Debt and Other Obligations (Components of Interest Expense and Amortization of Deferred Financing Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Debt and Other Obligations [Abstract]
Interest Expense, Debt, Excluding Amortization	$ 160	$ 167
Amortization of deferred financing costs and adjustments on long-term debt	7	6
Capitalized interest	(3)	(3)
Interest expense and amortization of deferred financing costs	$ 164	$ 170