Fair Value Measurements Level 4 Significant Unobservable Inputs (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Alternative Investments, Fair Value Disclosure		$ 2,874		$ 2,942
Available-for-sale Securities, Debt Securities		59,196		59,384
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		3,313		3,475
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs		505	[1]	578		$ 737
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings	[2],[3],[4]	12		13
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)	[5]	(5)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases		394		339
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements		(19)		3
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Sales		(265)		201
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3	[1]	12		37
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3	[1]	(202)		344
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	[2],[6]	11		8
Limited Partnerships and Other Alternative Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs		74	[1]	189		$ 108
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings	[2],[3],[4]	(19)		1
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases		55		130
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements		0		0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Sales		20		24
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3	[1]			53
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3	[1]	131		79
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	[2],[6]	$ (19)		$ 1
Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Valuation Techniques		Discounted cash flows		Discounted cash flows
Residential Mortgage Backed Securities [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Loss Severity		0.00%		0.00%
Fair Value Inputs, Probability of Default		1.00%		1.00%
Fair Value Inputs, Prepayment Rate		0.00%		0.00%
Fair Value Inputs, Counterparty Credit Risk		30.00%		23.00%
Residential Mortgage Backed Securities [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Loss Severity		0.00%		100.00%
Fair Value Inputs, Probability of Default		10.00%		14.00%
Fair Value Inputs, Prepayment Rate		20.00%		7.00%
Fair Value Inputs, Counterparty Credit Risk		1696.00%		1904.00%
Residential Mortgage Backed Securities [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Loss Severity		0.00%		0.00%
Fair Value Inputs, Probability of Default		6.00%		7.00%
Fair Value Inputs, Prepayment Rate		2.00%		2.00%
Fair Value Inputs, Counterparty Credit Risk		178.00%	[7]	142.00%	[8]
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Valuation Techniques		Discounted cash flows		Discounted cash flows
Fair Value Measurements, Significant Assumptions		Spread		Spread
Fair Value Measurements, Sensitivity Analysis, Description	[8]	Decrease		Decrease
US States and Political Subdivisions Debt Securities [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Treasury Yield		193.00%		212.00%
US States and Political Subdivisions Debt Securities [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Treasury Yield		193.00%		212.00%
US States and Political Subdivisions Debt Securities [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Treasury Yield		193.00%	[7]	212.00%	[8]
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Valuation Techniques		Discounted cash flows		Discounted cash flows
Fair Value Measurements, Significant Assumptions		Spread		Spread
Fair Value Measurements, Sensitivity Analysis, Description	[8]	Decrease		Decrease
Corporate Debt Securities [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Counterparty Credit Risk		63.00%		123.00%
Corporate Debt Securities [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Counterparty Credit Risk		800.00%		765.00%
Corporate Debt Securities [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Counterparty Credit Risk		306.00%	[7]	279.00%	[8]
Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Valuation Techniques		Discounted cash flows		Discounted cash flows
Fair Value Measurements, Significant Assumptions		Spread (encompasses prepayment, default risk and loss severity)		Spread (encompasses prepayment, default risk and loss severity)
Fair Value Measurements, Sensitivity Analysis, Description	[8]	Decrease		Decrease
Commercial Mortgage Backed Securities [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Counterparty Credit Risk		31.00%		46.00%
Commercial Mortgage Backed Securities [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Counterparty Credit Risk		1505.00%		2475.00%
Commercial Mortgage Backed Securities [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Counterparty Credit Risk		266.00%	[7]	284.00%	[8]
Residential Mortgage Backed Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		$ 4,046		$ 3,918
Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		1,622		1,281
US States and Political Subdivisions Debt Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		12,121		12,871
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		49		66
Corporate Debt Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		26,802		27,359
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		854		1,040
Commercial Mortgage Backed Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		4,717		4,415
Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		$ 150		284
Fair Value, Measurements, Recurring [Member] | Limited Partnerships and Other Alternative Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Valuation Processes, Description		The predominant valuation method uses a NAV calculated on a monthly basis and represents funds where the Company does not have the ability to redeem the investment in the near-term at that NAV, including an assessment of the investee's liquidity.
Fair Value, Measurements, Recurring [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		$ 1,622		1,281
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Non-Broker Priced [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities	[9]	31		32
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Non-Broker Priced [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities	[9]	339		568
Fair Value, Measurements, Recurring [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Available-for-sale Securities, Debt Securities		$ 122		$ 284
Spread [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Significant Assumptions		Spread		Spread
Fair Value Measurements, Sensitivity Analysis, Description	[8]	Decrease		Decrease
Prepayment Rate [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Significant Assumptions		Constant prepayment rate		Constant prepayment rate
Fair Value Measurements, Sensitivity Analysis, Description	[8],[10]	Decrease [4]		Decrease [4]
Probability of Default [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Significant Assumptions		Constant default rate		Constant default rate
Fair Value Measurements, Sensitivity Analysis, Description	[8]	Decrease		Decrease
Loss Severity [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Significant Assumptions		Loss severity		Loss severity
Fair Value Measurements, Sensitivity Analysis, Description	[8]	Decrease		Decrease
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Withdrawal Utilization [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Sensitivity Analysis, Description	[11]	Increase
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Withdrawal Utilization [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[12]	20.00%
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Withdrawal Utilization [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[12]	100.00%
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Withdrawal Rates [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Sensitivity Analysis, Description	[11]	Increase
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Withdrawal Rates [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[13]	0.00%
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Withdrawal Rates [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[13]	8.00%
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Lapse Rates [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Sensitivity Analysis, Description	[11]	Decrease
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Lapse Rates [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[14]	0.00%
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Lapse Rates [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[14]	75.00%
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Reset Elections [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Sensitivity Analysis, Description	[11]	Increase
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Reset Elections [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[15]	20.00%
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Reset Elections [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[15]	75.00%
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Equity Volatility [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Sensitivity Analysis, Description	[11]	Increase
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Equity Volatility [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[16]	10.00%
Living Benefits Required to be Fair Valued and the GMWB Reinsurance Derivative [Member] | Equity Volatility [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Input Range	[16]	40.00%
Interest Rate Contract [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net		$ (30)		$ (29)
Fair Value Measurements, Valuation Techniques		Discounted cash flows		Discounted cash flows
Fair Value Measurements, Significant Assumptions		Swap curve beyond 30 years		Swap curve beyond 30 years
Fair Value Measurements, Sensitivity Analysis, Description	[17]	Decrease		Decrease
Interest Rate Contract [Member] | Interest Rate Swap [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Unobservable Swap Curve		3.00%		3.00%
Interest Rate Contract [Member] | Interest Rate Swap [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Unobservable Swap Curve		3.00%		3.00%
US GMWB Hedging Instruments [Member] | Equity Option [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net		$ 35		$ 46
Fair Value Measurements, Valuation Techniques		Option model		Option model
Fair Value Measurements, Significant Assumptions		Equity volatility		Equity volatility
Fair Value Measurements, Sensitivity Analysis, Description	[17]	Increase		Increase
US GMWB Hedging Instruments [Member] | Equity Option [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Assumptions, Expected Volatility Rate		27.00%		22.00%
US GMWB Hedging Instruments [Member] | Equity Option [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Assumptions, Expected Volatility Rate		29.00%		34.00%
US GMWB Hedging Instruments [Member] | Other Contract [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net		$ 131		$ 124
Fair Value Measurements, Valuation Techniques		Discounted cash flows		Discounted cash flows
Fair Value Measurements, Significant Assumptions		Equity volatility		Equity volatility
Fair Value Measurements, Sensitivity Analysis, Description	[17]	Increase		Increase
US GMWB Hedging Instruments [Member] | Other Contract [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Assumptions, Expected Volatility Rate		10.00%		10.00%
US GMWB Hedging Instruments [Member] | Other Contract [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Assumptions, Expected Volatility Rate		40.00%		40.00%
US Macro Hedge Program [Member] | Equity Option [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net		$ 179		$ 141
Fair Value Measurements, Valuation Techniques		Option model		Option model
Fair Value Measurements, Significant Assumptions		Equity volatility		Equity volatility
Fair Value Measurements, Sensitivity Analysis, Description	[17]	Increase		Increase
US Macro Hedge Program [Member] | Equity Option [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Assumptions, Expected Volatility Rate		14.00%		27.00%
US Macro Hedge Program [Member] | Equity Option [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Assumptions, Expected Volatility Rate		28.00%		28.00%
Long [Member] | Interest Rate Contract [Member] | Interest Rate Swaption [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net		$ 8	[18]	$ 22
Fair Value Measurements, Valuation Techniques		Option model		Option model
Fair Value Measurements, Significant Assumptions		Interest rate volatility		Interest rate volatility
Fair Value Measurements, Sensitivity Analysis, Description	[17]	Increase		Increase
Long [Member] | Interest Rate Contract [Member] | Interest Rate Swaption [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Assumptions, Expected Volatility Rate		1.00%		1.00%
Long [Member] | Interest Rate Contract [Member] | Interest Rate Swaption [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Assumptions, Expected Volatility Rate		2.00%		1.00%
Portion at Fair Value Measurement [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Alternative Investments, Fair Value Disclosure	[19]	$ 622		$ 770
Portion at Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Alternative Investments, Fair Value Disclosure	[19]	$ 74		$ 189

