Interest Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest Expense [Abstract]
Interest expense before capitalization	$ 403	$ 339	$ 351
Capitalized interest	(16)	(15)	(11)
Interest Expense	387	324	340
Interest paid, net	$ 316	$ 315	$ 324