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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Income Taxes [Abstract] |  |  |  |
Effective income tax rate | 63.00% | 32.00% | 65.40% | (13.20%)
Net of valuation allowance, classification [Abstract] |  |  |  |
Income tax expense related to legal entity restructuring | $ 2.7 |  |  |
Income tax expense (benefit) related to US Tax Reform |  | $ 3.1 |  | $ (7.7)
Deferred tax asset, income tax expense (benefit) |  | $ (2.5) |  | $ (17.0)
Foreign Tax Jurisdiction [Member] |  |  |  |
Net of valuation allowance, classification [Abstract] |  |  |  |
Valuation allowance - deferred tax assets | 27.8 |  | $ 27.8 |
Domestic Tax Jurisdiction [Member] |  |  |  |
Net of valuation allowance, classification [Abstract] |  |  |  |
Changes in deferred tax asset valuation allowances | 3.0 |  |  |
Valuation allowance - deferred tax assets | $ 10.3 |  | $ 10.3 |

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