LEASES - Schedule of Cash Flows Arising from Lease Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	May 30, 2021	May 31, 2020
Leases [Abstract]
Operating cash outflows from operating leases	$ 56.0	$ 59.5
Operating cash outflows from finance leases	8.3	9.2
Financing cash outflows from finance leases	24.3	22.5
Operating leases	21.1	41.6
Finance leases	$ 26.1	$ 12.2