Derivative Instruments (Gains (Losses) On Derivative Instruments Recorded Within Income (Loss) From Continuing Operations) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Gains (losses)
Gains (losses)		$ (259)	$ 75	$ (640)	$ (368)
Designated as Hedging Instrument [Member] | Cash flow hedges
Gains (losses)
Gains (losses)		2	3	9	6
Designated as Hedging Instrument [Member] | Fair value hedges
Gains (losses)
Gains (losses)		(31)	61	(85)	(169)
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash flow hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[1]	3	3	4	4
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash flow hedges | Foreign currency contracts [Member]
Gains (losses)
Gains (losses)	[1]	1	1	3	3
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Fair value hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[1]	(7)	(7)	(15)	(15)
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Cash flow hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[2]	(2)	(1)	(2)	(1)
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Fair value hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[2]	8	8	16	16
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Cash flow hedges | Foreign currency contracts [Member]
Gains (losses)
Gains (losses)	[3]			4
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Fair value hedges | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[3]	(32)	60	(86)	(170)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Interest rate contracts [Member]
Gains (losses)
Gains (losses)	[3]	614	(673)	1,590	(231)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Foreign currency contracts [Member]
Gains (losses)
Gains (losses)	[3]	(7)	(4)	(3)	(6)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Equity market contracts [Member]
Gains (losses)
Gains (losses)	[3]	(252)	(53)	(582)	(283)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Credit contracts [Member]
Gains (losses)
Gains (losses)	[3]	(4)	1	(7)	1
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Embedded derivatives - GLB reserves [Member]
Gains (losses)
Gains (losses)	[3]	(542)	704	(1,505)	326
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Embedded derivatives - Reinsurance related [Member]
Gains (losses)
Gains (losses)	[3]	(23)	45	(47)	30
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Realized Gain (Loss) [Member] | Indexed annuity and IUL contracts embedded derivatives [Member]
Gains (losses)
Gains (losses)	[3]	(19)	$ (9)	(12)	(47)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments | Commissions and other expenses [Member] | Equity market contracts [Member]
Gains (losses)
Gains (losses)	[4]	$ 3		$ 2	$ 5

[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).