Lines of Credit and Financing Arrangements (Foreign Obligations) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Short-term Debt [Line Items]
Short-term debt	$ 3.8		$ 0.9
Foreign Obligations [Member]
Short-term Debt [Line Items]
Short-term debt	3.8		$ 0.9
Proceeds on facilities	21.3	$ 0.8
Repayments on facilities	$ 15.6	$ 1.8