Derivative Instruments (Change In Our Unrealized Gain On Derivative Instruments In Accumulated OCI) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Unrealized Gain (Loss) on Derivative Instruments [Member]	Mar. 31, 2012 Unrealized Gain (Loss) on Derivative Instruments [Member]	Mar. 31, 2013 Unrealized Gain (Loss) on Derivative Instruments [Member] Cash Flow Hedges [Member] Interest Rate Contract [Member]	Mar. 31, 2012 Unrealized Gain (Loss) on Derivative Instruments [Member] Cash Flow Hedges [Member] Interest Rate Contract [Member]	Mar. 31, 2013 Unrealized Gain (Loss) on Derivative Instruments [Member] Cash Flow Hedges [Member] Interest Rate Contract [Member] Net Investment Income [Member]		Mar. 31, 2012 Unrealized Gain (Loss) on Derivative Instruments [Member] Cash Flow Hedges [Member] Interest Rate Contract [Member] Net Investment Income [Member]		Mar. 31, 2013 Unrealized Gain (Loss) on Derivative Instruments [Member] Cash Flow Hedges [Member] Foreign Exchange Contract [Member]	Mar. 31, 2012 Unrealized Gain (Loss) on Derivative Instruments [Member] Cash Flow Hedges [Member] Foreign Exchange Contract [Member]	Mar. 31, 2013 Unrealized Gain (Loss) on Derivative Instruments [Member] Cash Flow Hedges [Member] Foreign Exchange Contract [Member] Net Investment Income [Member]		Mar. 31, 2012 Unrealized Gain (Loss) on Derivative Instruments [Member] Cash Flow Hedges [Member] Foreign Exchange Contract [Member] Net Investment Income [Member]		Mar. 31, 2013 Unrealized Gain (Loss) on Derivative Instruments [Member] Fair Value Hedges [Member] Interest Rate Contract [Member]	Mar. 31, 2012 Unrealized Gain (Loss) on Derivative Instruments [Member] Fair Value Hedges [Member] Interest Rate Contract [Member]	Mar. 31, 2013 Unrealized Gain (Loss) on Derivative Instruments [Member] Fair Value Hedges [Member] Interest Rate Contract [Member] Interest Expense [Member]		Mar. 31, 2012 Unrealized Gain (Loss) on Derivative Instruments [Member] Fair Value Hedges [Member] Interest Rate Contract [Member] Interest Expense [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Balance as of beginning-of-year	$ 3,581	$ 3,808	$ 163	$ 119
Unrealized holding gains (losses) arising during the period					34	(40)					13	(3)					1	1
Change in foreign currency exchange rate adjustment			11	(9)
Change in DAC, VOBA, DSI and DFEL			2	4
Income tax benefit (expense)			(22)	15
Less: Reclassification adjustment for gains (losses) included in net income (loss)			(2)	(3)			(5)	[1]	(6)	[1]			2	[1]	2	[1]			1	[2]	1	[2]
Less: Associated amortization of DAC, VOBA, DSI and DFEL			1
Less: Income tax benefit (expense)				1
Balance as of end-of-period	$ 3,581	$ 3,808	$ 203	$ 89

[1] The OCI offset is reported within net investment income on our Consolidated Statements of Comprehensive Income (Loss).

[2] The OCI offset is reported within interest and debt expense on our Consolidated Statements of Comprehensive Income (Loss).