Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Fixed maturities, amortized cost, current	$ 29,915	$ 28,226
Fixed maturities, allowance for credit loss, current	7	9
Debt Securities, Available-for-Sale, Amortized Cost, Noncurrent	809	789
Fixed maturities, allowance for credit Loss, noncurrent	$ 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	235,861,650	237,958,067
Common stock, shares outstanding	235,861,650	237,958,067