Environmental (Tables)

3 Months Ended

Mar. 31, 2012

Environmental Remediation Obligations [Abstract]

Schedule of Environmental Remediation Reserves

The components of environmental remediation reserves are as follows:

	As of	As of
	March 31, 2012	December 31, 2011
	(In $ millions)
Demerger obligations (Note 17)	34	34
Divestiture obligations (Note 17)	23	24
Active sites	21	20
US Superfund sites	14	14
Other environmental remediation reserves	4	4
Total	96	96