RETIREMENT PLANS (Reconciliation Of The Plans' Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
	May 26, 2024	May 28, 2023	May 29, 2022
Defined Benefit Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of period	$ 3.7	$ 4.1
Interest cost	0.2	0.1	$ 0.1
Benefits paid	(0.4)	(0.5)
Actuarial (gain) loss	0.0	0.0
Benefit obligation at end of period	3.5	3.7	4.1
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of period	0.0	0.0
Employer contributions	0.4	0.4	0.4
Benefits paid	(0.4)	(0.4)
Plan assets at end of period	0.0	0.0	0.0
Unfunded status at end of period	(3.5)	(3.7)
Postretirement Benefit Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of period	15.4	18.0
Interest cost	0.7	0.7	0.4
Benefits paid	(1.3)	(1.7)
Actuarial (gain) loss	(2.5)	(1.6)
Benefit obligation at end of period	12.3	15.4	18.0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of period	0.0	0.0
Employer contributions	1.3	1.7	1.8
Benefits paid	(1.3)	(1.7)
Plan assets at end of period	0.0	0.0	$ 0.0
Unfunded status at end of period	$ (12.3)	$ (15.4)