Investments and Derivative Instruments Level 4 Derivative Balance Sheet Classification (Details) - USD ($)		3 Months Ended		9 Months Ended
		Dec. 31, 2014		Sep. 30, 2015	Sep. 30, 2014
Derivative Balance Sheet Classification [Table]
Financing Receivable, Allowance for Credit Losses, Recovery		$ 0		$ 2,000,000	$ 11,000,000
Derivative Liability, Fair Value, Amount Not Offset Against Collateral		1,100,000,000		1,200,000,000
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		72,850,000,000		63,704,000,000
Derivative, Fair Value, Net		(639,000,000)		(778,000,000)
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		1,267,000,000		1,381,000,000
Derivative Asset, Fair Value, Gross Asset		1,175,000,000		1,246,000,000
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		1,906,000,000		2,159,000,000
Derivative Liability, Fair Value, Gross Liability		(1,741,000,000)		(1,865,000,000)
Reinsurance Recoverable [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		4,633,000,000		4,151,000,000
Derivative, Fair Value, Net		90,000,000		135,000,000
Derivative Asset, Fair Value, Gross Asset		90,000,000		135,000,000
Derivative Liability, Fair Value, Gross Liability		0		0
Fixed Maturities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		454,000,000		447,000,000
Derivative, Fair Value, Net		2,000,000		(3,000,000)
Derivative Asset, Fair Value, Gross Asset		2,000,000		0
Derivative Liability, Fair Value, Gross Liability		0		(3,000,000)
Other Investments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		23,014,000,000		11,123,000,000
Derivative, Fair Value, Net		364,000,000		304,000,000
Derivative Asset, Fair Value, Gross Asset		624,000,000		363,000,000
Derivative Liability, Fair Value, Gross Liability		(260,000,000)		(59,000,000)
Other Liabilities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		26,791,000,000		32,203,000,000
Derivative, Fair Value, Net		(930,000,000)		(923,000,000)
Derivative Asset, Fair Value, Gross Asset		551,000,000		883,000,000
Derivative Liability, Fair Value, Gross Liability		(1,481,000,000)		(1,806,000,000)
Other Policyholder Funds and Benefits Payable [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		17,958,000,000		15,780,000,000
Derivative, Fair Value, Net		(165,000,000)		(291,000,000)
Derivative, Fair Value, Net				291,000,000
Derivative Asset, Fair Value, Gross Asset		0		0
Derivative Liability, Fair Value, Gross Liability		(165,000,000)		(291,000,000)
Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		68,676,000,000		59,544,000,000
Derivative, Fair Value, Net		(664,000,000)		(846,000,000)
Derivative Asset, Fair Value, Gross Asset		1,212,000,000		1,286,000,000
Derivative Liability, Fair Value, Gross Liability		(1,876,000,000)		(2,132,000,000)
Interest Rate Contract [Member] | Other Investments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net		(129,000,000)		(79,000,000)
Interest Rate Contract [Member] | Other Liabilities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net				648,000,000
Foreign Exchange Contract [Member] | Other Investments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net				(10,000,000)
Foreign Exchange Contract [Member] | Other Liabilities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net				469,000,000
Derivative Financial Instruments, Assets [Member] | Other Investments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net	[1]	(364,000,000)	[2]	(304,000,000)
Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net	[3]	927,000,000	[4]	923,000,000
Embedded Derivative Financial Instruments [Member] | Other Liabilities [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Fair Value, Net	[5]	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		13,000,000,000
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		177,000,000		305,000,000
Derivative, Fair Value, Net		1,000,000		11,000,000
Derivative Asset, Fair Value, Gross Asset		3,000,000		11,000,000
Derivative Liability, Fair Value, Gross Liability		(2,000,000)		0
Credit Default Swap, Buying Protection [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		595,000,000		304,000,000
Derivative, Fair Value, Net		(6,000,000)		11,000,000
Derivative Asset, Fair Value, Gross Asset		4,000,000		14,000,000
Derivative Liability, Fair Value, Gross Liability		(10,000,000)		(3,000,000)
Credit Default Swap, Selling Protection [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	[6]	1,487,000,000		2,645,000,000
Derivative, Fair Value, Net	[6]	3,000,000		(28,000,000)
Derivative Asset, Fair Value, Gross Asset	[6]	14,000,000		5,000,000
Derivative Liability, Fair Value, Gross Liability	[6]	(11,000,000)		(33,000,000)
Credit Derivatives in Offsetting Positions [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		5,343,000,000		4,127,000,000
