (Losses) in OCI and Other	(2)	[1]	146	[1]	59	[1]	90	[1]
Issuances, Sales, Maturities, Settlements, Calls, Net	185		341		245		499
Transfers In or Out of Level 3, Net	(206)	[2]	(272)	[2]	95	[2]	(243)	[2]
Ending Fair Value	3,506		2,360		3,506		2,360
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1,825	[3]	1,932	[3]	1,505	[3]	1,888	[3]
Items Included in Net Income	(5)	[3]	(4)	[3]	(1)	[3]	(17)	[3]
Gains (Losses) in OCI and Other	(25)	[1],[3]	(11)	[1],[3]	(14)	[1],[3]	(5)	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net	198	[3]	45	[3]	182	[3]	25	[3]
Transfers In or Out of Level 3, Net	(201)	[2],[3]	(284)	[2],[3]	120	[2],[3]	(213)	[2],[3]
Ending Fair Value	1,792	[3]	1,678	[3]	1,792	[3]	1,678	[3]
U.S. Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value			1	[3]	1	[3]	1	[3]
Items Included in Net Income				[3]				[3]
Gains (Losses) in OCI and Other				[1],[3]				[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net				[3]	(1)	[3]		[3]
Transfers In or Out of Level 3, Net				[2],[3]				[2],[3]
Ending Fair Value			1	[3]			1	[3]
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	76	[3]	99	[3]	46	[3]	97	[3]
Gains (Losses) in OCI and Other	(1)	[1],[3]	3	[1],[3]	(1)	[1],[3]	4	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net					30	[3]
Transfers In or Out of Level 3, Net							1	[2],[3]
Ending Fair Value	75	[3]	102	[3]	75	[3]	102	[3]
RMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1	[3]	98	[3]	3	[3]	158	[3]
Items Included in Net Income		[3]					(3)	[3]
Gains (Losses) in OCI and Other		[1],[3]	1	[1],[3]			3	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net		[3]	98	[3]	(2)	[3]	94	[3]
Transfers In or Out of Level 3, Net		[2],[3]	(13)	[2],[3]			(68)	[2],[3]
Ending Fair Value	1	[3]	184	[3]	1	[3]	184	[3]
CMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	27	[3]	32	[3]	27	[3]	34	[3]
Items Included in Net Income	1	[3]	(2)	[3]			(5)	[3]
Gains (Losses) in OCI and Other	3	[1],[3]	2	[1],[3]	5	[1],[3]	9	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net	(3)	[3]	(1)	[3]	(4)	[3]	(8)	[3]
Transfers In or Out of Level 3, Net			8	[2],[3]			9	[2],[3]
Ending Fair Value	28	[3]	39	[3]	28	[3]	39	[3]
CDOs [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	149	[3]	102	[3]	154	[3]	102	[3]
Items Included in Net Income					(1)	[3]
Gains (Losses) in OCI and Other					2	[1],[3]	4	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net	(6)	[3]	18	[3]	(12)	[3]	14	[3]
Ending Fair Value	143	[3]	120	[3]	143	[3]	120	[3]
State And Municipal Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	32	[3]			32	[3]
Gains (Losses) in OCI and Other	(2)	[1],[3]			(2)	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net			32	[3]			32	[3]
Ending Fair Value	30	[3]	32	[3]	30	[3]	32	[3]
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	102	[3]	116	[3]	118	[3]	100	[3]
Items Included in Net Income					(1)	[3]
Gains (Losses) in OCI and Other	(3)	[1],[3]	(3)	[1],[3]	2	[1],[3]	3	[1],[3]
Transfers In or Out of Level 3, Net	(6)	[2],[3]	16	[2],[3]	(26)	[2],[3]	26	[2],[3]
Ending Fair Value	93	[3]	129	[3]	93	[3]	129	[3]
Equity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	110	[3]	61	[3]	87	[3]	56	[3]
Gains (Losses) in OCI and Other			(1)	[1],[3]	2	[1],[3]	4	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net	37	[3]	25	[3]	58	[3]	25	[3]
Ending Fair Value	147	[3]	85	[3]	147	[3]	85	[3]
Trading Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	54	[3]	68	[3]	56	[3]	68	[3]
Items Included in Net Income	1	[3]	1	[3]	1	[3]	1	[3]
Gains (Losses) in OCI and Other	(2)	[1],[3]			(4)	[1],[3]	1	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net	(1)	[3]	2	[3]	(1)	[3]
Transfers In or Out of Level 3, Net	1	[2],[3]	1	[2],[3]	1	[2],[3]	2	[2],[3]
Ending Fair Value	53	[3]	72	[3]	53	[3]	72	[3]
Derivative Investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1,835	[3]	2,037	[3]	2,026	[3]	2,470	[3]
Items Included in Net Income	10	[3]	228	[3]	(248)	[3]	(289)	[3]
Gains (Losses) in OCI and Other	28	[1],[3]	155	[1],[3]	69	[1],[3]	67	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net	(50)	[3]	97	[3]	(24)	[3]	269	[3]
Ending Fair Value	1,823	[3]	2,517	[3]	1,823	[3]	2,517	[3]
Indexed Annuity and Universal Life Contracts [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(853)	[4]	(480)	[4]	(732)	[4]	(399)	[4]
Items Included in Net Income	(19)	[4]	24	[4]	(149)	[4]	(80)	[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	10	[4]	25	[4]	19	[4]	48	[4]
Ending Fair Value	(862)	[4]	(431)	[4]	(862)	[4]	(431)	[4]
GLB Embedded Derivative Reserves [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(199)	[4]	(1,064)	[4]	(909)	[4]	(2,217)	[4]
Items Included in Net Income	491	[4]	(862)	[4]	1,201	[4]	291	[4]
Ending Fair Value	292	[4]	(1,926)	[4]	292	[4]	(1,926)	[4]
VIE's Liabilities - Derivative Instruments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(113)	[5]	(221)	[5]	(128)	[5]	(291)	[5]
Items Included in Net Income	12	[5]	(10)	[5]	27	[5]	60	[5]
Ending Fair Value	(101)	[5]	(231)	[5]	(101)	[5]	(231)	[5]
Credit Default Swaps [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(10)	[6]	(10)	[6]	(11)	[6]	(16)	[6]
Items Included in Net Income	2	[6]	(1)	[6]	3	[6]	5	[6]
Ending Fair Value	$ (8)	[6]	$ (11)	[6]	$ (8)	[6]	$ (11)	[6]

[1] The changes in fair value of the interest rate swaps are offset by an adjustment to derivative investments (see Note 5).

[2] Transfers in or out of Level 3 for AFS and trading securities are displayed at amortized cost as of the beginning-of-period. For AFS and trading securities, the difference between beginning-of-period amortized cost and beginning-of-period fair value was included in OCI and earnings, respectively, in prior periods.

[3] Amortization and accretion of premiums and discounts are included in net investment income on our Consolidated Statements of Comprehensive Income (Loss). Gains (losses) from sales, maturities, settlements and calls and OTTI are included in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).

[4] Gains (losses) from sales, maturities, settlements and calls are included in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).

[5] The changes in fair value of the credit default swaps and contingency forwards are included in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).

[6] Gains (losses) from sales, maturities, settlements and calls are included in net investment income on our Consolidated Statements of Comprehensive Income (Loss).