Restructuring Activities (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits	$ 0.1	$ 0.5
Other restructuring and repositioning expenses	0.1	1.2
Total	0.2	1.7
Changes in accrued severance [Roll Forward]
Beginning balance	11.0	6.5
Additions	0.1	0.5
Payments	(5.8)	(3.3)
Effect of exchange rate changes	(0.5)	0.3
Ending balance	$ 4.8	$ 4.0