Derivative Instruments (Gains (Losses) On Derivative Instruments Recorded Within Income (Loss) From Continuing Operations) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Gains (losses)
Gains (losses)		$ (784)	$ (540)	$ (330)
Designated as Hedging Instrument [Member] | Cash flow hedges
Gains (losses)
Gains (losses)		15	(22)	(18)
Designated as Hedging Instrument [Member] | Fair value hedges
Gains (losses)
Gains (losses)		(196)	35	36
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash flow hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[1]	8	(22)	(21)
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash flow hedges | Foreign currency contracts [Member]
Gains (losses)
Gains (losses)	[1]	6		3
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Fair value hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[1]	(30)
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Cash flow hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[2]	1
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Fair value hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[2]	32	35	36
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Fair value hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[3]	(198)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[3]	304	1,303	(989)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Foreign currency contracts [Member]
Gains (losses)
Gains (losses)	[3]	(11)	(8)	(4)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Equity market contracts [Member]
Gains (losses)
Gains (losses)	[3]	(118)	(215)	(1,306)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Credit contracts [Member]
Gains (losses)
Gains (losses)	[3]	(6)	(1)	9
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Embedded derivatives - GLB reserves [Member]
Gains (losses)
Gains (losses)	[3]	(779)	(1,391)	2,153
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Embedded derivatives - Reinsurance related [Member]
Gains (losses)
Gains (losses)	[3]	63	(42)	107
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Embedded derivatives - Indexed annuity and IUL contracts [Member]
Gains (losses)
Gains (losses)	[3]	(57)	(210)	(356)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Commissions and other expenses [Member] | Equity market contracts [Member]
Gains (losses)
Gains (losses)	[4]	$ 1	$ 11	$ 38

[1] Reported in net investment income on our Consolidated Statements of Comprehensive Income (Loss).

[2] Reported in interest and debt expense on our Consolidated Statements of Comprehensive Income (Loss).

[3] Reported in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).

[4] Reported in commissions and other expenses on our Consolidated Statements of Comprehensive Income (Loss).