Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May 31, 2026 |
May 31, 2025 |
May 31, 2024 |
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| Income Tax Disclosure [Abstract] | |||
| Beginning Balance | $ 0.0 | $ 0.2 | $ 1.2 |
| Gross increases related to tax positions taken in prior years | 2.3 | 0.0 | 0.0 |
| Gross decreases related to tax positions taken in prior years | 0.0 | 0.0 | (1.0) |
| Gross increases related to tax positions taken in current year | 0.3 | 0.0 | 0.0 |
| Reductions due to lapse of applicable statutes of limitations | 0.0 | (0.2) | 0.0 |
| Ending Balance | $ 2.6 | $ 0.0 | $ 0.2 |
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- References No definition available.
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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