Income Taxes - Components of Pretax Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
United States	$ (139.3)	$ (143.8)	$ (33.5)
International	26.9	71.1	38.9
Income (loss) before income taxes	$ (112.4)	$ (72.7)	$ 5.4

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details