DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Derivative Assets and Liabilities on a Gross Basis (Details) - Total derivatives not designated as hedging instruments - USD ($) $ in Millions	Feb. 25, 2018	May 28, 2017
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 2.1	$ 2.8
Derivative Liabilities	2.0	2.7
Commodity contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	1.9	2.6
Commodity contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	1.3	1.4
Foreign exchange contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	0.2	0.2
Foreign exchange contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 0.7	1.1
Other | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets		0.0
Other | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities		$ 0.2