Supplemental Cash Flow Statement Disclosures (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Cash, Cash Equivalents and Restricted Cash
Cash and cash equivalents	$ 572	$ 437	$ 548	$ 563
Current restricted cash (included in other current assets)	$ 22	$ 9	$ 10	$ 16
Location of current restricted cash	Other current assets	Other current assets	Other current assets	Other current assets
Total cash, cash equivalents and restricted cash	$ 594	$ 446	$ 558	$ 579
Other Non-cash items
PP&E acquired but not yet paid	$ 321	$ 528	$ 392	$ 540

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

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