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Environmental (Schedule of Environmental Remediation Reserves) (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Environmental Remediation Obligations [Abstract] |  |
Demerger obligations (Note 13) | $ 15 | $ 14
Divestiture obligations (Note 13) | 13 | 14
Active sites | 23 | 23
U.S. Superfund sites | 10 | 10
Other environmental remediation liabilities | 2 | 2
Total | $ 63 | $ 63

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