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Inventories (Details) (USD $)
In Millions
Sep. 30, 2011
Dec. 31, 2010
Inventories (at FIFO, which approximates replacement value):  
Raw materials$ 112.7$ 94.5
Work in process133.1112.6
Finished goods383.4337.8
Subtotal (at FIFO)629.2544.9
Reduction of certain inventories to LIFO basis(53.3)(49.1)
Total575.9495.8
Inventories (Textual) [Abstract]  
U.S. inventories determined by LIFO method$ 130$ 102