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Consolidated Balance Sheet (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Statement of Financial Position [Abstract]
Fixed maturities, available for sale, amortized cost	$ 11,549	$ 11,101
Fixed maturities, available for sale, allowance for expected credit losses	$ 26	$ 21
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)	83,086,295	83,422,202
Common Stock, shares issued (shares)	83,086,295

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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