Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Fixed maturities, amortized cost	$ 26,536	$ 27,690
Fixed maturities, allowance for credit loss	38	17	$ 12	$ 58
Allowance for losses for commercial mortgage loans	24	26
Securities pledged, amortized costs	1,665	1,232
Allowance for credit losses on premium receivable reinsurance recoverable	16	28	32	24
Allowance for credit losses on other assets	$ 1	$ 1	$ 1	$ 0
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, aggregate liquidation preference	$ 625	$ 625
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	900,000,000	900,000,000
Common stock, shares issued	105,592,281	103,584,699
Common stock, shares outstanding	95,497,265	102,854,569	97,200,000	107,800,000
Treasury Stock, shares	10,095,016	730,130