Derivative Instruments (Change In Our Unrealized Gain On Derivative Instruments In Accumulated OCI) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in our unrealized gain on derivative instruments in accumulated OCI
Balance as of beginning-of-year		$ 3,096
Federal income tax expense (benefit)		276	$ 483	$ 387
Balance as of end-of-period		845	3,096
Parent Company [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Balance as of beginning-of-year		3,096
Federal income tax expense (benefit)		(66)	(77)	(73)
Balance as of end-of-period		845	3,096
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	163
Unrealized holding gains (losses) arising during the period		(241)	(250)	143
Change in foreign currency exchange rate adjustment		48	50	(19)
Change in DAC, VOBA, DSI and DFEL		2	2	5
Income tax benefit (expense)		66	69	(45)
Reclassification adjustment for gains (losses) included in net income (loss)		(183)	(19)	(15)
Associated amortization of DAC, VOBA, DSI and DFEL		1	1	1
Federal income tax expense (benefit)		64	6	5
Balance as of end-of-period		132	139	256
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash flow hedges | Interest rate contracts [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Unrealized holding gains (losses) arising during the period		(258)	(286)	167
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash flow hedges | Interest rate contracts [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]	(190)	(22)	(21)
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash flow hedges | Interest rate contracts [Member] | Interest and Debt Expense [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Reclassification adjustment for gains (losses) included in net income (loss)	[2]	1	3	3
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash flow hedges | Foreign currency contracts [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Unrealized holding gains (losses) arising during the period		17	$ 36	(24)
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash flow hedges | Foreign currency contracts [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]	$ 6		$ 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).