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Income Taxes - Narrative (Details) kr in Millions, $ in Millions, ₩ in Billions			1 Months Ended		3 Months Ended								9 Months Ended		12 Months Ended
	Apr. 28, 2021 USD ($)	Apr. 28, 2021 DKK (kr)	Mar. 31, 2022 USD ($)	Mar. 31, 2022 KRW (₩)	Sep. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2022 KRW (₩)	Sep. 30, 2021 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2018 KRW (₩)	Mar. 31, 2017 USD ($)	Mar. 31, 2017 KRW (₩)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 KRW (₩)
Income Taxes [Line Items]
Discrete income tax benefit					$ 1.5								$ 13.3	$ (4.5)
Reversal of valuation allowance					3.1								9.4
Effective income tax rate reconciliation, expense from other adjustments, amount					1.5			$ (1.1)					3.4
Uncertain tax position benefit													(7.3)
Benefit related to sale of business														(1.6)
Discrete income tax benefit					$ (1.5)								$ (13.3)	4.5
Effective Income Tax Rate Reconciliation, Tax Settlement, Foreign, Amount														$ 1.2
Danish Tax Authority | 2015 Tax Year | Foreign Tax Authority
Income Taxes [Line Items]
Estimated tax	$ 12.7	kr 96.1
Danish Tax Authority | 2016 Tax Year | Foreign Tax Authority
Income Taxes [Line Items]
Estimated tax	17.6	133.8
Danish Tax Authority | 2017 Tax Year | Foreign Tax Authority
Income Taxes [Line Items]
Estimated tax	$ 20.5	kr 155.5
Tax Authority, South Korea (SRTO) | Foreign Tax Authority | Assessment
Income Taxes [Line Items]
Pre-assessment notice, amount									$ 23.8	₩ 34.3	$ 23.8	₩ 34.3
Tax Authority, South Korea (SRTO) | Tax Year 2011 To 2014 | Foreign Tax Authority | Assessment
Income Taxes [Line Items]
Pre-assessment notice, amount			$ 1.4	₩ 2.0		$ 7.4	₩ 10.6								$ 7.8	₩ 11.3

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Estimated amount of loss resulting from an adverse tax position.

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The amount of estimated penalties recognized in the period arising from income tax examinations.

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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 increase (decrease) in the valuation allowance for deferred tax assets.

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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 the disposition of a business not qualifying as a discontinued operation.

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