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Income Taxes, Unrecognized Tax Benefits and Deferred Tax Asset Valuation Allowances (Details) - USD ($) $ in Millions | 12 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
Income Taxes [Abstract] |  |  |
Increase (decrease) in deferred tax asset valuation allowances | $ 22.0 | $ 9.2 |
Income tax benefit from allocation of income tax provision | (9.3) |  |
Income tax expense related to legal entity restructuring |  | 2.9 |
Lapse of statute of limitations and settlements |  | 4.5 |
Income tax benefit related to manufacturing deduction |  |  | $ (2.5)
Income tax benefit related to US Tax Reform |  |  | (7.7)
Reduction in provisional charge related to US Tax Reform |  |  | (9.3)
Transition tax liability |  |  | 18.9
Reduction in transition tax liability |  |  | (0.1)
Charge for reduction in state deferred tax assets |  |  | 1.7
Changes in deferred tax asset valuation allowance related to US Tax Reform |  |  | 4.3
Lapse of statute of limitations | (0.5) | (2.4) | (2.2)
Income Taxes [Abstract] |  |  |
Tax benefit from recognition of tax credits |  |  | (14.5)
U.S. [Member] |  |  |
Income Taxes [Abstract] |  |  |
Income tax benefit from impairment charges | $ (24.4) |  |
Increase (decrease) in deferred tax asset valuation allowances |  | 8.4 |
Term of cumulative loss position | 3 years |  |
Foreign Jurisdictions [Member] |  |  |
Income Taxes [Abstract] |  |  |
Income tax benefit from impairment charges | $ (13.3) |  |
Increase (decrease) in deferred tax asset valuation allowances |  | (1.3) | $ (1.0)
Term of cumulative loss position | 3 years |  |
Italy [Member] |  |  |
Income Taxes [Abstract] |  |  |
Tax benefit from recognition of tax credits |  | $ (1.4) |
Deferred Tax Assets for Charges Recorded [Member] |  |  |
Income Taxes [Abstract] |  |  |
Increase (decrease) in deferred tax asset valuation allowances | $ 116.5 |  |
Deferred Tax Assets for Charges Recorded [Member] | U.S. [Member] |  |  |
Income Taxes [Abstract] |  |  |
Increase (decrease) in deferred tax asset valuation allowances | 103.3 |  |
Deferred Tax Assets for Charges Recorded [Member] | Foreign Jurisdictions [Member] |  |  |
Income Taxes [Abstract] |  |  |
Increase (decrease) in deferred tax asset valuation allowances | $ 13.2 |  |

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- Definition Period of time the Company has been in a cumulative loss position for income tax purposes, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of income tax expense (benefit) attributable to allocation of the income tax provision between net earnings and other comprehensive income. + References No definition available. + Details
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- Definition Amount of income tax expense (benefit) attributable to impairment losses. + References No definition available. + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations related to legal entity restructuring. + References No definition available. + Details
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- Definition Amount of income tax expense (benefit) attributable to manufacturing deductions. + References No definition available. + Details
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- Definition Increase (decrease) in stated deferred tax assets. + References No definition available. + Details
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- Definition Amount of measurement period adjustment increase (decrease) to the transition tax liability from accounting for tax effect pursuant to Tax Cuts and Jobs Act. + References No definition available. + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations and settlements with taxing authorities. + References No definition available. + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign tax credit. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of income tax expense for remeasurement of deferred tax asset from change in tax rate pursuant to Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Amount of income tax expense (benefit) from effect of Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Amount of income tax expense (benefit) for measurement period adjustment from accounting for tax effect pursuant to Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2A -Subparagraph (SAB Topic 5.EE.Q2(f)) -URI http://asc.fasb.org/extlink&oid=116825942&loc=SL116722634-122817 + Details
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- Definition Amount of tax liability from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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