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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
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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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