Investments and Derivative Instruments Level 4 Derivative Balance Sheet Classification (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
Derivative Balance Sheet Classification [Table]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	$ 1,100,000,000		$ 1,100,000,000
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	71,313,000,000		72,850,000,000
Derivative, Fair Value, Net	(555,000,000)		(639,000,000)
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	1,582,000,000		1,267,000,000
Derivative Asset, Fair Value, Gross Asset	1,495,000,000		1,175,000,000
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	2,137,000,000		1,906,000,000
Derivative Liability, Fair Value, Gross Liability	(1,933,000,000)		(1,741,000,000)
Fixed Maturities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	454,000,000		454,000,000
Derivative, Fair Value, Net	(2,000,000)		2,000,000
Derivative Asset, Fair Value, Gross Asset	0		2,000,000
Derivative Liability, Fair Value, Gross Liability	(2,000,000)		0
Other Investments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	22,729,000,000		23,014,000,000
Derivative, Fair Value, Net	445,000,000		364,000,000
Derivative Asset, Fair Value, Gross Asset	659,000,000		624,000,000
Derivative Liability, Fair Value, Gross Liability	(214,000,000)		(260,000,000)
Other Liabilities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	26,524,000,000		26,791,000,000
Derivative, Fair Value, Net	(883,000,000)		(930,000,000)
Derivative Asset, Fair Value, Gross Asset	836,000,000		551,000,000
Derivative Liability, Fair Value, Gross Liability	(1,719,000,000)		(1,481,000,000)
Reinsurance Recoverables [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	4,477,000,000		4,633,000,000
Derivative, Fair Value, Net	87,000,000		90,000,000
Derivative Asset, Fair Value, Gross Asset	87,000,000		90,000,000
Derivative Liability, Fair Value, Gross Liability	0		0
Other Policyholder Funds and Benefits Payable [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	17,129,000,000		17,958,000,000
Derivative, Fair Value, Net	(202,000,000)		(165,000,000)
Derivative, Fair Value, Net	202,000,000
Derivative Asset, Fair Value, Gross Asset	0		0
Derivative Liability, Fair Value, Gross Liability	(202,000,000)		(165,000,000)
Derivative Financial Instruments, Assets [Member] | Other Investments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net	(445,000,000)	[1]	(364,000,000)	[1]
Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net	880,000,000	[2]	927,000,000	[2]
Embedded Derivative Financial Instruments [Member] | Other Liabilities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net	3,000,000	[3]	3,000,000
Interest Rate Swap [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	13,100,000,000		13,100,000,000
Cash Flow Hedging Interest Rate Swaps [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	4,001,000,000		3,999,000,000
Derivative, Fair Value, Net	100,000,000		44,000,000
Derivative Asset, Fair Value, Gross Asset	101,000,000		52,000,000
Derivative Liability, Fair Value, Gross Liability	(1,000,000)		(8,000,000)
Cash Flow Hedges Foreign Currency Swaps [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	143,000,000		143,000,000
Derivative, Fair Value, Net	(27,000,000)		(19,000,000)
Derivative Asset, Fair Value, Gross Asset	6,000,000		3,000,000
Derivative Liability, Fair Value, Gross Liability	(33,000,000)		(22,000,000)
Cash Flow Hedging [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	4,144,000,000		4,142,000,000
Derivative, Fair Value, Net	73,000,000		25,000,000
Derivative Asset, Fair Value, Gross Asset	107,000,000		55,000,000
Derivative Liability, Fair Value, Gross Liability	(34,000,000)		(30,000,000)
Fair Value Hedging Interest Rate Swaps [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	66,000,000		32,000,000
Derivative, Fair Value, Net	0		0
Derivative Asset, Fair Value, Gross Asset	0		0
Derivative Liability, Fair Value, Gross Liability	0		0
Fair Value Hedging [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	66,000,000		32,000,000
Derivative, Fair Value, Net	0		0
Derivative Asset, Fair Value, Gross Asset	0		0
Derivative Liability, Fair Value, Gross Liability	0		0
Interest Rate Swaps Caps Floors and Futures [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	15,295,000,000		15,254,000,000
Derivative, Fair Value, Net	(501,000,000)		(512,000,000)
Derivative Asset, Fair Value, Gross Asset	718,000,000		536,000,000
Derivative Liability, Fair Value, Gross Liability	(1,219,000,000)		(1,048,000,000)
Foreign Currency Swaps and Forwards Non-qualifying as Hedges [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	179,000,000		177,000,000
Derivative, Fair Value, Net	8,000,000		1,000,000
Derivative Asset, Fair Value, Gross Asset	9,000,000		3,000,000
Derivative Liability, Fair Value, Gross Liability	(1,000,000)		(2,000,000)
Credit Derivatives that Purchase Credit Protection [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	197,000,000		595,000,000
Derivative, Fair Value, Net	(3,000,000)		(6,000,000)
Derivative Asset, Fair Value, Gross Asset	0		4,000,000
Derivative Liability, Fair Value, Gross Liability	(3,000,000)		(10,000,000)
