Retirement Benefits and Postemployment Benefits (Accumulated Benefit Obligations in Excess of Plan Assets) (Details) - Defined Benefit Pension Plans [Member] - USD ($) $ in Millions	May 28, 2023	May 29, 2022
Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets [Abstract]
Projected benefit obligation	$ 466.2	$ 508.2
Accumulated benefit obligation	453.4	479.6
Plan assets at fair value	$ 18.7	$ 20.5