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Inventories (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Inventories (at FIFO, which approximates replacement value):    
Raw materials $ 154.3 $ 94.5
Work in process 122.8 112.6
Finished goods 574.3 337.8
Subtotal (at FIFO) 851.4 544.9
Reduction of certain inventories to LIFO basis (53.3) (49.1)
Total 798.1 495.8
Inventories (Textual) [Abstract]    
U.S. inventories determined by LIFO method $ 121 $ 102