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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Mar. 31, 2021
Income Taxes [Abstract] |  |  |
Effective income tax rate | 40.40% | 2.30% |
Income Taxes [Abstract] |  |  |
Impairment charges | $ (1.8) | $ 0.0 |
U.S. [Member] |  |  |
Income Taxes [Abstract] |  |  |
Valuation allowance | 85.8 |  |
Foreign Jurisdictions [Member] |  |  |
Income Taxes [Abstract] |  |  |
Release of deferred tax asset valuation allowance | (4.8) |  |
Valuation allowance | 9.5 |  |
Liquid-Cooled Automotive Business [Member] | Held for Sale [Member] |  |  |
Income Taxes [Abstract] |  |  |
Impairment charges | $ (7.4) |  | $ 138.3

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