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Debt And Related Expenses (Schedule of Net Financing Cost Components) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Interest based on debt outstanding	$ 388	$ 259	$ 260
Early retirement of debt	(30)
Interest income	(2)	(12)	(33)
Other	(27)	23	23
Total net financing costs	$ 329	$ 270	$ 250

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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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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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