Investments (Schedule Of Average Carrying Value Of Impaired Mortgage Loans On Real Estate) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Commercial [Member]
Information about impaired mortgage loans on real estate
Average carrying value for impaired mortgage loans on real estate	$ 34	$ 13	$ 25	$ 16

Average carrying value for impaired loans on real estate.

No definition available.

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Balance Type:	debit
Period Type:	duration