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Restructuring and Other Infrequent Expenses (Details)
$ in Millions
 12 Months Ended 24 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2015
USD ($)
employees
Restructuring Cost and Reserve [Line Items]        
Reduction to workforce | employees       2,100
Restructuring and other infrequent expenses $ 22.3 $ 46.4 $ 0.0  
Payments for restructuring 29.5 19.0    
Restructuring reserve 16.9 25.4   $ 16.9
Foreign currency translation impacts to be paid in 2016 $ 1.3      
Employee Severance        
Restructuring Cost and Reserve [Line Items]        
Restructuring and other infrequent expenses   $ 44.4