Investments (Schedule Of Average Carrying Value Of Impaired Mortgage Loans On Real Estate) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Information about impaired mortgage loans on real estate
Average carrying value for impaired mortgage loans on real estate	$ 24	$ 15	$ 21	$ 18