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Inventories
3 Months Ended
Mar. 31, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories
 
As of
March 31,
2015
 
As of
December 31,
2014
 
(In $ millions)
Finished goods
551

 
579

Work-in-process
46

 
53

Raw materials and supplies
147

 
150

Total
744

 
782