Derivative, Fair Value, Net		(3,000,000)		(2,000,000)
Derivative Asset, Fair Value, Gross Asset		53,000,000		39,000,000
Derivative Liability, Fair Value, Gross Liability		(56,000,000)		(41,000,000)
Equity Contract [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		635,000,000		124,000,000
Derivative, Fair Value, Net		2,000,000		(1,000,000)
Derivative Asset, Fair Value, Gross Asset		31,000,000		20,000,000
Derivative Liability, Fair Value, Gross Liability		(29,000,000)		(21,000,000)
Commodity Option [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		0		486,000,000
Derivative, Fair Value, Net		0		7,000,000
Derivative Asset, Fair Value, Gross Asset		0		7,000,000
Derivative Liability, Fair Value, Gross Liability		0		0
Put Option [Member] | Not Designated as Hedging Instrument [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		12,000,000		8,000,000
Derivative Asset, Fair Value, Gross Asset		12,000,000		8,000,000
Derivative Liability, Fair Value, Gross Liability		0		0
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		974,000,000		918,000,000
Derivative, Fair Value, Net		34,000,000		62,000,000
Derivative Asset, Fair Value, Gross Asset		34,000,000		62,000,000
Derivative Liability, Fair Value, Gross Liability		0		0
JAPAN | Three Win Related Foreign Currency Swaps [Member] | Not Designated as Hedging Instrument [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		(427,000,000)		(450,000,000)
Derivative Asset, Fair Value, Gross Asset		0		0
Derivative Liability, Fair Value, Gross Liability		(427,000,000)		(450,000,000)
UNITED STATES | GMWB Hedging Instruments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		14,442,000,000		11,139,000,000
Derivative, Fair Value, Net		174,000,000		207,000,000
UNITED STATES | GMWB Hedging Instruments [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		14,442,000,000		11,139,000,000
Derivative, Fair Value, Net		174,000,000		207,000,000
Derivative Asset, Fair Value, Gross Asset		289,000,000		331,000,000
Derivative Liability, Fair Value, Gross Liability		(115,000,000)		(124,000,000)
UNITED STATES | Macro Hedge Program [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		6,383,000,000		4,272,000,000
Derivative, Fair Value, Net		141,000,000		183,000,000
Derivative Asset, Fair Value, Gross Asset		180,000,000		224,000,000
Derivative Liability, Fair Value, Gross Liability		(39,000,000)		(41,000,000)
UNITED STATES | Macro Hedge Program [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		6,383,000,000		4,272,000,000
Derivative, Fair Value, Net		141,000,000		183,000,000
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		(93,000,000)		(100,000,000)
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		(48,000,000)		(83,000,000)
UNITED STATES | Equity Contract [Member] | GMWB Hedging Instruments [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		3,761,000,000		1,663,000,000
Derivative, Fair Value, Net		39,000,000		25,000,000
UNITED STATES | GMWB Product Derivatives [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount	[7]	17,908,000,000		15,730,000,000
Derivative, Fair Value, Net	[7]	(139,000,000)		(270,000,000)
Derivative Asset, Fair Value, Gross Asset	[7]	0		0
Derivative Liability, Fair Value, Gross Liability	[7]	(139,000,000)		(270,000,000)
UNITED STATES | GMWB Reinsurance [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Abstract]
Derivative, Notional Amount		3,659,000,000		3,233,000,000
Derivative, Fair Value, Net		56,000,000		73,000,000
Derivative Asset, Fair Value, Gross Asset		56,000,000		73,000,000
Derivative Liability, Fair Value, Gross Liability		$ 0		$ 0

[1] [1]Included in other investments on the Condensed Consolidated Balance Sheets.

[2] [2]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 September 30, 2015, and December 31, 2014, $136 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 5 for derivative liabilities.

[3] [4]Approximately $3.9 billion and $2.5 billion of investment sales receivable, as of September 30, 2015, and December 31, 2014, respectively, are excluded from this disclosure requirement because they are trade receivables in the ordinary course of business where the carrying amount approximates fair value.

[4] [5]Includes OTC and OTC-cleared derivative instruments in a net negative fair 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.

[5] [6]Represents embedded derivatives associated with non-funding agreement-backed consumer equity linked notes.

[6] The derivative instruments related to this strategy are held for other investment purposes.

[7] These derivatives are embedded within liabilities and are not held for risk management purposes.