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Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
May 31, 2024 | May 31, 2023 | May 31, 2022 | May 31, 2021
Loss Contingencies [Line Items] |  |  |  |
Tax adjustments, settlements, and unusual provisions | $ 0.0 |  |  |
Deferred tax liabilities, net | 84.9 | $ 82.6 |  |
Deferred tax assets, net | 23.1 | 21.0 |  |
Operating loss carryforwards, valuation allowance | 3.2 |  |  |
Unrecognized tax benefits | 1.8 | 2.0 | $ 3.1 | $ 12.3
Income tax penalties and interest accrued | 0.3 | 0.1 | 0.3 |
Unrecognized tax benefits that would impact effective tax rate | 1.8 | 2.0 | 3.1 |
Tax (expense) benefit from income tax penalties and interest expense | 0.1 | 0.1 | $ 2.3 |
Valuation allowance, deferred tax asset, increase (decrease), amount | 1.8 | 5.0 |  |
Sales Tax |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Tax adjustments, settlements, and unusual provisions |  | $ 1.8 |  |
State and Local Jurisdiction |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Operating loss carryforwards, valuation allowance | 5.7 |  |  |
Non-United States |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Operating loss carryforwards, valuation allowance | $ 21.2 |  |  |

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