LEASES - Supplemental Cash Flow Information (Details) $ in Millions	6 Months Ended
	Nov. 24, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Cash used for operating activities	$ 11.1
Cash paid for amounts included in the measurement of lease liabilities:
Cash used for financing activities	1.0
Noncash investing and financing activities:
Asset obtained in exchange for new operating lease obligations	20.2
Assets obtained in exchange for new finance lease obligations	$ 1.9