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Commitments and Contingencies (Details) $ in Millions	3 Months Ended		6 Months Ended
Commitments and Contingencies (Details) $ in Millions	Dec. 31, 2024 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2025 USD ($) site
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			$ 217
Environmental matters threshold requiring disclosure under SEC Item 103			$ 1
Workforce covered by collective bargaining (as a percent)			20.00%
Revolving Credit Facility [Member]
Contingencies
Credit Facility, aggregate capacity			$ 3,500
Tax Year 2017 [Member]
Contingencies
Income tax deposit paid		$ 103
San Jacinto Waste Pits [Member]
Contingencies
Revisions in estimate	$ 13
Environmental remediation liabilities	$ 97		$ 96