Restructuring (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2019	Sep. 30, 2018
Restructuring
Costs incurred	$ 1.4
Restructuring reserve
Costs incurred	1.4
2018 Actions | Europe
Restructuring
Pre-tax program to date restructuring and other charges incurred		$ 5.4
Total expected restructuring costs		6.0	$ 5.0
Restructuring reserve	3.0	$ 3.0
Costs incurred	1.4
Restructuring reserve
Costs incurred	1.4
Balance at the end of the period	$ 3.0