Fair Value Measurements Level 4 Fair Value by Hierarchy (Details) - USD ($)		3 Months Ended				6 Months Ended
		Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2016		Jun. 30, 2015		Mar. 31, 2016	Dec. 31, 2015		Mar. 31, 2015	Dec. 31, 2014
Fair Value Measurement [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Separate Account Assets		$ 114,607,000,000				$ 114,607,000,000					$ 118,163,000,000
Assets accounted for at fair value on a recurring basis
Alternative Investments, Fair Value Disclosure		5,000,000				5,000,000
Fair Value Measurement [Domain] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Separate Account Assets		73,805,000,000				73,805,000,000					78,099,000,000
Assets accounted for at fair value on a recurring basis
Alternative Investments, Fair Value Disclosure		0				0
Fair Value Measurement [Domain] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Separate Account Assets		39,605,000,000				39,605,000,000					38,700,000,000
Assets accounted for at fair value on a recurring basis
Alternative Investments, Fair Value Disclosure		0				0
Fair Value Measurement [Domain] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Separate Account Assets		171,000,000				171,000,000					140,000,000
Assets accounted for at fair value on a recurring basis
Alternative Investments, Fair Value Disclosure		0				0
Separate Account Assets		117,851,000,000				117,851,000,000					120,111,000,000
Available-for-sale Securities, Debt Securities		25,700,000,000				25,700,000,000					24,657,000,000
Marketable Securities, Fixed Maturities		123,000,000				123,000,000					165,000,000
Trading Securities, Equity		11,000,000				11,000,000					11,000,000
Available-for-sale Securities, Equity Securities		136,000,000				136,000,000					459,000,000
Other Short-term Investments		874,000,000				874,000,000					572,000,000
Alternative Investments, Fair Value Disclosure		1,084,000,000				1,084,000,000					1,216,000,000
Reinsurance Recoverables		20,545,000,000				20,545,000,000					20,499,000,000
Assets, Fair Value Disclosure		141,864,000,000				141,864,000,000					144,439,000,000
Liabilities accounted for at fair value on a recurring basis
Total liabilities accounted for at fair value on a recurring basis		(945,000,000)				(945,000,000)
Cash collateral liability		17,000,000				17,000,000					3,000,000
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount				$ 0				$ 0			0
Separate Accounts [Member]
Liabilities accounted for at fair value on a recurring basis
Fair Value Investments Entities that Calculate NAV Per Share		1,000,000,000				1,000,000,000					1,200,000,000
Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(440,000,000)				(440,000,000)
Derivative Financial Instruments, Assets [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		270,000,000				270,000,000					250,000,000	[1]
Credit derivative [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		12,000,000				12,000,000					7,000,000
Credit derivative [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(21,000,000)				(21,000,000)
Equity Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		28,000,000				28,000,000
Foreign Exchange Contract [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		1,000,000				1,000,000					4,000,000
Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(281,000,000)				(281,000,000)
Interest Rate Contract [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		123,000,000				123,000,000					54,000,000
Interest Rate Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(447,000,000)				(447,000,000)
Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(505,000,000)				(505,000,000)					(653,000,000)	[2],[3]
ABS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		1,019,000,000				1,019,000,000					846,000,000
Collateralized Debt Obligations [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities	[4]	1,269,000,000				1,269,000,000					1,408,000,000
CMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		2,146,000,000				2,146,000,000					1,964,000,000
Corporate [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		15,594,000,000				15,594,000,000					15,175,000,000
Foreign Government Debt Securities [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		296,000,000				296,000,000					331,000,000
Municipal [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		1,282,000,000				1,282,000,000					1,132,000,000
RMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		1,732,000,000				1,732,000,000					1,503,000,000
U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount		42,000,000		0		42,000,000		0			166,000,000			$ 0
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		2,362,000,000				2,362,000,000					2,298,000,000
Level 1 [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		299,000,000				299,000,000					123,000,000
Marketable Securities, Fixed Maturities		0				0					1,000,000
Trading Securities, Equity		11,000,000				11,000,000					11,000,000
Available-for-sale Securities, Equity Securities		52,000,000				52,000,000					396,000,000
Other Short-term Investments		258,000,000				258,000,000					131,000,000
Assets, Fair Value Disclosure		74,425,000,000				74,425,000,000					78,761,000,000
Liabilities accounted for at fair value on a recurring basis
Total liabilities accounted for at fair value on a recurring basis		0				0
Level 1 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Level 1 [Member] | Credit derivative [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
Level 1 [Member] | Credit derivative [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Level 1 [Member] | Equity Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Level 1 [Member] | Foreign Exchange Contract [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
Level 1 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Level 1 [Member] | Interest Rate Contract [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
Level 1 [Member] | Interest Rate Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Level 1 [Member] | Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0	[3]
Level 1 [Member] | ABS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		0				0					0
Level 1 [Member] | Collateralized Debt Obligations [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		0				0					0
Level 1 [Member] | CMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		0				0					0
Level 1 [Member] | Corporate [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		0				0					0
Level 1 [Member] | Foreign Government Debt Securities [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		0				0					0
Level 1 [Member] | Municipal [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		0				0					0
Level 1 [Member] | RMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		0				0					0
Level 1 [Member] | U.S. Treasuries [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		299,000,000				299,000,000					123,000,000
Level 2 [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		23,615,000,000				23,615,000,000					22,909,000,000
Marketable Securities, Fixed Maturities		123,000,000				123,000,000					162,000,000
Trading Securities, Equity		0				0					0
Available-for-sale Securities, Equity Securities		42,000,000				42,000,000					25,000,000
Other Short-term Investments		616,000,000				616,000,000					441,000,000
Assets, Fair Value Disclosure		64,167,000,000				64,167,000,000					62,408,000,000
Liabilities accounted for at fair value on a recurring basis
Total liabilities accounted for at fair value on a recurring basis		(642,000,000)				(642,000,000)
Level 2 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Level 2 [Member] | Derivative Financial Instruments, Assets [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		134,000,000				134,000,000					92,000,000
Level 2 [Member] | Credit derivative [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		12,000,000				12,000,000					7,000,000
Level 2 [Member] | Credit derivative [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(21,000,000)				(21,000,000)
