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Commitments and Contingencies (Details) $ in Millions	3 Months Ended
Commitments and Contingencies (Details) $ in Millions	Mar. 31, 2025 USD ($) site	Dec. 31, 2024 USD ($)	Dec. 31, 2022 USD ($)
Contingencies
Landfills near properties guaranteeing market value \| site	18
Aggregate increase potential liability	$ 9
Sites EPA notified we are a PRP \| site	74
Owned sites EPA notified we are a PRP \| site	14
Non-owned sites EPA notified we are a PRP \| site	60
Environmental remediation liabilities	$ 219
Environmental matters threshold requiring disclosure under SEC Item 103	$ 1
Workforce covered by collective bargaining (as a percent)	20.00%
Tax Year 2017 [Member]
Contingencies
Income tax deposit paid			$ 103
Southern District of New York and EPA [Member]
Contingencies
Litigation accrual		$ 10
San Jacinto Waste Pits [Member]
Contingencies
Revisions in estimate		13
Environmental remediation liabilities	$ 97	$ 97