Valuation and Qualifying Accounts (Details) - Allowances for Doubtful Accounts [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Balance at the beginning of period	$ 2.8	$ 2.7	$ 3.8
Additions charged to costs and expenses	1.6	0.8	0.1
Deductions	(1.0)	(0.9)	(1.1)
Currency translation	(0.1)	0.2	(0.1)
Balance at the end of period	$ 3.3	$ 2.8	$ 2.7