v3.26.1
RETIREMENT BENEFITS AND POSTEMPLOYMENT BENEFITS - Schedule of Weighted-Average Assumptions (Details)
 12 Months Ended
May 31, 2026
May 25, 2025
May 26, 2024
Defined Benefit Pension Plans      
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 5.72% 5.79%  
Rate of salary increases 3.87% 3.88%  
Discount rate 5.79% 5.52% 5.18%
Service cost effective rate 6.02% 5.58% 5.27%
Interest cost effective rate 5.32% 5.40% 5.06%
Rate of salary increases 3.88% 4.23% 4.20%
Expected long-term rate of return on plan assets 7.52% 7.63% 7.13%
Other Postretirement Benefit Plans      
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 5.54% 5.67%  
Rate of salary increases 0.00% 0.00%  
Discount rate 5.67% 5.52% 5.19%
Service cost effective rate 6.11% 5.58% 5.15%
Interest cost effective rate 5.34% 5.38% 4.96%
Rate of salary increases 0.00% 0.00% 0.00%
Expected long-term rate of return on plan assets 7.35% 7.79% 7.34%
Postemployment Benefit Plans      
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 4.97% 5.04%  
Rate of salary increases 4.12% 4.13%  
Discount rate 5.04% 5.05% 4.55%
Service cost effective rate 5.42% 5.37% 5.00%
Interest cost effective rate 4.91% 5.05% 4.61%
Rate of salary increases 4.13% 4.46% 4.46%
Expected long-term rate of return on plan assets 0.00% 0.00% 0.00%