Level 2 [Member] | Equity Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		27,000,000				27,000,000
Level 2 [Member] | Foreign Exchange Contract [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		1,000,000				1,000,000					4,000,000
Level 2 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(281,000,000)				(281,000,000)
Level 2 [Member] | Interest Rate Contract [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		123,000,000				123,000,000					54,000,000
Level 2 [Member] | Interest Rate Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(413,000,000)				(413,000,000)
Level 2 [Member] | Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(642,000,000)				(642,000,000)					(748,000,000)	[3]
Level 2 [Member] | ABS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		1,012,000,000				1,012,000,000					841,000,000
Level 2 [Member] | Collateralized Debt Obligations [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		1,003,000,000				1,003,000,000					1,078,000,000
Level 2 [Member] | CMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		2,131,000,000				2,131,000,000					1,902,000,000
Level 2 [Member] | Corporate [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		14,877,000,000				14,877,000,000					14,641,000,000
Level 2 [Member] | Foreign Government Debt Securities [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		278,000,000				278,000,000					314,000,000
Level 2 [Member] | Municipal [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		1,209,000,000				1,209,000,000					1,083,000,000
Level 2 [Member] | RMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		1,042,000,000				1,042,000,000					875,000,000
Level 2 [Member] | U.S. Treasuries [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		2,063,000,000				2,063,000,000					2,175,000,000
Level 3 [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		1,786,000,000				1,786,000,000					1,625,000,000
Marketable Securities, Fixed Maturities		0				0					2,000,000
Trading Securities, Equity		0				0					0
Available-for-sale Securities, Equity Securities		42,000,000				42,000,000					38,000,000
Other Short-term Investments		0				0					0
Assets, Fair Value Disclosure		2,241,000,000				2,241,000,000					2,046,000,000
Liabilities accounted for at fair value on a recurring basis
Total liabilities accounted for at fair value on a recurring basis		(303,000,000)				(303,000,000)
Level 3 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(440,000,000)				(440,000,000)
Level 3 [Member] | Derivative Financial Instruments, Assets [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		136,000,000				136,000,000					158,000,000
Level 3 [Member] | Credit derivative [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
Level 3 [Member] | Credit derivative [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Level 3 [Member] | Equity Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		1,000,000				1,000,000
Level 3 [Member] | Foreign Exchange Contract [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
Level 3 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Level 3 [Member] | Interest Rate Contract [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
Level 3 [Member] | Interest Rate Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(34,000,000)				(34,000,000)
Level 3 [Member] | Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		137,000,000				137,000,000					95,000,000	[3]
Level 3 [Member] | ABS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		7,000,000				7,000,000					5,000,000
Level 3 [Member] | Collateralized Debt Obligations [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		266,000,000				266,000,000					330,000,000
Level 3 [Member] | CMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		15,000,000				15,000,000					62,000,000
Level 3 [Member] | Corporate [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		717,000,000				717,000,000					534,000,000
Level 3 [Member] | Foreign Government Debt Securities [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		18,000,000				18,000,000					17,000,000
Level 3 [Member] | Municipal [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		73,000,000				73,000,000					49,000,000
Level 3 [Member] | RMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		690,000,000				690,000,000					628,000,000
Level 3 [Member] | U.S. Treasuries [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		0				0					0
Fair Value, Measurements, Recurring [Member]
Liabilities accounted for at fair value on a recurring basis
Total liabilities accounted for at fair value on a recurring basis											(941,000,000)
Fair Value, Measurements, Recurring [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(288,000,000)
Fair Value, Measurements, Recurring [Member] | Credit derivative [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(7,000,000)
Fair Value, Measurements, Recurring [Member] | Equity Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											41,000,000
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(376,000,000)
Fair Value, Measurements, Recurring [Member] | Interest Rate Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(431,000,000)
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Liabilities accounted for at fair value on a recurring basis
Total liabilities accounted for at fair value on a recurring basis											0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Credit derivative [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Equity Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Interest Rate Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Liabilities accounted for at fair value on a recurring basis
Total liabilities accounted for at fair value on a recurring basis											(748,000,000)
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Credit derivative [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(7,000,000)
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Equity Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											41,000,000
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(376,000,000)
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Interest Rate Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(402,000,000)
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Liabilities accounted for at fair value on a recurring basis
Total liabilities accounted for at fair value on a recurring basis											(193,000,000)
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(288,000,000)
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Credit derivative [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Equity Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Interest Rate Contract [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(29,000,000)
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | CMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		14,000,000				14,000,000					61,000,000
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | RMBS [Member]
Assets accounted for at fair value on a recurring basis
Available-for-sale Securities, Debt Securities		690,000,000				690,000,000					628,000,000
U.S. [Member] | Guaranteed Minimum Withdrawal Benefit [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(412,000,000)				(412,000,000)
U.S. [Member] | Level 1 [Member] | Guaranteed Minimum Withdrawal Benefit [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
U.S. [Member] | Level 2 [Member] | Guaranteed Minimum Withdrawal Benefit [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
U.S. [Member] | Level 3 [Member] | Guaranteed Minimum Withdrawal Benefit [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(412,000,000)				(412,000,000)
U.S. [Member] | Fair Value, Measurements, Recurring [Member] | Guaranteed Minimum Withdrawal Benefit [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(262,000,000)
U.S. [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Guaranteed Minimum Withdrawal Benefit [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
