Property, Plant and Equipment (Details) - USD ($) $ in Millions		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Property, Plant and Equipment [Abstract]
Property, plant and equipment		$ 1,278.2	$ 943.4
Less: accumulated depreciation		(962.8)	(673.5)
Net property, plant and equipment	[1]	315.4	269.9
Depreciation expense		46.4	60.1	$ 68.2
Gain (loss) from disposition of property, plant and equipment		0.1	(0.7)	$ (0.6)
Land [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment		16.8	16.4
Buildings and Improvements [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment		$ 264.6	203.5
Buildings and Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives		10 years
Buildings and Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives		40 years
Machinery and Equipment [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment		$ 869.4	623.2
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives		3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives		15 years
Office Equipment [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment		$ 96.2	81.3
Office Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives		3 years
Office Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives		10 years
Construction in Progress [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment		$ 31.2	$ 19.0

[1] As of March 31, 2021, the Company had written-down the carrying value of held for sale property, plant and equipment within the liquid-cooled automotive business to zero.  During fiscal 2022, the business no longer met the requirements to be classified as held for sale.  As a result, the Company remeasured its long-lived assets to the lower of carrying value or fair value and recorded net impairment reversals totaling $56.0 million during fiscal 2022.  The assets within the liquid-cooled automotive business are located in Hungary, Germany, China, the U.S., Italy, and the Netherlands.  See Note 2 for additional information.