LEASES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	May 28, 2017	May 29, 2016	May 31, 2015
Operating Leased Assets [Line Items]
Assets under capital and financing leases	$ 119.5	$ 130.9
Accumulated depreciation	47.7	37.3
Non-cash issuances of capital and financing lease obligations	0.5	103.3	$ 2.2
Continuing operations
Operating Leased Assets [Line Items]
Rent expense under all operating leases	$ 71.2	$ 77.4	$ 77.6