Income Taxes, Tax Years Subject to Examination, Tax Credits and Tax Carryforwards (Details) $ in Millions	12 Months Ended
	Mar. 31, 2020 USD ($)
Operating Loss Carryforwards [Line Items]
Unrecognized foreign withholding taxes and deferred tax liabilities	$ 7.0
Federal and State [Member]
Income Taxes [Abstract]
Tax credit carryforward	$ 61.6
Federal and State [Member] | Minimum [Member]
Income Taxes [Abstract]
Tax credit carryforward, expiration date	Mar. 31, 2021
Federal and State [Member] | Maximum [Member]
Income Taxes [Abstract]
Tax credit carryforward, expiration date	Mar. 31, 2040
Germany [Member]
Income Taxes [Abstract]
Tax years subject to examination	Fiscal 2011 - Fiscal 2019
Italy [Member]
Income Taxes [Abstract]
Tax years subject to examination	Calendar 2015 - Fiscal 2019
United States [Member]
Income Taxes [Abstract]
Tax years subject to examination	Fiscal 2017 - Fiscal 2019
Foreign Tax Jurisdictions [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	$ 314.7
Tax losses subject to expiration	8.1
Tax losses not subject to expiration	$ 306.6
Foreign Tax Jurisdictions [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards, expiration date	Mar. 31, 2021
Foreign Tax Jurisdictions [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards, expiration date	Mar. 31, 2034
State and Local [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	$ 149.8
State and Local [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards, expiration date	Mar. 31, 2021
State and Local [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards, expiration date	Mar. 31, 2040