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Asset Retirement Obligations and Accrued Environmental Costs - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024
Site Contingency [Line Items] |  |
Accrued environmental costs | $ 220 | $ 206
Maximum number of years accrued environmental liabilities will be paid over | 30 years |
Expected expenditures for acquired environmental obligations, weighted-average discount factor rate | 5.00% |
Total environmental accrual included in balance sheet | $ 119 |
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] | Asset Retirement Obligations and Accrued Environmental Cost Non Current |
Accrued environmental costs discounted | $ 133 |
Cleanup Remediation Activities |  |
Site Contingency [Line Items] |  |
Accrued environmental costs | 142 | 139
Corporate and Other Environmental Liabilities |  |
Site Contingency [Line Items] |  |
Accrued environmental costs | 68 | 56
Federal Comprehensive Environmental Response Compensation and Liability Act or Similar State Laws |  |
Site Contingency [Line Items] |  |
Accrued environmental costs | $ 10 | $ 11

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