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SHARE-BASED PAYMENTS - Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Feb. 28, 2021
Feb. 23, 2020
Feb. 28, 2021
Feb. 23, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation expense (income) $ 10.4 $ 9.3 $ 42.4 $ 33.8
Restricted stock units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock granted, shares (in shares)     0.9  
Weighted average grant date price (in dollars per share)     $ 36.70  
Performance shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock granted, shares (in shares)     0.5  
Weighted average grant date price (in dollars per share)     $ 36.82  
Performance shares | Fiscal 2021        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period     3 years  
Performance shares | Fiscal 2022        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period     3 years  
Performance shares | Fiscal 2023        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period     3 years  
Performance shares | Minimum | Fiscal 2021        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award payout (as a percent)     0.00%  
Performance shares | Minimum | Fiscal 2022        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award payout (as a percent)     0.00%  
Performance shares | Minimum | Fiscal 2023        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award payout (as a percent)     0.00%  
Performance shares | Maximum | Fiscal 2021        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award payout (as a percent)     200.00%  
Performance shares | Maximum | Fiscal 2022        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award payout (as a percent)     200.00%  
Performance shares | Maximum | Fiscal 2023        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award payout (as a percent)     200.00%