Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	$ 3,353		$ 3,493		$ 3,730		$ 2,275
Items Included in Net Income	(63)		27		(634)		845
Gains (Losses) in OCI and Other	4	[1]	22	[1]	306	[1]	81	[1]
Issuances, Sales, Maturities, Settlements, Calls, Net	74		(10)		132		14
Transfers In or Out of Level 3, Net	(245)	[2],[3]	(145)	[2]	(411)	[2],[3]	172	[2]
Ending Fair Value	3,123		3,387		3,123		3,387
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	2,204	[4]	1,792	[4]	1,711	[4]	1,505	[4]
Items Included in Net Income	1	[4]	2	[4]	9	[4]	(1)	[4]
Gains (Losses) in OCI and Other	(33)	[1],[4]	(2)	[1],[4]	41	[1],[4]	(12)	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	51	[4]	14	[4]	202	[4]	(26)	[4]
Transfers In or Out of Level 3, Net	(240)	[2],[3],[4]	(126)	[2],[4]	20	[2],[3],[4]	214	[2],[4]
Ending Fair Value	1,983	[4]	1,680	[4]	1,983	[4]	1,680	[4]
U.S. Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value							1	[4]
Issuances, Sales, Maturities, Settlements, Calls, Net							(1)	[4]
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	108	[4]	75	[4]	79	[4]	46	[4]
Items Included in Net Income		[4]
Gains (Losses) in OCI and Other		[1],[4]	1	[1],[4]	4	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net		[4]	20	[4]			50	[4]
Transfers In or Out of Level 3, Net		[2],[3],[4]			25	[2],[3],[4]
Ending Fair Value	108	[4]	96	[4]	108	[4]	96	[4]
RMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1	[4]	1	[4]	1	[4]	3	[4]
Items Included in Net Income		[4]		[4]		[4]
Gains (Losses) in OCI and Other		[1],[4]		[1],[4]		[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net		[4]		[4]		[4]	(2)	[4]
Transfers In or Out of Level 3, Net		[2],[3],[4]		[2],[4]		[2],[3],[4]
Ending Fair Value	1	[4]	1	[4]	1	[4]	1	[4]
CMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	19	[4]	28	[4]	20	[4]	27	[4]
Items Included in Net Income			1	[4]			1	[4]
Gains (Losses) in OCI and Other	1	[1],[4]	(1)	[1],[4]	1	[1],[4]	4	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	[4]	(1)	[4]	(9)	[4]	(5)	[4]
Transfers In or Out of Level 3, Net			(8)	[2],[4]	6	[2],[3],[4]	(8)	[2],[4]
Ending Fair Value	18	[4]	19	[4]	18	[4]	19	[4]
CLOs [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	210	[4]	143	[4]	179	[4]	154	[4]
Items Included in Net Income	(2)	[4]			(3)	[4]	(1)	[4]
Gains (Losses) in OCI and Other	1	[1],[4]	1	[1],[4]	5	[1],[4]	2	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	45	[4]	29	[4]	69	[4]	18	[4]
Transfers In or Out of Level 3, Net					4	[2],[3],[4]
Ending Fair Value	254	[4]	173	[4]	254	[4]	173	[4]
State And Municipal Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value			30	[4]	28	[4]	32	[4]
Items Included in Net Income				[4]
Gains (Losses) in OCI and Other			(1)	[1],[4]	1	[1],[4]	(3)	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net				[4]
Transfers In or Out of Level 3, Net				[2],[4]	(29)	[2],[3],[4]
Ending Fair Value			29	[4]			29	[4]
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	52	[4]	93	[4]	66	[4]	118	[4]
Items Included in Net Income		[4]
Gains (Losses) in OCI and Other		[1],[4]	2	[1],[4]	1	[1],[4]	2	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net		[4]	(11)	[4]	(5)	[4]	(11)	[4]
Transfers In or Out of Level 3, Net		[2],[3],[4]	(18)	[2],[4]	(10)	[2],[3],[4]	(43)	[2],[4]
Ending Fair Value	52	[4]	66	[4]	52	[4]	66	[4]
Equity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	158	[4]	147	[4]	161	[4]	87	[4]
