Restructuring Activities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits	$ 0.1	$ 0.8	$ 0.6	$ 2.1
Other restructuring and repositioning expenses	0.3	1.3	1.5	2.3
Total	0.4	2.1	2.1	4.4
Changes in accrued severance [Roll Forward]
Beginning balance	4.0	12.7	6.5	14.7
Additions	0.1	0.8	0.6	2.1
Payments	(1.2)	(4.1)	(4.5)	(7.2)
Effect of exchange rate changes	0.1	(0.2)	0.4	(0.4)
Ending balance	3.0	9.2	3.0	9.2
Restructuring Cost and Reserve [Line Items]
Cash proceeds from sale of facilities			0.0	4.3
Gain on sale of assets	$ 0.0	1.2	$ 0.0	$ 1.2
Europe Segment [Member]
Restructuring Cost and Reserve [Line Items]
Cash proceeds from sale of facilities		4.3
Gain on sale of assets		$ 1.2