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PENSION AND POSTRETIREMENT BENEFITS - Other Changes in Plan Assets and Benefit Obligations (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Feb. 25, 2024
May 26, 2024
May 28, 2023
PENSION AND POSTRETIREMENT BENEFITS      
Settlement loss $ 6.8    
Pension Plan [Member]      
PENSION AND POSTRETIREMENT BENEFITS      
Net actuarial gain (loss)   $ 13.3 $ (38.4)
Amendments   (0.3) (3.0)
Amortization of prior service cost (benefit)   1.6 1.4
Settlement loss   1.1  
Recognized net actuarial gain   (12.5)  
Currency     0.1
Net amount recognized   3.2 (39.9)
Other Postretirement Benefits Plan [Member]      
PENSION AND POSTRETIREMENT BENEFITS      
Net actuarial gain (loss)   0.9 6.3
Amortization of prior service cost (benefit)   (1.7) (1.7)
Recognized net actuarial gain   (4.7) (4.4)
Net amount recognized   $ (5.5) $ 0.2