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Environmental (Schedule of Environmental Remediation Reserves) (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Environmental Remediation Obligations [Abstract]    
Demerger obligations (Note 14) $ 20 $ 24
Divestiture obligations (Note 14) 13 14
Active sites 11 8
U.S. Superfund sites 11 12
Other environmental remediation liabilities 2 2
Total $ 57 $ 60