Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 100	$ 32	$ 190	$ 84
Other comprehensive income (loss), before tax:
Other comprehensive income (loss), after tax	(196)	(1,388)	198	(2,860)
Comprehensive income (loss)	(96)	(1,356)	388	(2,776)
OCI, Liability for Future Policy Benefit, Gain (Loss), before Reclassification Adjustment and Tax	5	15	11	31
Change in unrealized gains (losses) on available-for-sale securities	(252)	(1,772)	240	(3,651)
Other Comprehensive Income (Loss), before Tax	(247)	(1,757)	251	(3,620)
Other Comprehensive Income (Loss), Tax	(51)	(369)	53	(760)
Other Comprehensive Income (Loss), Net of Tax	(196)	(1,388)	198	(2,860)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ (96)		$ 388	$ (2,776)
Other comprehensive income (loss), before tax		(1,757)
Income tax expense (benefit) related to items of other comprehensive income (loss)		$ (369)