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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