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Stock Compensation Plans (Schedule of Employee Service Share-based Compensation, Allocation of Recognized Costs) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock compensation expense $ 10.8 $ 6.2 $ 22.8 $ 11.7
Cost of goods sold [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock compensation expense 1.0 0.5 1.6 0.9
Selling, general and administrative expenses [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock compensation expense $ 9.8 $ 5.7 $ 21.2 $ 10.8