Other Current Assets
 6 Months Ended
Jun. 30, 2012
Other Current Assets [Abstract]  
Other Current Assets

5. Other Current Assets

Other current assets consisted of:

 

                 
(in $ millions)   June 30,
2012		     December 31,
2011		  
     

Development advances

     67       63  

Sales and use tax receivables

     54       49  

Restricted cash of subsidiaries

     37       16  

Prepaid expenses

     19       15  

Assets held for sale

     16       16  

Derivative assets

     8       2  

Other

     7       7  
   

 

 

    

 

 

  
      208       168  
   

 

 

    

 

 

  

Assets held for sale consisted of land and buildings expected to be sold within the next twelve months.