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Environmental (Schedule of Environmental Remediation Reserves) (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Environmental Remediation Obligations [Abstract] |  |
Demerger obligations (Note 14) | $ 21 | $ 14
Divestiture obligations (Note 14) | 15 | 14
Active sites | 24 | 23
U.S. Superfund sites | 9 | 10
Other environmental remediation liabilities | 2 | 2
Total | $ 71 | $ 63
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] | Other liabilities, Other liabilities | Other liabilities, Other liabilities

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