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Goodwill and Other Intangible Assets - Intangible Assets and Amortization Expense (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount $ 294.8   $ 294.8
Accumulated amortization 235.4   229.8
Intangible assets, net 91.4   97.0
Amortization expense 5.6 $ 4.3  
Trademarks      
Finite-Lived Intangible Assets [Line Items]      
Unamortized intangible assets, gross carrying amount 32.0   32.0
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 15.6   14.5
Customer Relationships      
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount 156.1   156.1
Accumulated amortization 146.5   143.4
Unpatented Technologies      
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount 92.4   92.4
Accumulated amortization 70.0   68.6
Other (1)      
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount 3.1   3.1
Accumulated amortization $ 3.1   $ 3.1