Supplemental Cash Flow Statement Disclosures (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Cash, Cash Equivalents and Restricted Cash
Cash and cash equivalents	$ 1,440	$ 1,335	$ 695	$ 548
Current restricted cash (included in other current assets)	$ 4	$ 14	15	10
Location of current restricted cash	Other current assets	Other current assets
Total cash, cash equivalents and restricted cash	$ 1,444	$ 1,349	710	558
Other Non-cash items
Noncash capital expenditures	$ 101	$ 207	$ 204	$ 392

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

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