Restructuring Activities (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits		$ 0.5	$ 2.2	$ 6.2	$ 5.5
Other restructuring and repositioning expenses		0.4	0.4	0.8	1.2
Total		0.9	2.6	7.0	6.7
Changes in accrued severance [Roll Forward]
Beginning balance	$ 3.2	5.8	7.4	5.0	10.0
Additions		0.5	2.2	6.2	5.5
Payments		(2.5)	(5.0)	(7.7)	(10.7)
Reclassified as held for sale		(0.8)	0.0	(0.8)	0.0
Effect of exchange rate changes		0.2	0.1	0.5	(0.1)
Ending balance		$ 3.2	$ 4.7	3.2	$ 4.7
Forecast [Member]
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits	$ 1.0
CIS [Member]
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits				$ 3.1