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SHARE-BASED PAYMENTS - Performance-Based Restricted Stock Unit Awards (Narrative) (Details)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Apr. 15, 2019
$ / shares
shares
May 26, 2019
USD ($)
May 28, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk-free interest rates (percent)     1.03%
Expected volatility (percent)     19.15%
Performance-Based Restricted Stock Unit Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in shares) | shares 0.2    
Granted (in dollars per share) | $ / shares $ 41.82    
Eligibility adjustment based on relative TSR (percent)   25.00%  
Maximum ratio of award payout relative to grant value of each grantees award   8.6  
Risk-free interest rates (percent)   2.35%  
Expected volatility (percent)   24.92%  
Compensation expense (income)   $ 0.3  
Tax benefit   0.1  
Unrecognized compensation expense, net of estimated forfeitures, related to performance shares   $ 7.4  
Weighted average period for recognition   3 years  
Minimum | Performance-Based Restricted Stock Unit Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award payout (as a percent) 0.00%    
Maximum | Performance-Based Restricted Stock Unit Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award payout (as a percent) 500.00%