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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Nov. 30, 2022 | Nov. 30, 2021 | Nov. 30, 2022 | Nov. 30, 2021 | May 31, 2022
Income Tax Disclosure [Abstract] |  |  |  |  |
Unrecognized tax benefits | $ 26.0 |  | $ 26.0 |  | $ 30.8
Effective tax rate | 22.10% | 18.00% | 18.40% | 14.50% |

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