Segment and Geographic Information, Property, Plant and Equipment by Geographical Area (Details) - USD ($) $ in Millions	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information, Additional Information [Abstract]
Total property, plant and equipment	$ 484.7	$ 504.3
Reportable Geographical Components [Member] | United States [Member]
Segment Reporting Information, Additional Information [Abstract]
Total property, plant and equipment	117.7	121.5
Reportable Geographical Components [Member] | China [Member]
Segment Reporting Information, Additional Information [Abstract]
Total property, plant and equipment	57.6	49.6
Reportable Geographical Components [Member] | Mexico [Member]
Segment Reporting Information, Additional Information [Abstract]
Total property, plant and equipment	56.3	49.4
Reportable Geographical Components [Member] | Hungary [Member]
Segment Reporting Information, Additional Information [Abstract]
Total property, plant and equipment	55.3	59.3
Reportable Geographical Components [Member] | Italy [Member]
Segment Reporting Information, Additional Information [Abstract]
Total property, plant and equipment	52.4	62.0
Reportable Geographical Components [Member] | Austria [Member]
Segment Reporting Information, Additional Information [Abstract]
Total property, plant and equipment	36.9	42.8
Reportable Geographical Components [Member] | Germany [Member]
Segment Reporting Information, Additional Information [Abstract]
Total property, plant and equipment	32.8	37.2
Reportable Geographical Components [Member] | Other [Member]
Segment Reporting Information, Additional Information [Abstract]
Total property, plant and equipment	$ 75.7	$ 82.5