Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Fixed maturies, available for sale, amortized cost	$ 10,687	$ 10,752
Fixed maturities, available for sale, allowance for expected credit losses	$ 34	$ 12
Common Stock, par value (USD per share)	$ 0	$ 0
Common Stock, shares authorized	200,000,000	200,000,000
Common Stock, shares outstanding	83,978,258	83,635,807