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Inventories, Net
9 Months Ended
Sep. 30, 2013
Inventory, Net [Abstract]  
Inventories, Net
Inventories, Net
Inventories are stated at the lower of cost or market value. The components of net inventories were as follows (in millions):
 
September 30, 2013
 
December 31, 2012
Materials and supplies
$
143.9

 
$
126.6

Work in process
129.3

 
109.3

Finished products
549.4

 
460.5

 
$
822.6

 
$
696.4