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

[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.

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

[4] The Company classifies 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 reinsurance derivatives and embedded derivatives.

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

[6] [7]Amounts presented are for Level 3 only and therefore may not agree to other disclosures included herein.

[7] [1]The weighted average is determined based on the fair value of the securities.

[8] [2]Conversely, the impact of a decrease in input would have the opposite impact to the fair value as that presented in the table.

[9] [3]Level 3 CMBS, corporate and municipal securities excludes those for which the Company bases fair value on broker quotations as noted in the following discussion.

[10] [4]Decrease for above market rate coupons and increase for below market rate coupons.

[11] Conversely, the impact of a decrease in input would have the opposite impact to the fair value as that presented in the table.

[12] [2]Range represents assumed cumulative percentages of policyholders taking withdrawals.

[13] [4]Range represents assumed annual percentages of full surrender of the underlying variable annuity contracts across all policy durations for in force business.

[14] [4]Range represents assumed annual percentages of full surrender of the underlying variable annuity contracts across all policy durations for in force business.

[15] [5]Range represents assumed cumulative percentages of policyholders that would elect to reset their guaranteed benefit base.

[16] [6]Range represents implied market volatilities for equity indices based on multiple pricing sources.

[17] Conversely, the impact of a decrease in input would have the opposite impact to the fair value as that presented in the table. Changes are based on long positions, unless otherwise noted. Changes in fair value will be inversely impacted for short positions.

[18] The swaptions presented are purchased options that have the right to enter into a pay-fixed swap.

[19] Represents hedge funds where investment company accounting has been applied to a wholly-owned fund of funds measured at fair value.