Lines of Credit and Financing Arrangements (Foreign Obligations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Short-term debt		$ 0.9	$ 52.4
Proceeds from the facilities	$ 79.0
Repayments on the facilities	$ 85.4
Foreign Obligations [Member]
Short-term Debt [Line Items]
Short-term debt		$ 0.9	$ 2.4