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Environmental (Tables)
 9 Months Ended
Sep. 30, 2026
Environmental Remediation Obligations [Abstract]  
Schedule of Environmental Remediation Reserves
The components of environmental remediation liabilities, included in current and noncurrent Other liabilities, are as follows:
As of
September 30,
2026		As of
December 31,
2025
(In $ millions)
Demerger obligations (Note 14)
13 24 
Divestiture obligations (Note 14)
20 15 
Active sites22 23 
U.S. Superfund sites9 9 
Other environmental remediation liabilities2 2 
Total66 73