EMPLOYEE BENEFIT PLANS AND OTHER POST-RETIREMENT BENEFITS - Changes in Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	May 29, 2022	May 30, 2021
Pension Plans
Change in Plan Assets
Fair value of plan assets at beginning of year	$ 28.1	$ 27.2
Actual return on plan assets	(4.6)	(2.0)
Company contributions	2.0	3.4
Benefits paid	(0.4)	(0.5)
Fair value of plan assets at end of year	25.1	28.1
Post-Retirement Plan
Change in Plan Assets
Participants contributions	0.3	0.3
Benefits paid	$ (0.3)	(0.2)
Other		$ (0.1)