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Goodwill - Schedule of Consolidated Income Statement Included Revenue and Earnings (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Business Acquisition [Line Items]      
Net sales $ 818.8 $ 776.4 $ 774.4
Net income 77.8 66.9 47.1
Bachman Group Companies [Member]
      
Business Acquisition [Line Items]      
Net sales 9.7    
Net income 0.3    
Chemsil & Chemtec [Member]
      
Business Acquisition [Line Items]      
Net sales 11.8    
Net income $ 1.0