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Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Significant Accounting Policies [Line Items]        
Proceed from sale of accounts receivable   $ 37.8    
Percentage of inventory determined using LIFO 19.00% 19.00% 20.00%  
Adjustments to reflect inventory at net realizable value $ 12.6 $ 12.6 $ 8.3  
Research and development expenses   64.7 59.8 $ 61.8
Stock compensation expense   14.8 15.2 15.5
Adjustments for New Accounting Pronouncement        
Significant Accounting Policies [Line Items]        
Decrease in current deferred income taxes 14.4      
Increase in other assets 0.9      
Decrease in the long-term deferred income tax 13.5      
Decrease in other assets 8.6      
Decrease in long-term debt $ 8.6      
Unvested Stock Options Fair Value        
Significant Accounting Policies [Line Items]        
Stock compensation expense   16.1 17.0 17.0
Selling, General and Administrative Expenses        
Significant Accounting Policies [Line Items]        
Stock compensation expense   14.5 15.4 15.5
Cost of Sales        
Significant Accounting Policies [Line Items]        
Stock compensation expense   $ 1.6 $ 1.6 $ 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]        
Percentage of ownership interest 50.00% 50.00% 50.00% 50.00%
ArmaKleen Company        
Significant Accounting Policies [Line Items]        
Percentage of ownership interest 50.00% 50.00% 50.00% 50.00%
Natronx Technologies LLC        
Significant Accounting Policies [Line Items]        
Percentage of ownership interest 33.33% 33.33% 33.33% 33.33%