Other Current Assets (Tables)

9 Months Ended

Sep. 30, 2012

Other Current Assets [Abstract]

Summary of other current assets

(in $ millions)	September 30, 2012		December 31, 2011
Restricted cash of subsidiaries		121		16
Development advances		63		63
Sales and use tax receivables		57		49
Prepaid expenses		23		15
Assets held for sale		16		16
Derivative assets		6		2
Other		10		7
		296		168