v3.26.1
RETIREMENT BENEFITS AND POSTEMPLOYMENT BENEFITS - Schedule of Amounts Recognized in AOCI (Details) - USD ($)
$ in Millions
May 31, 2026
May 25, 2025
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial (loss) gain $ (1,698.3) $ (1,726.8)
Prior service (costs) credits 46.8 65.9
Amounts recorded in accumulated other comprehensive loss (1,651.5) (1,660.9)
Defined Benefit Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial (loss) gain (1,911.3) (1,935.4)
Prior service (costs) credits (6.3) (7.5)
Amounts recorded in accumulated other comprehensive loss (1,917.6) (1,942.9)
Other Postretirement Benefit Plans    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial (loss) gain 212.1 212.7
Prior service (costs) credits 48.0 67.4
Amounts recorded in accumulated other comprehensive loss 260.1 280.1
Postemployment Benefit Plans    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial (loss) gain 0.9 (4.1)
Prior service (costs) credits 5.1 6.0
Amounts recorded in accumulated other comprehensive loss $ 6.0 $ 1.9