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Lines of Credit and Financing Arrangements (Short Term Facility) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Short-term Debt [Line Items]    
Short-term debt $ 0.9 $ 52.4
Foreign Line of Credit [Member]    
Short-term Debt [Line Items]    
Short-term debt 0.9 2.4
Proceeds from Short-term Debt 30.4 28.4
Repayments of Short-term Debt $ 31.9 $ 30.8