Credit Derivatives that Assume Credit Risk [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	1,863,000,000		1,487,000,000
Derivative, Fair Value, Net	8,000,000		3,000,000
Derivative Asset, Fair Value, Gross Asset	21,000,000		14,000,000
Derivative Liability, Fair Value, Gross Liability	(13,000,000)		(11,000,000)
Credit Derivatives in Offsetting Positions [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	5,150,000,000		5,343,000,000
Derivative, Fair Value, Net	(3,000,000)		(3,000,000)
Derivative Asset, Fair Value, Gross Asset	49,000,000		53,000,000
Derivative Liability, Fair Value, Gross Liability	(52,000,000)		(56,000,000)
Equity Index Swaps Options [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	541,000,000		635,000,000
Derivative, Fair Value, Net	4,000,000		2,000,000
Derivative Asset, Fair Value, Gross Asset	34,000,000		31,000,000
Derivative Liability, Fair Value, Gross Liability	(30,000,000)		(29,000,000)
Commodity Option [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	582,000,000		0
Derivative, Fair Value, Net	10,000,000		0
Derivative Asset, Fair Value, Gross Asset	10,000,000		0
Derivative Liability, Fair Value, Gross Liability	0		0
Contingent Capital Facility Put Option [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	500,000,000		500,000,000
Derivative, Fair Value, Net	11,000,000		12,000,000
Derivative Asset, Fair Value, Gross Asset	11,000,000		12,000,000
Derivative Liability, Fair Value, Gross Liability	0		0
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	963,000,000		974,000,000
Derivative, Fair Value, Net	22,000,000		34,000,000
Derivative Asset, Fair Value, Gross Asset	22,000,000		34,000,000
Derivative Liability, Fair Value, Gross Liability	0		0
Non-qualifying Strategies [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	67,103,000,000		68,676,000,000
Derivative, Fair Value, Net	(628,000,000)		(664,000,000)
Derivative Asset, Fair Value, Gross Asset	1,475,000,000		1,212,000,000
Derivative Liability, Fair Value, Gross Liability	(2,103,000,000)		(1,876,000,000)
JAPAN | Three Win Related Foreign Currency Swaps [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	1,319,000,000		1,319,000,000
Derivative, Fair Value, Net	(441,000,000)		(427,000,000)
Derivative Asset, Fair Value, Gross Asset	0		0
Derivative Liability, Fair Value, Gross Liability	(441,000,000)		(427,000,000)
UNITED STATES | GMWB Hedging Instruments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	12,179,000,000		14,442,000,000
Derivative, Fair Value, Net	181,000,000		174,000,000
Derivative Asset, Fair Value, Gross Asset	309,000,000		289,000,000
Derivative Liability, Fair Value, Gross Liability	(128,000,000)		(115,000,000)
UNITED STATES | Macro Hedge Program [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	7,742,000,000		6,383,000,000
Derivative, Fair Value, Net	187,000,000		141,000,000
Derivative Asset, Fair Value, Gross Asset	227,000,000		180,000,000
Derivative Liability, Fair Value, Gross Liability	(40,000,000)		(39,000,000)
UNITED STATES | Macro Hedge Program [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	7,742,000,000		6,383,000,000
Derivative, Fair Value, Net	187,000,000		141,000,000
UNITED STATES | Macro Hedge Program [Member] | Other Investments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net	(135,000,000)		(93,000,000)
UNITED STATES | Macro Hedge Program [Member] | Other Liabilities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net	(52,000,000)		(48,000,000)
UNITED STATES | GMWB Product Derivatives [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	17,079,000,000		17,908,000,000
Derivative, Fair Value, Net	(176,000,000)		(139,000,000)
Derivative Asset, Fair Value, Gross Asset	0		0
Derivative Liability, Fair Value, Gross Liability	(176,000,000)		(139,000,000)
UNITED STATES | GMWB Reinsurance [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	3,514,000,000		3,659,000,000
Derivative, Fair Value, Net	65,000,000		56,000,000
Derivative Asset, Fair Value, Gross Asset	65,000,000		56,000,000
Derivative Liability, Fair Value, Gross Liability	$ 0		$ 0

[1] Includes over-the-counter ("OTC") and OTC-cleared derivative instruments in a net positive fair value position after consideration of the accrued interest and impact of collateral posting requirements which may be imposed by agreements, clearing house rules and applicable law. As of March 31, 2015 and December 31, 2014, $389 and $413, respectively, of cash collateral liability was netted against the derivative asset value in the Condensed Consolidated Balance Sheets and is excluded from the preceding table. See the following footnote 4 for derivative liabilities.

[2] Includes OTC and OTC-cleared derivative instruments in a net negative fair market value position (derivative liability) after consideration of the accrued interest and impact of collateral posting requirements which may be imposed by agreements, clearing house rules and applicable law. In the following Level 3 roll-forward table in this Note 4, the derivative assets and liabilities are referred to as “freestanding derivatives” and are presented on a net basis.

[3] Represents embedded derivatives associated with non-funding agreement-backed consumer equity linked notes.