DERIVATIVE FINANCIAL INSTRUMENTS (Assets and Liabilities on A Gross Basis) (Details) (USD $) In Millions, unless otherwise specified	Aug. 24, 2014	May 25, 2014
Derivatives, Fair Value [Line Items]
Total derivatives	$ 30.8	$ 51.8
Total derivatives	30.7	17.2
Total derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivatives	6.9	9.1
Total derivatives	0	0
Total derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivatives not designated as hedging instruments	23.9	42.7
Total derivatives not designated as hedging instruments	30.7	17.2
Interest rate swap contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Total derivatives	0	0
Interest rate swap contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Total derivatives	6.9	9.1
Commodity contracts | Other accrued liabilities | Total derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivatives not designated as hedging instruments	30.7	13.9
Commodity contracts | Prepaid expenses and other current assets | Total derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivatives not designated as hedging instruments	12.1	28.6
Foreign exchange contracts | Other accrued liabilities | Total derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivatives not designated as hedging instruments	0	3.3
Foreign exchange contracts | Prepaid expenses and other current assets | Total derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivatives not designated as hedging instruments	10.9	13.4
Other | Other accrued liabilities | Total derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivatives not designated as hedging instruments	0	0
Other | Prepaid expenses and other current assets | Total derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivatives not designated as hedging instruments	$ 0.9	$ 0.7