Derivative Instruments (Gains (Losses) On Derivative Instruments Recorded Within Income (Loss) From Continuing Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Gains (losses)
Gains (losses)	$ (110)		$ 50
Cash Flow Hedges [Member]
Gains (losses)
Gains (losses)	(4)		(5)
Net Investment Income [Member] | Cash Flow Hedges [Member] | Interest Rate Contract [Member]
Gains (losses)
Gains (losses)	(6)	[1]	(7)	[1]
Net Investment Income [Member] | Cash Flow Hedges [Member] | Foreign Exchange Contract [Member]
Gains (losses)
Gains (losses)	2	[1]	2	[1]
Interest Expense [Member] | Fair Value Hedges [Member] | Interest Rate Contract [Member]
Gains (losses)
Gains (losses)	9	[2]	12	[2]
Realized Gain (Loss) [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Interest Rate Contract [Member]
Gains (losses)
Gains (losses)	(178)	[3]	(416)	[3]
Realized Gain (Loss) [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Foreign Exchange Contract [Member]
Gains (losses)
Gains (losses)	(10)	[3]	(4)	[3]
Realized Gain (Loss) [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Equity Market Contract [Member]
Gains (losses)
Gains (losses)	(534)	[3]	(815)	[3]
Realized Gain (Loss) [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Credit Risk Contract [Member]
Gains (losses)
Gains (losses)	(1)	[3]	(3)	[3]
Realized Gain (Loss) [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Indexed Annuity Contracts Embedded Derivatives [Member]
Gains (losses)
Gains (losses)	(130)	[3]	104	[3]
Realized Gain (Loss) [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | GLB Embedded Derivative Reserves [Member]
Gains (losses)
Gains (losses)	710	[3]	1,153	[3]
Realized Gain (Loss) [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Reinsurance Related [Member]
Gains (losses)
Gains (losses)	16	[3]	10	[3]
Underwriting, acquisition, insurance and other expenses [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member] | Equity Market Contract [Member]
Gains (losses)
Gains (losses)	$ 12	[4]	$ 14	[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).