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Inventories
6 Months Ended
Jun. 30, 2011
Inventories [Abstract]  
Inventories
2. Inventories:
     Components of inventories are as follows (in millions):
                 
    As of     As of  
    June 30,     December 31,  
    2011     2010  
Finished goods
  $ 318.0     $ 213.7  
Work in process
    16.9       6.5  
Raw materials and repair parts
    197.3       137.0  
 
           
 
    532.2       357.2  
Excess of current cost over last-in, first-out cost and other items
    (72.1 )     (71.0 )
 
           
Total inventories, net
  $ 460.1     $ 286.2