DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Location and Amount of Gain (Loss) from Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 26, 2018	Aug. 27, 2017
Derivatives, Fair Value [Line Items]
Total gains (losses) from derivative instruments not designated as hedging instruments	$ (6.5)	$ (7.1)
Commodity contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total gains (losses) from derivative instruments not designated as hedging instruments	(7.0)	0.6
Foreign exchange contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total gains (losses) from derivative instruments not designated as hedging instruments	0.5	(8.0)
Foreign exchange contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total gains (losses) from derivative instruments not designated as hedging instruments	$ 0.0	$ 0.3