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Inventories
6 Months Ended
Jun. 30, 2013
Inventory Disclosure [Abstract]  
Inventories
Inventories
 
As of
June 30,
2013
 
As of
December 31,
2012
 
(In $ millions)
Finished goods
551

 
514

Work-in-process
51

 
42

Raw materials and supplies
136

 
155

Total
738

 
711