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PENSION AND POSTRETIREMENT BENEFITS - Schedule of Changes in Benefit Obligations and Plan Asset (Details) - USD ($)
$ in Millions
12 Months Ended
May 26, 2024
May 28, 2023
May 29, 2022
Pension Plan [Member]      
PENSION AND POSTRETIREMENT BENEFITS      
Benefit obligation at beginning of year $ 2,800.2 $ 3,132.6  
Service cost 5.8 6.5 $ 8.7
Interest cost 144.7 124.0 83.3
Amendments 0.3 3.0  
Actuarial gain (31.2) (265.5)  
Plan settlements (70.8)    
Benefits paid (274.3) (199.3)  
Currency   (1.1)  
Benefit obligation at end of year 2,574.7 2,800.2 3,132.6
Fair value of plan assets at beginning of year 2,948.5 3,294.7  
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) 118.4 (158.1)  
Employer contributions 12.2 12.5  
Plan settlements (65.9)    
Benefits paid (274.3) (199.3)  
Currency   (1.3)  
Fair value of plan assets at end of year 2,738.9 2,948.5 3,294.7
Other Postretirement Benefits Plan [Member]      
PENSION AND POSTRETIREMENT BENEFITS      
Benefit obligation at beginning of year 53.2 64.8  
Service cost 0.1 0.1 0.2
Interest cost 2.5 2.3 1.3
Actuarial gain (0.8) (6.3)  
Benefits paid (6.9) (7.3)  
Currency   (0.4)  
Benefit obligation at end of year 48.1 53.2 64.8
Fair value of plan assets at beginning of year 3.5 3.4  
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) 0.2 0.1  
Employer contributions 6.9 7.3  
Benefits paid (6.9) (7.3)  
Fair value of plan assets at end of year $ 3.7 $ 3.5 $ 3.4