Consolidated Balance Sheet (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Fixed maturities, available for sale, amortized cost	$ 10,744	$ 10,193
Fixed maturities, available for sale, allowance for expected credit losses	$ 9	$ 9
Common Stock, par value (USD per share)	$ 0	$ 0
Common Stock, shares authorized (shares)	200,000,000	200,000,000
Common Stock, shares outstanding (shares)	85,140,521	84,920,965