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Commitments and Contingencies - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
May 31, 2023
May 31, 2022
Operating Leased Assets [Line Items]    
Insurance Recoveries $ (5.0)  
Amount awarded to other party   $ (6.6)
Standby Letters of Credit    
Operating Leased Assets [Line Items]    
Open standby letters of credit $ (3.8) $ (4.1)
Letters of Credit, Term 1 year  
Letters of Credit, Term 1 year