Restructuring (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2019	Sep. 30, 2018
Restructuring
Costs incurred	$ 1.3	$ 2.7
Restructuring reserve
Costs incurred	1.3	2.7
2018 Actions | Europe
Restructuring
Pre-tax program to date restructuring and other charges incurred			$ 6.7
Total expected restructuring costs			6.7	$ 5.0
Restructuring reserve	3.5	3.5	$ 3.5
Costs incurred	1.3	2.7
Restructuring reserve
Costs incurred	1.3	2.7
Payments for restructuring		3.2
Balance at the end of the period	$ 3.5	$ 3.5