Environmental (Tables)

6 Months Ended

Jun. 30, 2018

Environmental Remediation Obligations [Abstract]

Schedule of Environmental Remediation Reserves

The components of environmental remediation reserves are as follows:

	As of June 30, 2018	As of December 31, 2017
	(In $ millions)
Demerger obligations (Note 18)	26	28
Divestiture obligations (Note 18)	17	17
Active sites	15	15
US Superfund sites	11	11
Other environmental remediation reserves	2	2
Total	71	73