Schedule II-Condensed Financial Information Of Registrant (Balance Sheets (Parenthetical) (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fixed Maturity Securities, Available-for-sale, Allowance for Credit Loss	$ 6	$ 7
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	900,000,000	900,000,000
Common stock, shares issued	241,770,746	245,401,430
Common stock, shares outstanding	241,770,746	245,401,430
Parent Company [Member]
Available-for-sale fixed maturity securities investments, current, amortized cost	$ 512	$ 594
Fixed Maturity Securities, Available-for-sale, Allowance for Credit Loss	$ 1	$ 0
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	900,000,000	900,000,000
Common stock, shares issued	241,770,746	245,401,430
Common stock, shares outstanding	241,770,746	245,401,430