CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Jun. 24, 2022	Jun. 23, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Fixed maturity securities, available-for-sale, amortized cost	$ 43,601	$ 35,723
Fixed maturity securities available-for-sale securities, allowance for credit losses	35	31			$ 8	$ 10
Allowance for credit losses	66	42			31	$ 39
Investments in unconsolidated affiliates	285	23
Reinsurance recoverable, allowance for doubtful accounts	$ 21	$ 10			$ 20
Common stock, par or stated value per share (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	500,000,000	500,000,000	500,000,000	1,000
Common stock, shares, outstanding (in shares)	126,332,142	126,409,904
Common stock, shares, issued (in shares)	127,234,902	126,409,904