Environmental (Tables)

6 Months Ended

Jun. 30, 2011

Environmental [Abstract]

Schedule of Environmental Remediation Reserves

Environmental remediation reserves recorded in the unaudited consolidated balance sheets are categorized as follows:

	As of		As of
	June 30,		December 31,
	2011		2010
	(In $ millions)
Demerger obligations (Note 17)		37		36
Divestiture obligations (Note 17)		25		26
US Superfund sites		14		13
Other environmental remediation reserves		27		26
Total		103		101