DERIVATIVE FINANCIAL INSTRUMENTS (Derivatives Not Designated as Hedging Instruments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2016	Feb. 22, 2015	Feb. 28, 2016	Feb. 22, 2015
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	$ (3.9)	$ (24.2)	$ (14.2)	$ (67.9)
Commodity contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	(5.4)	(31.5)	(20.4)	(77.6)
Foreign exchange contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	0.4	0.0	0.4	1.3
Foreign exchange contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	$ 1.1	$ 7.3	5.8	9.8
Interest rate contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments			$ 0.0	$ (1.4)