Investments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Gain (Loss) on Securities [Line Items]
Mortgage loan losses due to changes in expected credit losses	$ 0	$ 5	$ 0	$ 5
Commitments to sell various privately placed debt securities	40		40
Commitments to purchase or fund privately placed debt securities	1,900		1,900
Fixed maturity securities
Gain (Loss) on Securities [Line Items]
Debt securities, available-for-sale, accrued interest, after allowance for credit loss	477	$ 451	477	$ 451	$ 470
Mortgage loans
Gain (Loss) on Securities [Line Items]
Financing receivable, accrued interest, after allowance for credit loss	$ 5		$ 5