(Schedule Of Interest Income And Interest Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure Text Block Supplement [Abstract]
Interest expense	$ 421	$ 403	$ 430
Interest income	190	78	93
Capitalized interest costs	$ 22	$ 18	$ 12