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Equity Incentive Program - Share Based Compensation Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Document Fiscal Year Focus 2016    
Tax benefit $ 0.0 $ 0.0 $ (3.0)
Total stock-based compensation expense, net of tax 21.5 15.2 5.6
Pre-tax compensation expense 21.5 15.2 8.6
Selling and Administrative Expenses      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Pre-tax compensation expense 15.3 12.0 7.5
Cost of Sales      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Pre-tax compensation expense 1.5 1.2 0.8
Research and Development Expense      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Pre-tax compensation expense $ 4.7 $ 2.0 $ 0.3