Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 90	$ 52
Other comprehensive income (loss), before tax:
Unrealized gains (losses) on securities	507	(1,879)
Other comprehensive income (loss), after tax	394	(1,472)
Comprehensive income (loss)	484	(1,420)
OCI, Liability for Future Policy Benefit, Gain (Loss), before Reclassification Adjustment and Tax	6	16
Change in unrealized gains (losses) on available-for-sale securities	492	(1,879)
Other Comprehensive Income (Loss), before Tax	498	(1,863)
Other Comprehensive Income (Loss), Tax	104	(391)
Other Comprehensive Income (Loss), Net of Tax	394	(1,472)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 484	$ (1,420)