(Schedule Of Interest Income And Interest Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure Text Block Supplement [Abstract]
Interest expense	$ 403	$ 430	$ 597
Interest income	78	93	151
Capitalized interest costs	$ 18	$ 12	$ 31