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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, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Debt Disclosure [Abstract]
Interest based on debt outstanding	$ 92	$ 93	$ 277	$ 296
Early retirement of debt	0	0	0	(30)
Interest income	(19)	(1)	(22)	(2)
Other	(6)	(6)	(19)	(21)
Total net financing costs	$ 67	$ 86	$ 236	$ 243

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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