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Inventories, net
9 Months Ended
Sep. 30, 2011
Inventories, net [Abstract] 
Inventories, net
2. Inventories, net
Inventories consist of (in millions):
                 
    September 30,     December 31,  
    2011     2010  
Raw materials and supplies
  $ 823     $ 661  
Work in process
    833       953  
Finished goods and purchased products
    2,251       1,774  
 
           
Total
  $ 3,907     $ 3,388