Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 150	$ 160
Other Comprehensive Income (Loss), before Tax [Abstract]
OCI, Liability for Future Policy Benefit, Gain (Loss), before Reclassification Adjustment and Tax	4	9
Change in unrealized gains (losses) on available-for-sale securities	253	(97)
Other Comprehensive Income (Loss), before Tax	257	(88)
Other Comprehensive Income (Loss), Tax	54	(18)
Other Comprehensive Income (Loss), Net of Tax	203	(70)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	$ 353	$ 90