Restructuring Activities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Other [Abstract]
Asset impairment charges	$ 0.4	$ 1.3	$ 0.4	$ 1.3
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits	0.2	8.6	0.3	9.2
Other restructuring and repositioning expenses	0.3	0.8	0.4	2.3
Total	0.5	9.4	0.7	11.5
Changes in accrued severance [Roll Forward]
Beginning balance	3.4	3.0	11.0	6.5
Additions	0.2	8.6	0.3	9.2
Payments	(0.9)	(0.6)	(8.1)	(5.1)
Effect of exchange rate changes	(0.1)	0.2	(0.6)	0.6
Ending balance	2.6	11.2	$ 2.6	$ 11.2
CIS [Member]
Other [Abstract]
Restructuring expense		8.2
Asset impairment charges	$ 0.4	$ 1.3