DERIVATIVE FINANCIAL INSTRUMENTS (Derivatives Not Designated as Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Feb. 23, 2014	Feb. 24, 2013	Feb. 23, 2014	Feb. 24, 2013
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	$ 14.7	$ 31.5	$ 32.3	$ 152.0
Commodity contracts | Sales [Member]
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	(4.6)	(8.8)	(6.6)	(9.5)
Commodity contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	66.0	22.1	83.4	148.4
Commodity contracts | Selling, General and Administrative Expenses
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments			0	0.1
Foreign exchange contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	1.6	12.7	2.5	14.0
Foreign exchange contracts | Selling, General and Administrative Expenses
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	6.6	5.5	7.9	(1.0)
Interest Rate Swap [Member] | Selling, General and Administrative Expenses
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	$ (54.9)	$ 0	$ (54.9)	$ 0