Lines of Credit and Financing Arrangements (Asset Securitization Program) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Eligible amounts available and beneficial interests sold
Eligible amount available under the ASP on qualified accounts receivable	$ 290.0	$ 250.0
Beneficial interest sold	(276.0)	(50.0)
Remaining amount available	$ 14.0	$ 200.0