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Summary of Properties and Equipment (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Abstract]    
Land $ 0.3 $ 0.3
Buildings and improvements 27.0 23.7
Machinery and equipment 158.2 148.4
Total property and equipment, at cost 185.5 172.4
Less: Accumulated depreciation (121.7) (113.1)
Properties and equipment, net $ 63.8 $ 59.3