DERIVATIVE FINANCIAL INSTRUMENTS (Derivatives Not Designated as Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 24, 2014	Aug. 25, 2013
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	$ (39.4)	$ (16.1)
Commodity contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	(38.6)	(15.5)
Foreign exchange contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	0.3	(1.2)
Foreign exchange contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	0.3	0.6
Interest rate contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	$ (1.4)	$ 0