Investments (Other Invested Assets And Leveraged Leases - Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Leveraged leases by performance status as a percentage of leveraged leases	100.00%	100.00%
Leveraged leases, net of allowance for credit losses	$ 60	$ 47
Leveraged leases, allowance for credit losses	$ 0	$ 13
Minimum
Derivative [Line Items]
Percentage of other invested assets comprised of freestanding derivatives with positive estimated fair values	75.00%
Leveraged leased, term (in years)	0 years
Maximum
Derivative [Line Items]
Leveraged leases, allowance for credit losses	$ 1
Leveraged leased, term (in years)	8 years