Shares And Stockholders' Equity (Components And Changes In Accumulated OCI) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Unrealized Gain (Loss) on AFS Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of beginning-of-year	$ 6,777	$ 9,611
Income tax benefit (expense)	4,281	640
Less:
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(9)	(4)
Associated amortization of DAC, VOBA, DSI, and DFEL	(10)	(18)
Income tax benefit (expense)	4	5
Balance as of end-of-period	(8,987)	7,260
Unrealized Gain (Loss) on AFS Securities [Member] | Gains (Losses) Arising During The Year [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications and taxes	(27,065)	(4,244)
Unrealized Gain (Loss) on AFS Securities [Member] | Change in Foreign Currency Exchange Rate Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications and taxes	(620)	(123)
Unrealized Gain (Loss) on AFS Securities [Member] | Change in Deferred Insurance Charges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications and taxes	7,625	1,359
Unrealized Gain (Loss) on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of beginning-of-year	(103)	(402)
Change in DAC, VOBA, DSI and DFEL	34
Income tax benefit (expense)	(201)	(76)
Less:
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	67	16
Associated amortization of DAC, VOBA, DSI, and DFEL	(3)	(1)
Income tax benefit (expense)	(13)	(3)
Balance as of end-of-period	603	(132)
Unrealized Gain (Loss) on Derivative Instruments [Member] | Gains (Losses) Arising During The Year [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications and taxes	301	229
Unrealized Gain (Loss) on Derivative Instruments [Member] | Change in Foreign Currency Exchange Rate Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications and taxes	623	129
Unrealized Gain (Loss) on Derivative Instruments [Member] | Change in Deferred Insurance Charges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications and taxes	34
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of beginning-of-year	(14)	(12)
Other comprehensive income (loss) before reclassifications and taxes	(32)	(2)
Income tax benefit (expense)	(1)
Less:
Balance as of end-of-period	(47)	(14)
Funded Status of Employee Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of beginning-of-year	(219)	(266)
Other comprehensive income (loss) before reclassifications and taxes	22	1
Less:
Balance as of end-of-period	$ (197)	$ (265)