Segment and Geographic Information, Net Sales by Geographical Area (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Segment and Geographic Information [Abstract]
Net sales	$ 1,808.4	$ 1,975.5	$ 2,212.7
Reportable Geographical Components [Member] | United States [Member]
Segment and Geographic Information [Abstract]
Net sales	765.7	941.9	1,032.3
Reportable Geographical Components [Member] | China [Member]
Segment and Geographic Information [Abstract]
Net sales	217.6	168.5	172.1
Reportable Geographical Components [Member] | Italy [Member]
Segment and Geographic Information [Abstract]
Net sales	188.6	187.4	217.3
Reportable Geographical Components [Member] | Hungary [Member]
Segment and Geographic Information [Abstract]
Net sales	153.7	142.4	165.6
Reportable Geographical Components [Member] | United Kingdom [Member]
Segment and Geographic Information [Abstract]
Net sales	96.4	82.0	86.6
Reportable Geographical Components [Member] | Germany [Member]
Segment and Geographic Information [Abstract]
Net sales	83.4	97.5	123.1
Reportable Geographical Components [Member] | Austria [Member]
Segment and Geographic Information [Abstract]
Net sales	59.6	93.0	116.2
Reportable Geographical Components [Member] | Other [Member]
Segment and Geographic Information [Abstract]
Net sales	$ 243.4	$ 262.8	$ 299.5