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Inventories and Reduction of Certain Inventories to LIFO Basis (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Inventories [Line Items]    
Raw materials $ 155.0 $ 150.8
Work in process 147.0 121.0
Finished goods 614.2 559.0
Subtotal (at FIFO) 916.2 830.8
Reduction of certain inventories to LIFO basis (55.2) (53.3)
Total $ 861.0 $ 777.5