Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves
Balance at beginning of period	$ 9.1	$ 9.0	$ 6.3
Additions - Charged to costs and expenses	0.0	0.5	3.6
Deductions	(0.8)	(0.9)	(0.4)
Translations	0.2	0.5	(0.5)
Balance at end of period	8.5	9.1	9.0
Allowance for excess and obsolete inventory
Movement in Valuation Allowances and Reserves
Balance at beginning of period	7.1	9.1	10.0
Additions - Charged to costs and expenses	4.8	4.2	6.6
Deductions	(3.5)	(6.3)	(7.0)
Translations	0.6	0.1	(0.5)
Balance at end of period	9.0	7.1	9.1
Deferred tax assets valuation allowance
Movement in Valuation Allowances and Reserves
Balance at beginning of period	26.8	14.9	8.6
Additions - Charged to costs and expenses	38.7	10.9	7.0
Deductions	0.0	0.0	(0.1)
Translations	(0.3)	1.0	(0.6)
Balance at end of period	$ 65.2	$ 26.8	$ 14.9