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Inventories
6 Months Ended
Jun. 30, 2011
Inventories [Abstract]  
Inventories
5. Inventories
                 
    As of     As of  
    June 30,     December 31,  
    2011   2010
    (In $ millions)  
Finished goods
    588       442  
Work-in-process
    34       31  
Raw materials and supplies
    157       137  
 
       
Total
    779       610