Restructuring Activities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring and Repositioning Expenses [Abstract]
Employee severance and related benefits	$ 0.2	$ 1.3	$ 0.3	$ 5.7
Other restructuring and repositioning expenses	0.4	0.2	0.6	0.4
Total	0.6	1.5	0.9	6.1
Changes in accrued severance [Roll Forward]
Beginning balance	2.9	6.9	4.0	5.0
Additions	0.2	1.3	0.3	5.7
Payments	(0.1)	(2.6)	(1.4)	(5.2)
Effect of exchange rate changes	(0.2)	0.2	(0.1)	0.3
Ending balance	$ 2.8	$ 5.8	$ 2.8	5.8
CIS [Member]
Restructuring and Repositioning Expenses [Abstract]
Employee severance and related benefits				$ 3.0