Interest Cost Components (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Amount charged to interest expense, net	$ 259	$ 317	$ 338
Loss on debt redemption	146	64	0
Amount capitalized	8	11	33
Total	$ 413	$ 392	$ 371