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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Income Taxes [Abstract] |  |  |  |
Effective income tax rate | (336.40%) | (144.90%) | 66.00% | (41.30%)
Net of valuation allowance, classification [Abstract] |  |  |  |
Income tax expense (benefit) related to US Tax Reform |  |  | $ 10.8 |
Foreign Tax Jurisdiction [Member] |  |  |  |
Net of valuation allowance, classification [Abstract] |  |  |  |
Income tax expense (benefit) related to US Tax Reform |  |  | 13.6 |
Valuation allowance - deferred tax assets | $ 37.6 |  | 37.6 |
Domestic Tax Jurisdiction [Member] |  |  |  |
Net of valuation allowance, classification [Abstract] |  |  |  |
Valuation allowance - deferred tax assets | $ 7.4 |  | $ 7.4 |

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