U.S. [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Guaranteed Minimum Withdrawal Benefit [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
U.S. [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Guaranteed Minimum Withdrawal Benefit [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(262,000,000)
US GMWB Hedging Instruments [Member] | U.S. [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		85,000,000				85,000,000					111,000,000
US GMWB Hedging Instruments [Member] | U.S. [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		118,000,000				118,000,000					47,000,000
US GMWB Hedging Instruments [Member] | U.S. [Member] | Level 1 [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
US GMWB Hedging Instruments [Member] | U.S. [Member] | Level 1 [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
US GMWB Hedging Instruments [Member] | U.S. [Member] | Level 2 [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(2,000,000)				(2,000,000)					27,000,000
US GMWB Hedging Instruments [Member] | U.S. [Member] | Level 2 [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		40,000,000				40,000,000					(4,000,000)
US GMWB Hedging Instruments [Member] | U.S. [Member] | Level 3 [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		87,000,000				87,000,000					84,000,000
US GMWB Hedging Instruments [Member] | U.S. [Member] | Level 3 [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		78,000,000				78,000,000					51,000,000
Macro Hedge Program [Member] | U.S. [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		49,000,000				49,000,000					74,000,000
Macro Hedge Program [Member] | U.S. [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		98,000,000				98,000,000					73,000,000
Macro Hedge Program [Member] | U.S. [Member] | Level 1 [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
Macro Hedge Program [Member] | U.S. [Member] | Level 1 [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
Macro Hedge Program [Member] | U.S. [Member] | Level 2 [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0					0
Macro Hedge Program [Member] | U.S. [Member] | Level 2 [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		6,000,000				6,000,000					0
Macro Hedge Program [Member] | U.S. [Member] | Level 3 [Member] | Other Investments [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		49,000,000				49,000,000					74,000,000
Macro Hedge Program [Member] | U.S. [Member] | Level 3 [Member] | Other Liabilities [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		92,000,000				92,000,000					73,000,000
GMWB Reinsurance [Member]
Assets accounted for at fair value on a recurring basis
Reinsurance Recoverables		106,000,000				106,000,000					83,000,000
GMWB Reinsurance [Member] | Level 1 [Member]
Assets accounted for at fair value on a recurring basis
Reinsurance Recoverables		0				0					0
GMWB Reinsurance [Member] | Level 2 [Member]
Assets accounted for at fair value on a recurring basis
Reinsurance Recoverables		0				0					0
GMWB Reinsurance [Member] | Level 3 [Member]
Assets accounted for at fair value on a recurring basis
Reinsurance Recoverables		106,000,000				106,000,000					83,000,000
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member]
Assets accounted for at fair value on a recurring basis
Reinsurance Recoverables		32,000,000				32,000,000					79,000,000
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] | Level 1 [Member]
Assets accounted for at fair value on a recurring basis
Reinsurance Recoverables		0				0					0
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] | Level 2 [Member]
Assets accounted for at fair value on a recurring basis
Reinsurance Recoverables		32,000,000				32,000,000					79,000,000
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] | Level 3 [Member]
Assets accounted for at fair value on a recurring basis
Reinsurance Recoverables		0				0					0
Equity linked notes [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(28,000,000)				(28,000,000)
Equity linked notes [Member] | Level 1 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Equity linked notes [Member] | Level 2 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		0				0
Equity linked notes [Member] | Level 3 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net		(28,000,000)				(28,000,000)
Equity linked notes [Member] | Fair Value, Measurements, Recurring [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(26,000,000)
Equity linked notes [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Equity linked notes [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											0
Equity linked notes [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other policyholder funds and benefits payable [Member]
Liabilities accounted for at fair value on a recurring basis
Derivative Assets (Liabilities), at Fair Value, Net											(26,000,000)
Portion at Other than Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Separate Account Assets		3,200,000,000				3,200,000,000					1,800,000,000
Derivative [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs		273,000,000	[5]	267,000,000		273,000,000	[5]	267,000,000			253,000,000	[5]	$ 315,000,000
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings	[6],[7],[9]			61,000,000	[8]	(8,000,000)	[5]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases				(2,000,000)		8,000,000	[5]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements				1,000,000		2,000,000	[5]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3	[10]			(10,000,000)		(6,000,000)	[5]
Derivative [Member] | Level 3 [Member] | Credit derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs				0				0					(6,000,000)	(3,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings	[6],[7],[9]			2,000,000	[8]			(1,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases				(2,000,000)				(8,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements	[5]							0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Sales	[5]			0				0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3	[10]			(10,000,000)				(10,000,000)
Derivative [Member] | Level 3 [Member] | Equity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs		1,000,000		3,000,000		1,000,000		3,000,000		$ 3,000,000	0		5,000,000	5,000,000
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings	[6],[7],[9]	2,000,000		2,000,000	[8]	7,000,000		(8,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases						8,000,000
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements	[5]							10,000,000
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Sales	[5]			0				0
Derivative [Member] | Level 3 [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs		(34,000,000)		(28,000,000)		(34,000,000)		(28,000,000)		(32,000,000)	(29,000,000)		(30,000,000)	(27,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings	[6],[7],[9]	2,000,000		(3,000,000)	[8]	5,000,000
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements				1,000,000				1,000,000	[5]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Sales	[5]			0				0
Derivative [Member] | US GMWB Hedging Instruments [Member] | U.S. [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs		165,000,000		125,000,000		165,000,000		125,000,000		$ 144,000,000	$ 135,000,000		$ 159,000,000	$ 170,000,000
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings	[6],[7],[9]	(15,000,000)		34,000,000	[8]	(24,000,000)		25,000,000
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements	[5]							20,000,000
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Sales	[5]			$ 0				$ 0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3	[10]	$ (6,000,000)				$ (6,000,000)
Hedge Funds [Member] | Separate Accounts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Redemption Restriction, Percentage		35.00%				35.00%					28.00%
Private Equity Funds [Member] | Separate Accounts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Redemption Restriction, Percentage		9.00%				9.00%					4.00%

