Supplemental Cash Flow Statement Disclosures (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Cash, Cash Equivalents and Restricted Cash
Cash and cash equivalents	$ 480	$ 571	$ 563	$ 1,366
Current restricted cash	$ 26	$ 15	$ 16	$ 15
Location of current restricted cash	Other current assets	Other current assets	Other current assets	Other current assets
Total cash, cash equivalents and restricted cash	$ 506	$ 586	$ 579	$ 1,381
Other Non-cash items
PP&E acquired but not yet paid	$ 565	$ 565	$ 540	$ 409

Future cash outflow to pay for purchases of fixed assets that have occurred.

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