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Environmental (Schedule of Environmental Remediation Reserves) (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
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Environmental Remediation Obligations [Abstract] |  |
Demerger obligations (Note 14) | $ 13 | $ 14
Divestiture obligations (Note 14) | 12 | 13
Active sites | 24 | 25
U.S. Superfund sites | 10 | 8
Other environmental remediation liabilities | 2 | 2
Total | $ 61 | $ 62

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