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Other Financial Data - Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Liabilities [Abstract]
Defined benefit plans	$ 768	$ 939
Non-current contract liabilities	496	424	$ 363
Unrecognized tax benefits	39	26
Deferred income taxes	87	55
Environmental Reserve	119	119
Deferred compensation	89	70
Other	121	108
Other liabilities	$ 1,719	$ 1,741

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Deferred Compensation, Noncurrent

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Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer.

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