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		9 Months Ended
	Feb. 26, 2017	Feb. 28, 2016	Feb. 26, 2017	Feb. 28, 2016
Derivatives, Fair Value [Line Items]
Total gain (loss) from derivative instruments not designated as hedging instruments	$ (1.1)	$ (2.6)	$ 2.9	$ (7.6)
Commodity contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total gain (loss) from derivative instruments not designated as hedging instruments	0.5	(3.3)	1.7	(13.0)
Foreign exchange contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total gain (loss) from derivative instruments not designated as hedging instruments	(0.2)	0.0	1.3	0.0
Foreign exchange contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total gain (loss) from derivative instruments not designated as hedging instruments	$ (1.4)	$ 0.7	$ (0.1)	$ 5.4