NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	May 28, 2017	May 29, 2016	May 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, at cost	$ 2,349.5	$ 2,034.2
Less accumulated depreciation	(1,078.3)	(991.1)
Property, plant, and equipment, net	1,271.2	1,043.1
Depreciation	104.3	93.9	$ 93.8
Capital Expenditures Incurred but Not yet Paid	60.4	15.5
Land improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, at cost	$ 139.8	136.5
Land improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	1 year
Land improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	40 years
Buildings
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, at cost	$ 1,917.7	1,776.1
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	15 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	40 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	20 years
Furniture, fixtures, office equipment and other
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, at cost	$ 62.6	53.1
Furniture, fixtures, office equipment and other | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Furniture, fixtures, office equipment and other | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	15 years
Construction in progress
Property, Plant and Equipment [Line Items]
Interest capitalized	$ 5.2	2.7	$ 1.5
Property, plant, and equipment, at cost	$ 229.4	$ 68.5