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Goodwill and Other Intangible Assets - Intangible Assets and Amortization Expense (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount $ 294.7 $ 294.8  
Accumulated Amortization 249.3 229.8  
Intangible Assets, Net 77.4 97.0  
Selling and Administrative Expenses      
Finite-Lived Intangible Assets [Line Items]      
Amortization Expense 19.6 19.6 $ 17.2
Trademarks      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 0.3 0.3  
Accumulated Amortization 0.2 0.2  
Patents      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 42.9 42.9  
Accumulated Amortization 19.3 14.5  
Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 156.2 156.1  
Accumulated Amortization 152.8 143.4  
Unpatented technologies      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 92.2 92.4  
Accumulated Amortization 73.9 68.6  
Other      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 3.1 3.1  
Accumulated Amortization $ 3.1 $ 3.1