v3.25.2
Retirement Benefits and Postemployment Benefits (Components of Net Periodic Benefit Expense) (Details) - USD ($)
$ in Millions
 12 Months Ended
May 25, 2025
May 26, 2024
May 28, 2023
Defined Benefit Pension Plans [Member]      
Components of Net Periodic Benefit Cost [Abstract]      
Service cost $ 51.8 $ 56.8 $ 70.3
Interest cost 306.9 296.5 258.5
Expected return on plan assets (420.1) (417.7) (420.5)
Amortization of losses (gains) 100.4 86.5 113.2
Amortization of prior service costs (credits) 1.4 1.8 1.5
Other adjustments 0.0 0.0 0.0
Settlement or curtailment gains 0.0 (4.0) (0.7)
Net expense (income) 40.4 19.9 22.3
Other Postretirement Benefit Plans [Member]      
Components of Net Periodic Benefit Cost [Abstract]      
Service cost 4.3 4.7 5.1
Interest cost 21.1 21.3 17.9
Expected return on plan assets (35.9) (34.7) (31.1)
Amortization of losses (gains) (20.5) (20.4) (19.3)
Amortization of prior service costs (credits) (22.1) (21.8) (23.2)
Other adjustments 0.0 0.0 0.0
Settlement or curtailment gains 0.0 0.0 0.0
Net expense (income) (53.1) (50.9) (50.6)
Postemployment Benefit Plans [Member]      
Components of Net Periodic Benefit Cost [Abstract]      
Service cost 7.0 7.4 8.4
Interest cost 4.0 4.0 3.1
Expected return on plan assets 0.0 0.0 0.0
Amortization of losses (gains) 0.5 0.1 0.4
Amortization of prior service costs (credits) (1.6) 0.3 0.3
Other adjustments 11.5 8.3 10.4
Settlement or curtailment gains 0.0 0.0 0.0
Net expense (income) $ 21.4 $ 20.1 $ 22.6