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Inventories, net (Tables)
3 Months Ended
Mar. 31, 2012
Inventories, net [Abstract]  
Inventories
                 
    March 31,     December 31,  
    2012     2011  

Raw materials and supplies

  $ 993     $ 907  

Work in process

    993       852  

Finished goods and purchased products

    2,542       2,271  
   

 

 

   

 

 

 

Total

  $ 4,528     $ 4,030