Derivative Instruments (Gains (Losses) On Derivative Instruments Recorded Within Income (Loss) From Continuing Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Gains (losses)
Gains (losses)	$ 16		$ 14		$ (92)		$ (142)
Designated as Hedging Instrument [Member]
Gains (losses)
Gains (losses)	(4)		(4)		(9)		(9)
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash Flow Hedges [Member] | Interest Rate Contract [Member]
Gains (losses)
Gains (losses)	(4)	[1]	(4)	[1]	(10)	[1]	(11)	[1]
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash Flow Hedges [Member] | Foreign Exchange Contract [Member]
Gains (losses)
Gains (losses)					1	[1]	2	[1]
Designated as Hedging Instrument [Member] | Interest Expense [Member] | Fair Value Hedges [Member] | Interest Rate Contract [Member]
Gains (losses)
Gains (losses)	9	[2]	11	[2]	18	[2]	23	[2]
Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Interest Rate Contract [Member]
Gains (losses)
Gains (losses)	(488)	[3]	606	[3]	(662)	[3]	190	[3]
Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Foreign Exchange Contract [Member]
Gains (losses)
Gains (losses)	(2)	[3]			(13)	[3]	(4)	[3]
Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Equity Market Contract [Member]
Gains (losses)
Gains (losses)	(44)	[3]	275	[3]	(579)	[3]	(545)	[3]
Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Credit Risk Contract [Member]
Gains (losses)
Gains (losses)	2	[3]	(1)	[3]	3	[3]	5	[3]
Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Indexed Annuity and Universal Life Contracts [Member]
Gains (losses)
Gains (losses)	(19)	[3]	24	[3]	(149)	[3]	(80)	[3]
Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Realized Gain (Loss) [Member] | GLB Embedded Derivative Reserves [Member]
Gains (losses)
Gains (losses)	491	[3]	(862)	[3]	1,201	[3]	291	[3]
Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Reinsurance Related [Member]
Gains (losses)
Gains (losses)	68	[3]	(27)	[3]	83	[3]	(19)	[3]
Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Underwriting, acquisition, insurance and other expenses [Member] | Equity Market Contract [Member]
Gains (losses)
Gains (losses)	$ 3	[4]	$ (8)	[4]	$ 15	[4]	$ 6	[4]

[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).