Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Fixed maturities, amortized cost, current	$ 28,226	$ 25,641
Fixed maturities, allowance for credit loss, current	9	6
Fixed maturities, amortized cost, noncurrent	789	616
Fixed maturities, allowance for credit loss, noncurrent	$ 0	$ 0
Preferred stock, shares authorized	100,000,000
Preferred stock, shares issued	0
Preferred stock, shares outstanding	0
Common stock, par value	$ 0.01
Common stock, shares authorized	900,000,000
Common stock, shares issued	237,958,067	241,770,746
Common stock, shares outstanding	237,958,067	241,770,746