Derivative Instruments (Change In Unrealized Gain On Derivative Instruments In Accumulated OCI) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Change in our unrealized gain on derivative instruments in accumulated OCI
Balance as of beginning-of-year	$ (8,033)	$ (3,893)	$ 1,553	$ 6,544	$ 6,944	$ 7,561	$ 5,840		$ 6,544
Income tax benefit (expense)	14	488	(86)	(82)	(176)	(65)	(83)	$ (97)	332	$ (420)	$ 56
Balance as of end-of-year	(7,073)	$ (8,033)	$ (3,893)	1,553	6,544	$ 6,944	$ 7,561	5,840	(7,073)	6,544
Unrealized Gain (Loss) on Derivative Instruments [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Balance as of beginning-of-year				$ 240				$ 42	240	42	181
Change in foreign currency exchange rate adjustment									312	152	(174)
Change in DAC, VOBA, DSI and DFEL									(29)	7	(23)
Income tax benefit (expense)									(28)	(65)	26
Associated amortization of DAC, VOBA, DSI and DFEL									(62)	(2)	(7)
Income tax benefit (expense)									(9)	(10)	(12)
Balance as of end-of-year	$ 309				$ 240				309	240	42
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | Interest Rate Contracts [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Unrealized holding gains (losses) arising during the period									(336)	11	(16)
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | 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)									2	3	2
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | Foreign Currency Contracts [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Unrealized holding gains (losses) arising during the period									182	130	93
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | 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)									62	48	56
Unrealized Gain (Loss) on Derivative Instruments [Member] | Cash Flow Hedges [Member] | Foreign Currency Contracts [Member] | Realized Gain (Loss) [Member]
Change in our unrealized gain on derivative instruments in accumulated OCI
Reclassification adjustment for gains (losses) included in net income (loss)									$ 39	$ (2)	$ 6