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Related Party Transactions (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 25, 2022 | Jan. 19, 2022 | Feb. 28, 2023 | Nov. 30, 2022 | Aug. 31, 2022 | Feb. 28, 2022 | Nov. 30, 2021 | Feb. 28, 2023 | Jan. 12, 2022
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Number of common stock repurchased (in shares) | 533,793 |  |  |  |  |  |  |  |
Treasury stock acquired, average cost per share (in dollars per share) | $ 40.00 |  |  |  |  |  |  |  |
Treasury stock, value acquired | $ 23.3 |  | $ 46.9 | $ 26.0 | $ 5.1 | $ 15.4 | $ 4.2 | $ 78.0 |
Share Repurchase Agreement with M. Richard Robinson, Jr. |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Number of common stock repurchased (in shares) |  | 300,000 |  |  |  |  |  |  |
Treasury stock acquired, average cost per share (in dollars per share) |  | $ 40.65 |  |  |  |  |  |  |
Treasury stock, value acquired |  | $ 12.2 |  |  |  |  |  |  |
Treasury stock, percent discount to closing price paid |  | 4.20% |  |  |  |  |  |  |
Treasury stock, price per share (in dollars per share) |  |  |  |  |  |  |  |  | $ 42.43

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