DERIVATIVE FINANCIAL INSTRUMENTS (Derivatives Not Designated as Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Feb. 22, 2015	Feb. 23, 2014	Feb. 22, 2015	Feb. 23, 2014
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	$ (32.5)	$ (4.3)	$ (92.5)	$ (31.2)
Commodity contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	(40.1)	42.3	(102.5)	13.3
Foreign exchange contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	0	1.6	1.2	2.5
Foreign exchange contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	7.6	6.7	10.2	7.9
Interest rate contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total loss from derivative instruments not designated as hedging instruments	$ 0	$ (54.9)	$ (1.4)	$ (54.9)