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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	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