LEASES - Components of Total Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	May 30, 2021	May 31, 2020
Lease Cost [Abstract]
Operating lease cost	$ 51.0	$ 63.7
Finance lease cost
Depreciation of leased assets	19.0	15.4
Interest on lease liabilities	8.2	9.1
Short-term lease cost	5.1	3.8
Total lease cost	$ 83.3	$ 92.0