Environmental (Tables)

3 Months Ended

Mar. 31, 2013

Environmental Remediation Obligations [Abstract]

Schedule of Environmental Remediation Reserves

The components of environmental remediation reserves are as follows:

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Demerger obligations (Note 17)	28	31
Divestiture obligations (Note 17)	21	21
Active sites	26	28
US Superfund sites	15	15
Other environmental remediation reserves	4	4
Total	94	99