Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		$ 2,209	$ 3,257	$ 2,547	$ 3,730
Items Included in Net Income		719	(159)	272	(571)
Gains (Losses) in OCI and Other	[1]	(185)	134	(156)	302
Issuances, Sales, Maturities, Settlements, Calls, Net		47	88	28	58
Transfers In or Out of Level 3, Net	[2]	13	33	112	(166)	[3]
Ending Fair Value		2,803	3,353	2,803	3,353
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 2,033	1,946	1,953	1,701
Items Included in Net Income	[4]		5	3	9
Gains (Losses) in OCI and Other	[1],[4]	$ (58)	50	(89)	73
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	61	132	90	150
Transfers In or Out of Level 3, Net	[2],[4]	3	64	82	264	[3]
Ending Fair Value	[4]	2,039	2,197	2,039	2,197
ABS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 33	$ 12	$ 33	10
Items Included in Net Income	[4]
Gains (Losses) in OCI and Other	[1],[4]		$ (1)		1
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]
Transfers In or Out of Level 3, Net	[2],[4]		$ (4)		(4)	[3]
Ending Fair Value	[4]	$ 33	7	$ 33	7
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 113	$ 107	109	79
Items Included in Net Income	[4]
Gains (Losses) in OCI and Other	[1],[4]	$ 1	$ 1	5	4
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]
Transfers In or Out of Level 3, Net	[2],[4]				25	[3]
Ending Fair Value	[4]	$ 114	$ 108	114	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]
Ending Fair Value	[4]	$ 1	$ 1	$ 1	$ 1
CMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	15	$ 21	15	20
Items Included in Net Income	[4]	1		2
Gains (Losses) in OCI and Other	[1],[4]	2		4	1
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	$ (6)	$ (2)	(9)	(8)
Transfers In or Out of Level 3, Net	[2],[4]				6	[3]
Ending Fair Value	[4]	$ 12	$ 19	12	19
CLOs [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 416	$ 195	368	179
Items Included in Net Income	[4]
Gains (Losses) in OCI and Other	[1],[4]		$ 2	3	3
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	$ 57	17	102	24
Transfers In or Out of Level 3, Net	[2],[4]	(12)	(4)	(12)	4	[3]
Ending Fair Value	[4]	461	210	461	210
State And Municipal Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]		$ 29		28
Items Included in Net Income	[4]
Gains (Losses) in OCI and Other	[1],[4]				1
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]
Transfers In or Out of Level 3, Net	[2],[4]		$ (29)		$ (29)	[3]
Ending Fair Value	[4]
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	75	$ 55	55	$ 66
Items Included in Net Income	[4]	(1)		(1)
Gains (Losses) in OCI and Other	[1],[4]	$ (1)	$ 2	(1)	1
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]		$ (5)		(5)
Transfers In or Out of Level 3, Net	[2],[4]	$ 23		43	(10)	[3]
Ending Fair Value	[4]	96	$ 52	96	52
Equity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	135	162	157	161
Items Included in Net Income	[4]	1	3	1	3
Gains (Losses) in OCI and Other	[1],[4]	(2)	(3)		(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	8	$ (4)	(16)	(5)
Transfers In or Out of Level 3, Net	[2],[4]	(1)		(1)
Ending Fair Value	[4]	141	$ 158	141	158
Trading Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ 75	53	73	52
Items Included in Net Income	[4]		1	1	2
Gains (Losses) in OCI and Other	[1],[4]	$ (4)	3	(2)	6
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	$ 1	4		3
Transfers In or Out of Level 3, Net	[2],[4]		6		4	[3]
Ending Fair Value	[4]	$ 72	67	72	67
Derivative Investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	849	811	989	1,266
Items Included in Net Income	[4]	122	(42)	28	(150)
Gains (Losses) in OCI and Other	[1],[4]	(123)	80	(76)	213
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	$ (108)	$ (69)	(201)	(123)
Transfers In or Out of Level 3, Net	[2],[4]				(426)	[3]
Ending Fair Value	[4]	$ 740	$ 780	740	780
GLB Embedded Derivative Reserves [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]		979
Items Included in Net Income	[5]	$ 254	$ (47)	254	(312)
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]	$ 254	$ 932	254	932
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]	(552)	(43)	(174)	(27)
Items Included in Net Income	[5]	$ 450	$ (11)	72	(27)
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]	$ (102)	$ (54)	(102)	(54)
Reinsurance Recoverable [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	204	43	154	27
Items Included in Net Income	[5]	(102)	11	(52)	27
Ending Fair Value	[5]	102	54	102	54
Indexed Annuity and IUL Contracts [Member] | Future contract benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	(1,180)	(1,090)	(1,170)	(1,048)
Items Included in Net Income	[5]	$ (9)	$ (92)	(47)	(141)
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	$ 34	$ 15	62	22
Transfers In or Out of Level 3, Net	[2],[5]
Ending Fair Value	[5]	$ (1,155)	$ (1,167)	(1,155)	(1,167)
VIE's Liabilities - Derivative Instruments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[6]	(5)	(22)	(13)	(27)
Items Included in Net Income	[6]	$ 2	$ 12	10	17
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]	$ (3)	$ (10)	(3)	(10)
Credit Default Swaps [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[7]	(3)	(2)	(3)	(2)
Items Included in Net Income	[7]	$ 1	$ 1	1	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]	$ (2)	$ (1)	$ (2)	$ (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 the prior period.

[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).