DERIVATIVE FINANCIAL INSTRUMENTS (Derivatives Not Designated as Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 26, 2013	May 27, 2012	May 29, 2011
Derivatives, Fair Value [Line Items]
Net gains (losses) from derivative instruments	$ 151.2	$ 66.1	$ 32.1
Commodity contracts | Sales
Derivatives, Fair Value [Line Items]
Net gains (losses) from derivative instruments	(11.5)	(6.4)	3.8
Commodity contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Net gains (losses) from derivative instruments	142.2	58.5	54.3
Commodity contracts | Selling, general and administrative expenses
Derivatives, Fair Value [Line Items]
Net gains (losses) from derivative instruments	0.1	(0.1)	2.1
Foreign exchange contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Net gains (losses) from derivative instruments	20.3	5.4	(20.2)
Foreign exchange contracts | Selling, general and administrative expenses
Derivatives, Fair Value [Line Items]
Net gains (losses) from derivative instruments	$ 0.1	$ 8.7	$ (7.9)