Environmental (Tables)

9 Months Ended

Sep. 30, 2011

Environmental Remediation Obligations [Abstract]

Schedule of Environmental Remediation Reserves

The components of environmental remediation reserves are as follows:

	As of September 30, 2011	As of December 31, 2010
	(In $ millions)
Demerger obligations (Note 17)	36	36
Divestiture obligations (Note 17)	24	26
US Superfund sites	14	13
Other environmental remediation reserves	25	26
Total	99	101