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Debt And Related Expenses (Schedule of Net Financing Cost Components) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Disclosure [Abstract]
Interest based on debt outstanding	$ 98	$ 93	$ 273	$ 282
Interest income	(19)	(11)	(46)	(43)
Other	9	(1)	13	(8)
Total net financing costs	$ 88	$ 81	$ 240	$ 231

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