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Plant, Property and Equipment, Net - Components of Plant, Property and Equipment, Net (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment [Line Items]    
Land and improvements $ 18.0 $ 17.2
Buildings and improvements 184.6 160.6
Machinery and equipment 785.4 732.8
Furniture, fixtures and office equipment 69.9 61.4
Construction work in progress 43.7 46.4
Other 9.0 8.2
Plant, property and equipment, gross 1,110.6 1,026.6
Less - accumulated depreciation (737.5) (705.2)
Plant, property and equipment, net $ 373.1 $ 321.4