Debt and Other Obligations (Components of Interest Expense and Amortization of Deferred Financing Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt and Other Obligations [Abstract]
Interest Expense, Debt, Excluding Amortization	$ 161	$ 157	$ 322	$ 324
Amortization of deferred financing costs and adjustments on long-term debt	7	7	13	13
Capitalized interest	(3)	(3)	(6)	(7)
Interest expense and amortization of deferred financing costs	$ 165	$ 161	$ 329	$ 330