Derivative Instruments (Change In Our Unrealized Gain On Derivative Instruments In Accumulated OCI) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Change in our unrealized gain on derivative instruments in accumulated OCI
Balance as of beginning-of-year				$ 3,096
Federal income tax expense (benefit)		$ 105	$ 139	167	$ 236
Balance as of end-of-period		1,944		1,944
Unrealized Gain (Loss) on Derivative Instruments [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Balance as of beginning-of-year				139	256
Change in foreign currency exchange rate adjustment				16	(11)
Income tax benefit (expense)				27	24
Reclassification adjustment for gains (losses) included in net income (loss)				$ (189)	(10)
Associated amortization of DAC, VOBA, DSI and DFEL					1
Federal income tax expense (benefit)				$ 66	3
Balance as of end-of-period		$ 209	$ 216	209	216
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | Interest Rate Contract [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Unrealized holding gains (losses) arising during the period				(121)	(52)
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | Interest Rate Contract [Member] | Net Investment Income [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Reclassification adjustment for gains (losses) included in net income (loss)	[1]			(194)	(12)
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Reclassification adjustment for gains (losses) included in net income (loss)	[2]			2	2
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | Foreign Currency Contract [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Unrealized holding gains (losses) arising during the period				25	$ (7)
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | Foreign Currency Contract [Member] | Net Investment Income [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Reclassification adjustment for gains (losses) included in net income (loss)	[1]			$ 3

[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).