DERIVATIVE FINANCIAL INSTRUMENTS (Derivatives Not Designated as Hedging Instruments) (Details) - USD ($) $ in Millions	12 Months Ended
	May. 31, 2015	May. 25, 2014	May. 26, 2013
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	$ (99.3)	$ (23.1)	$ 78.1
Commodity contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	(109.8)	24.9	57.6
Commodity contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments			0.1
Foreign exchange contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	1.3	1.9	20.3
Foreign exchange contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	10.6	5.0	$ 0.1
Interest rate contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Total gain from derivative instruments not designated as hedging instruments	$ (1.4)	$ (54.9)