Lines of Credit and Financing Arrangements (Foreign Obligations) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Short-term Debt [Line Items]
Short-term debt	$ 0.0		$ 0.9
Foreign Obligations [Member]
Short-term Debt [Line Items]
Short-term debt	0.0		$ 0.9
Proceeds on facilities	40.2	$ 19.1
Repayments on facilities	$ 38.5	$ 20.5