Items Included in Net Income		[4]	(1)	[4]	3	[4]	(1)	[4]
Gains (Losses) in OCI and Other		[1],[4]	1	[1],[4]	(1)	[1],[4]	3	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net		[4]			(5)	[4]	58	[4]
Transfers In or Out of Level 3, Net		[2],[3],[4]
Ending Fair Value	158	[4]	147	[4]	158	[4]	147	[4]
Trading Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	67	[4]	53	[4]	52	[4]	56	[4]
Items Included in Net Income	1	[4]			4	[4]	1	[4]
Gains (Losses) in OCI and Other	(2)	[1],[4]	(3)	[1],[4]	4	[1],[4]	(8)	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	8	[4]	(2)	[4]	10	[4]	(3)	[4]
Transfers In or Out of Level 3, Net	(5)	[2],[3],[4]	7	[2],[4]	(1)	[2],[3],[4]	9	[2],[4]
Ending Fair Value	69	[4]	55	[4]	69	[4]	55	[4]
Derivative Investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	780	[4]	1,823	[4]	1,266	[4]	2,026	[4]
Items Included in Net Income	278	[4]	(368)	[4]	128	[4]	(616)	[4]
Gains (Losses) in OCI and Other	37	[1],[4]	24	[1],[4]	250	[1],[4]	93	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	(72)	[4]	(73)	[4]	(195)	[4]	(97)	[4]
Transfers In or Out of Level 3, Net					(426)	[2],[3],[4]
Ending Fair Value	1,023	[4]	1,406	[4]	1,023	[4]	1,406	[4]
GLB Embedded Derivative Reserves [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	932	[5]
Items Included in Net Income	(340)	[5]			(652)	[5]
Transfers In or Out of Level 3, Net					1,244	[2],[3],[5]
Ending Fair Value	592	[5]			592	[5]
GLB Embedded Derivative Reserves [Member] | Future contract benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value			292	[5]	1,244	[5]	(909)	[5]
Items Included in Net Income			419	[5]			1,620	[5]
Transfers In or Out of Level 3, Net					(1,244)	[2],[3],[5]
Ending Fair Value			711	[5]			711	[5]
GLB Embedded Derivative Reserves [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(54)	[5]			(27)	[5]
Items Included in Net Income	(25)	[5]			(52)	[5]
Ending Fair Value	(79)	[5]			(79)	[5]
Reinsurance Recoverable [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	54	[5]			27	[5]
Items Included in Net Income	25	[5]			52	[5]
Ending Fair Value	79	[5]			79	[5]
Indexed Annuity and Universal Life Contracts Embedded Derivatives [Member] | Future contract benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(1,167)	[5]	(875)	[5]	(1,048)	[5]	(732)	[5]
Items Included in Net Income	6	[5]	(63)	[5]	(134)	[5]	(225)	[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	44	[5]	14	[5]	65	[5]	33	[5]
Ending Fair Value	(1,117)	[5]	(924)	[5]	(1,117)	[5]	(924)	[5]
VIE's Liabilities - Derivative Instruments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(10)	[6]	(101)	[6]	(27)	[6]	(128)	[6]
Items Included in Net Income	(7)	[6]	34	[6]	10	[6]	61	[6]
Ending Fair Value	(17)	[6]	(67)	[6]	(17)	[6]	(67)	[6]
Credit Default Swaps [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(1)	[7]	(8)	[7]	(2)	[7]	(11)	[7]
Items Included in Net Income		[7]	3	[7]	1	[7]	6	[7]
Gains (Losses) in OCI and Other		[1],[7]
Issuances, Sales, Maturities, Settlements, Calls, Net		[7]
Transfers In or Out of Level 3, Net		[2],[3],[7]
Ending Fair Value	$ (1)	[7]	$ (5)	[7]	$ (1)	[7]	$ (5)	[7]

[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] Transfers in or out of Level 3 for GLB reserves embedded derivatives represent reclassifications 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).