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Restructuring Expenses (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
employees
Jun. 30, 2015
USD ($)
Restructuring Cost and Reserve [Line Items]          
Restructuring and related cost, headcount reduction | employees       300  
Restructuring Reserve [Roll Forward]          
Restructuring reserve, beginning of period $ 16.0 $ 16.9   $ 16.9  
Restructuring expenses 2.1 1.9 $ 4.0 4.0 $ 14.6
Restructuring cash activity (3.2) (3.4)      
Foreign currency translation (0.3) 0.6      
Restructuring reserve, end of period 14.6 16.0   14.6  
Employee Severance [Member]          
Restructuring Reserve [Roll Forward]          
Restructuring reserve, beginning of period 16.0 16.9   16.9  
Restructuring expenses 1.3 1.9      
Restructuring cash activity (3.2) (3.4)      
Foreign currency translation (0.3) 0.6      
Restructuring reserve, end of period 13.8 16.0   13.8  
Facility Closing Costs [Member]          
Restructuring Reserve [Roll Forward]          
Restructuring reserve, beginning of period 0.0 0.0   0.0  
Restructuring expenses 0.8 0.0      
Restructuring cash activity 0.0 0.0      
Foreign currency translation 0.0 0.0      
Restructuring reserve, end of period $ 0.8 $ 0.0   $ 0.8