Investments (Loan Valuation Allowance for Mortgage Loans) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Allowance For Loan And Lease Losses Roll Forward
Balance, Beginning of Period	$ 89	$ 77	$ 93	$ 67
Provision (release)	0	(8)	0	(8)
Balance, End of Period	107	75	107	75
Allowance For Loan and Lease Losses Provision Of Credit Losses	$ 18	$ 6	$ 14	$ 16