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Derivatives (Details 2) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]      
Revenues $ 262.5 $ 272.8  
Interest Income (4.2) (5.0)  
Sales Revenue, Net [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Revenues 0.3 0.3  
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net 0.0 0.0  
Interest Income [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Interest Income 0.0 0.0  
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net 0.0 0.0  
Foreign Currency Gain (Loss) [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Foreign Currency Transaction Gain (Loss), Realized 0.0 $ 0.0  
Gain (Loss) on Foreign Currency Cash Flow Hedge Ineffectiveness $ 0.0   $ 0.0