Supplemental Cash Flow Statement Disclosures (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash, Cash Equivalents and Restricted Cash
Cash and cash equivalents	$ 548	$ 563	$ 1,366
Current restricted cash (included in other current assets)	$ 10	$ 16	15
Location of current restricted cash	Other current assets	Other current assets
Total cash, cash equivalents and restricted cash	$ 558	$ 579	1,381	$ 1,806
Other Non-cash items
PP&E acquired but not yet paid	$ 392	$ 540	$ 409