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Share-Based Compensation Plans - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
May 31, 2022
Aug. 31, 2022
Share-based compensation plans    
Expected recognition period for unrecognized share-based compensation   2 years 1 month 6 days
Target achievement for Performance Condition Awards, as a percentage   150.00%
Restricted Stock    
Share-based compensation plans    
Number of awards granted (in shares) 165,734  
Unrecognized share-based compensation   $ 50.8
Service Condition Awards    
Share-based compensation plans    
Number of awards granted (in shares) 36,088  
Grant date fair value of shares granted in period (in dollars per share) $ 204.11  
Market Condition Awards    
Share-based compensation plans    
Number of awards granted (in shares) 82,867  
Grant date fair value of shares granted in period (in dollars per share) $ 152.91  
Performance Condition Awards    
Share-based compensation plans    
Number of awards granted (in shares) 82,867  
Grant date fair value of shares granted in period (in dollars per share) $ 204.11