[1] [1]Included in other invested assets in the Company's Condensed Consolidated Balance Sheets.

[2] Included in other liabilities in the Company's Condensed Consolidated Balance Sheets and amount presented is limited to the net derivative payable associated with each counterparty.

[3] 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.

[4] Gross unrealized gains (losses) exclude the fair value of bifurcated embedded derivatives within certain securities. Subsequent changes in value are recorded in net realized capital gains (losses).

[5] [5]Derivative instruments are reported in this table on a net basis for asset/(liability) positions and reported in the Condensed Consolidated Balance Sheet in other investments and other liabilities.

[6] 2]All amounts in these rows are reported in net realized capital gains (losses). The realized/unrealized gains (losses) included in net income for separate account assets are offset by an equal amount for separate account liabilities, which results in a net zero impact on net income for the Company. All amounts are before income taxes and amortization of DAC.

[7] [1]The Company classifies realized and unrealized gains and losses on GMWB reinsurance derivatives and GMWB embedded derivatives as unrealized gains (losses) for purposes of disclosure in this table because it is impracticable to track on a contract-by-contract basis the realized gains (losses) for these derivatives and embedded derivatives.

[8] [3]All amounts are before income taxes and amortization of DAC.

[9] [6]Includes both market and non-market impacts in deriving realized and unrealized gains (losses).

[10] [4]Transfers in and/or (out) of Level 3 are primarily attributable to the availability of market observable information and the re-evaluation of the observability of pricing inputs.