v3.26.1
RETIREMENT BENEFITS AND POSTEMPLOYMENT BENEFITS - Schedule of Financial Information About Defined Benefit Pension, Other Postretirement Benefit, and Postemployment Benefit Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
May 31, 2026
May 25, 2025
May 26, 2024
Defined Benefit Pension Plans      
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value at beginning of year $ 5,317.2 $ 5,439.7  
Actual return on assets 383.4 188.6  
Employer contributions 31.6 30.7  
Plan participant contributions 3.6 2.4  
Benefits payments (359.6) (349.5)  
Foreign currency 0.2 5.3  
Fair value at end of year (a) 5,376.4 5,317.2 $ 5,439.7
Change in Projected Benefit Obligation:      
Benefit obligation at beginning of year 5,627.5 5,801.7  
Service cost 42.2 51.8 56.8
Interest cost 291.5 306.9 296.5
Plan amendment 2.2 0.4  
Curtailment/other 0.0 0.0  
Plan participant contributions 3.6 2.4  
Actuarial loss (gain) 50.0 (191.4)  
Benefits payments (359.6) (349.5)  
Reclassified to liabilities held for sale 0.0 0.0  
Foreign currency 1.7 5.2  
Projected benefit obligation at end of year (a) 5,659.1 5,627.5 5,801.7
Plan assets (less) more than benefit obligation as of fiscal year end (282.7) (310.3)  
Other Postretirement Benefit Plans      
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value at beginning of year 458.0 463.2  
Actual return on assets 61.5 35.7  
Employer contributions 0.1 0.1  
Plan participant contributions 6.6 6.6  
Benefits payments (44.5) (47.6)  
Foreign currency 0.0 0.0  
Fair value at end of year (a) 481.7 458.0 463.2
Change in Projected Benefit Obligation:      
Benefit obligation at beginning of year 337.4 403.0  
Service cost 2.3 4.3 4.7
Interest cost 16.4 21.1 21.3
Plan amendment 3.1 0.0  
Curtailment/other (0.5) 0.0  
Plan participant contributions 6.6 6.6  
Actuarial loss (gain) 4.4 (48.1)  
Benefits payments (49.8) (49.0)  
Reclassified to liabilities held for sale (4.3) 0.0  
Foreign currency 0.0 (0.5)  
Projected benefit obligation at end of year (a) 315.6 337.4 403.0
Plan assets (less) more than benefit obligation as of fiscal year end 166.1 120.6  
Postemployment Benefit Plans      
Change in Projected Benefit Obligation:      
Benefit obligation at beginning of year 123.1 129.0  
Service cost 6.9 7.0 7.4
Interest cost 3.5 4.0 4.0
Plan amendment 0.0 0.0  
Curtailment/other 7.0 8.1  
Plan participant contributions 0.0 0.0  
Actuarial loss (gain) (5.4) (2.1)  
Benefits payments (17.3) (22.9)  
Reclassified to liabilities held for sale 0.0 0.0  
Foreign currency 0.0 0.0  
Projected benefit obligation at end of year (a) 117.8 123.1 $ 129.0
Plan assets (less) more than benefit obligation as of fiscal year end $ (117.8) $ (123.1)