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Significant Accounting Policies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Significant Accounting Policies [Line Items]        
Stock split description       On June 1, 2011, the Company effected a two-for-one stock split of the Common Stock in the form of a 100% stock dividend. All applicable amounts in the consolidated financial statements, including earnings per share and related disclosures, have been retroactively adjusted to reflect the stock split.
Stock split conversion ratio       2
Stock split, rate of stock dividend       100.00%
Impact on net sales due to change in calendar periods $ 14.3      
Percentage of inventory determined using LIFO   17.00% 20.00%  
Adjustments to reflect inventory at net realizable value   10.1 5.7  
Research and development expenses   61.8 54.8 55.1
Stock compensation expense   15.5 11.0 10.0
Unvested Stock Options Fair Value
       
Significant Accounting Policies [Line Items]        
Stock compensation expense   17.0    
Selling, General And Administrative Expenses
       
Significant Accounting Policies [Line Items]        
Stock compensation expense   15.5    
Cost of Sales
       
Significant Accounting Policies [Line Items]        
Stock compensation expense   $ 1.5    
Minimum
       
Significant Accounting Policies [Line Items]        
Intangible assets, estimated useful life (years)   3 years    
Minimum | Building and Building Improvements
       
Significant Accounting Policies [Line Items]        
Property, plant and equipment, useful life   9 years    
Minimum | Machinery and Equipment
       
Significant Accounting Policies [Line Items]        
Property, plant and equipment, useful life   3 years    
Minimum | Office Equipment
       
Significant Accounting Policies [Line Items]        
Property, plant and equipment, useful life   3 years    
Maximum
       
Significant Accounting Policies [Line Items]        
Intangible assets, estimated useful life (years)   20 years    
Maximum | Software
       
Significant Accounting Policies [Line Items]        
Intangible assets, estimated useful life (years)   10 years    
Maximum | Building and Building Improvements
       
Significant Accounting Policies [Line Items]        
Property, plant and equipment, useful life   40 years    
Maximum | Machinery and Equipment
       
Significant Accounting Policies [Line Items]        
Property, plant and equipment, useful life   20 years    
Maximum | Office Equipment
       
Significant Accounting Policies [Line Items]        
Property, plant and equipment, useful life   10 years    
Armand Products Company
       
Significant Accounting Policies [Line Items]        
Ownership interest, percentage 50.00% 50.00% 50.00% 50.00%
Armakleen Company
       
Significant Accounting Policies [Line Items]        
Ownership interest, percentage 50.00% 50.00% 50.00% 50.00%
Natronx Technologies Llc Company
       
Significant Accounting Policies [Line Items]        
Ownership interest, percentage 33.33% 33.33% 33.33% 33.33%