Retirement Plans (Funding Of Defined Benefit Pension Plans And Postretirement Benefit Plans) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	May 27, 2018	May 26, 2019	May 27, 2018	May 28, 2017
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans and postretirement benefit plans funding	$ 60.4
Defined Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans and postretirement benefit plans funding		$ 0.4	$ 60.8	$ 0.4
Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans and postretirement benefit plans funding		$ 1.3	$ 1.2	$ 1.2