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Treasury Stock - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Nov. 30, 2023 | Aug. 31, 2023 | Nov. 30, 2022 | Aug. 31, 2022 | Nov. 30, 2023 | Jul. 19, 2023
Equity, Attributable to Parent [Abstract] |  |  |  |  |  |
Authorized amount of stock to be repurchased | $ 150,000,000.0 |  |  |  | $ 150,000,000.0 | $ 100,000,000.0
Treasury stock, value acquired | 52,300,000 | $ 36,200,000 | $ 26,000,000.0 | $ 5,100,000 | 88,500,000 |
Excise tax on stock repurchased | $ 400,000 |  |  |  | $ 700,000 |

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