Fair Value Measurements (Details 5) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Reinsurance Recoverable [Member] | Guaranteed Withdrawal Benefits [Member] | U.S. [Member]
Roll Forward of Financial Instruments (Assets) Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)
Fair value, Beginning Balance	$ 29		$ 191
Total realized/unrealized gains (losses) included in net income	(4)	[1],[2],[3]	(60)	[1],[2],[3]
Total realized/unrealized gains (losses) included in OCI		[4]		[4]
Purchases
Settlements	5		8
Sales
Transfers into Level 3		[5]		[5]
Transfers out of Level 3		[5]		[5]
Fair value, Ending Balance	30		139
Changes in unrealized gains (losses) included in net income related to financial instruments still held at end of period	(4)	[1],[6]	(60)	[1],[6]
Separate Accounts [Member]
Roll Forward of Financial Instruments (Assets) Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)
Fair value, Beginning Balance	737		583
Total realized/unrealized gains (losses) included in net income	5	[1],[2],[3]	15	[1],[2],[3]
Total realized/unrealized gains (losses) included in OCI		[4]		[4]
Purchases	130		255
Settlements	(1)
Sales	(86)		(26)
Transfers into Level 3	3	[5]		[5]
Transfers out of Level 3	(26)	[5]	(4)	[5]
Fair value, Ending Balance	762		823
Changes in unrealized gains (losses) included in net income related to financial instruments still held at end of period	5	[1],[6]	8	[1],[6]
Limited Partnerships and Other Alternative Investments [Member] | Monthly N.A.V Calulation [Member] | Fair Value, Inputs, Level 3 [Member] | Alternative Assets [Member]
Roll Forward of Financial Instruments (Assets) Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)
Fair value, Beginning Balance	108		314
Total realized/unrealized gains (losses) included in net income	3	[1],[2],[3]	7	[1],[2],[3]
Total realized/unrealized gains (losses) included in OCI		[4]		[4]
Purchases	30		60
Settlements	0		0
Sales	(24)		(21)
Transfers into Level 3		[5]		[5]
Transfers out of Level 3	(10)	[5]	(23)	[5]
Fair value, Ending Balance	107		337
Changes in unrealized gains (losses) included in net income related to financial instruments still held at end of period	$ 3	[1],[6]	$ 7	[1],[6]

[1] [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 DAC.

[2] [1]The Company classifies gains and losses on GMWB reinsurance derivatives and Guaranteed Living Benefit 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.

[3] 6]Includes both market and non-market impacts in deriving realized and unrealized gains (losses).

[4] [3]All amounts are before income taxes and amortization of DAC.

[5] [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.

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