v3.25.2
Retirement Benefits and Postemployment Benefits (Weighted-Average Assumptions 2) (Details)
 12 Months Ended
May 25, 2025
May 26, 2024
May 28, 2023
Defined Benefit Pension Plans [Member]      
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 5.52% 5.18% 4.39%
Service cost effective rate 5.58% 5.27% 4.57%
Interest cost effective rate 5.40% 5.06% 4.03%
Rate of salary increases 4.23% 4.20% 4.18%
Expected long-term rate of return on plan assets 7.63% 7.13% 6.70%
Other Postretirement Benefit Plans [Member]      
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 5.52% 5.19% 4.36%
Service cost effective rate 5.58% 5.15% 4.41%
Interest cost effective rate 5.38% 4.96% 3.80%
Rate of salary increases 0.00% 0.00% 0.00%
Expected long-term rate of return on plan assets 7.79% 7.34% 6.76%
Postemployment Benefit Plans [Member]      
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 5.05% 4.55% 3.62%
Service cost effective rate 5.37% 5.00% 3.69%
Interest cost effective rate 5.05% 4.61% 3.35%
Rate of salary increases 4.46% 4.46% 4.46%
Expected long-term rate of return on plan assets 0.00% 0.00% 0.00%