Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Plans (Restricted Stock Awards Activity) (Details)

v3.24.2
Stock-Based Compensation Plans (Restricted Stock Awards Activity) (Details) - $ / shares
shares in Millions
12 Months Ended
May 31, 2024
May 31, 2023
May 31, 2022
Time-Based Restricted Stock Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested, Beginning balance 0.1    
Vested (0.1)    
Forfeited 0.0    
Nonvested, Ending balance 0.0 0.1  
Nonvested, Beginning balance, Weighted-average grant-date fair value per share $ 95.1    
Granted, Weighted-average grant-date fair value per share 0 $ 0 $ 114.21
Vested, Weighted-average grant-date fair value per share 88.11    
Forfeited, Weighted-average grant-date fair value per share 114.15    
Nonvested, Ending balance, Weighted-average grant-date fair value per share $ 114.22 $ 95.1  
Performance-Based Restricted Stock Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested, Beginning balance 0.1    
Vested 0.0    
Forfeited 0.0    
Nonvested, Ending balance 0.1 0.1  
Nonvested, Beginning balance, Weighted-average grant-date fair value per share $ 107.4    
Granted, Weighted-average grant-date fair value per share 0 $ 0 $ 103.97
Vested, Weighted-average grant-date fair value per share 0    
Forfeited, Weighted-average grant-date fair value per share 107.4    
Nonvested, Ending balance, Weighted-average grant-date fair value per share $ 107.4 $ 107.4