EMPLOYEE BENEFIT PLANS AND OTHER POST-RETIREMENT BENEFITS - Changes in Plan Assets and Benefit Obligations (Details) - USD ($) $ in Millions	12 Months Ended
May 29, 2022	May 30, 2021	May 31, 2020
Pension Plans
Components of other comprehensive income (loss)
Prior service cost	$ 0.1
Actuarial (gain) loss	(2.7)	$ 3.4	$ 0.6
Amortization of actuarial gain (loss)	(0.4)	(0.1)	(0.2)
Total recognized in other comprehensive loss (income)	(3.0)	3.3	0.4
Post-Retirement Plan
Components of other comprehensive income (loss)
Actuarial (gain) loss	(1.1)	(0.2)	(1.0)
Amortization of actuarial gain (loss)		(0.2)	(0.6)
Total recognized in other comprehensive loss (income)	$ (1.1)	$ (0.4)	$ (1.6)

Amount, after tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
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-URI https://asc.fasb.org/extlink&oid=126968391&loc=SL34724391-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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-Publisher FASB
-Name Accounting Standards Codification
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