Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		$ 2,803	$ 3,353	$ 2,547	$ 3,730
Items Included in Net Income		(1,001)	(63)	(730)	(634)
Gains (Losses) in OCI and Other	[1]	18	4	(137)	306
Issuances, Sales, Maturities, Settlements, Calls, Net		77	74	105	132
Transfers In or Out of Level 3, Net	[2]	(60)	(245)	52	(411)	[3]
Ending Fair Value		1,837	3,123	1,837	3,123
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	2,039	2,197	1,953	1,701
Items Included in Net Income	[4]	3	1	6	9
Gains (Losses) in OCI and Other	[1],[4]	(34)	(34)	(123)	39
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	60	51	150	202
Transfers In or Out of Level 3, Net	[2],[4]	(66)	(266)	16	(2)	[3]
Ending Fair Value	[4]	2,002	1,949	2,002	1,949
ABS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 33	$ 7	$ 33	10
Items Included in Net Income	[4]
Gains (Losses) in OCI and Other	[1],[4]		$ 1		2
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	$ 13		$ 13
Transfers In or Out of Level 3, Net	[2],[4]		$ 26		22	[3]
Ending Fair Value	[4]	$ 46	34	$ 46	34
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 114	$ 108	109	79
Items Included in Net Income	[4]
Gains (Losses) in OCI and Other	[1],[4]	$ (3)		2	4
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]
Transfers In or Out of Level 3, Net	[2],[4]	$ 4		4	25	[3]
Ending Fair Value	[4]	115	$ 108	115	108
RMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 1	$ 1	$ 1	$ 1
Items Included in Net Income	[4]
Gains (Losses) in OCI and Other	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]
Transfers In or Out of Level 3, Net	[2],[4]					[3]
Ending Fair Value	[4]	$ 1	$ 1	$ 1	$ 1
CMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	12	$ 19	15	20
Items Included in Net Income	[4]	1		3
Gains (Losses) in OCI and Other	[1],[4]	2	$ 1	6	1
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	$ (4)	$ (2)	(13)	(9)
Transfers In or Out of Level 3, Net	[2],[4]				6	[3]
Ending Fair Value	[4]	$ 11	$ 18	11	18
CLOs [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 461	210	368	179
Items Included in Net Income	[4]		(2)		(3)
Gains (Losses) in OCI and Other	[1],[4]	$ 1	1	4	5
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	$ 15	$ 45	117	69
Transfers In or Out of Level 3, Net	[2],[4]			(12)	4	[3]
Ending Fair Value	[4]	$ 477	$ 254	477	254
State And Municipal Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]				28
Gains (Losses) in OCI and Other	[1],[4]				1
Transfers In or Out of Level 3, Net	[2],[3],[4]				(29)
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 96	$ 52	55	66
Items Included in Net Income	[4]			(1)
Gains (Losses) in OCI and Other	[1],[4]	$ (2)		(3)	1
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]				(5)
Transfers In or Out of Level 3, Net	[2],[4]			43	(10)	[3]
Ending Fair Value	[4]	$ 94	$ 52	94	52
Equity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	141	$ 158	157	161
Items Included in Net Income	[4]	$ 1		2	3
Gains (Losses) in OCI and Other	[1],[4]				(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	$ 19		3	(5)
Transfers In or Out of Level 3, Net	[2],[4]			(1)
Ending Fair Value	[4]	$ 161	$ 158	161	158
Trading Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	72	67	73	52
Items Included in Net Income	[4]	1	1	2	4
Gains (Losses) in OCI and Other	[1],[4]	$ 1	(2)	(1)	4
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]		8		10
Transfers In or Out of Level 3, Net	[2],[4]	$ 2	(5)	2	(1)	[3]
Ending Fair Value	[4]	76	69	76	69
Derivative Investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	740	780	989	1,266
Items Included in Net Income	[4]	158	278	185	128
Gains (Losses) in OCI and Other	[1],[4]	53	37	(22)	250
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	$ (52)	$ (72)	(253)	(195)
Transfers In or Out of Level 3, Net	[2],[4]				(426)	[3]
Ending Fair Value	[4]	$ 899	$ 1,023	$ 899	1,023
GLB Embedded Derivative Reserves [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	254	932
Items Included in Net Income	[5]	$ (254)	$ (340)		(652)
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]
Transfers In or Out of Level 3, Net	[2],[5]				1,244	[3]
Ending Fair Value	[5]		$ 592		592
GLB Embedded Derivative Reserves [Member] | Future contract benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]				1,244
Transfers In or Out of Level 3, Net	[2],[3],[5]				(1,244)
GLB Embedded Derivative Reserves [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	$ (102)	(54)	$ (174)	(27)
Items Included in Net Income	[5]	$ (1,185)	$ (25)	(1,113)	(52)
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]
Transfers In or Out of Level 3, Net	[2],[5]
Ending Fair Value	[5]	$ (1,287)	$ (79)	(1,287)	(79)
Other Assets Reinsurance Recoverable [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	102	54	154	27
Items Included in Net Income	[5]	192	25	140	52
Ending Fair Value	[5]	294	79	294	79
Indexed Annuity and IUL Contracts [Member] | Future contract benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	(1,155)	(1,167)	(1,170)	(1,048)
Items Included in Net Income	[5]	$ 86	$ 6	39	(134)
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	$ 26	$ 44	88	65
Transfers In or Out of Level 3, Net	[2],[5]
Ending Fair Value	[5]	$ (1,043)	$ (1,117)	(1,043)	(1,117)
VIE's Liabilities - Derivative Instruments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[6]	(3)	(10)	(13)	(27)
Items Included in Net Income	[6]	$ 1	$ (7)	11	10
Gains (Losses) in OCI and Other	[1],[6]
Issuances, Sales, Maturities, Settlements, Calls, Net	[6]
Transfers In or Out of Level 3, Net	[2],[6]
Ending Fair Value	[6]	$ (2)	$ (17)	(2)	(17)
Credit Default Swaps [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[7]	(2)	$ (1)	(3)	(2)
Items Included in Net Income	[7]	$ (5)		(4)	1
Gains (Losses) in OCI and Other	[1],[7]
Issuances, Sales, Maturities, Settlements, Calls, Net	[7]
Transfers In or Out of Level 3, Net	[2],[7]
Ending Fair Value	[7]	$ (7)	$ (1)	$ (7)	$ (1)

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

[2] Transfers into 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] Transfers into or out of Level 3 for GLB reserves embedded derivatives between future contract benefits, other assets and other liabilities on our Consolidated Balance Sheets.

[4] 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).

[5] Gains (losses) from sales, maturities, settlements and calls 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).

[7] 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).