DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Derivative Assets and Liabilities on a Gross Basis (Details) - Total derivatives not designated as hedging instruments - USD ($) $ in Millions	Aug. 25, 2019	May 26, 2019
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 1.2	$ 6.4
Derivative Liabilities	3.7	1.8
Commodity contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	0.7	4.9
Commodity contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	3.1	0.9
Foreign exchange contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	0.5	1.4
Foreign exchange contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 0.6	0.9
Other | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets		0.1
Other | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities		$ 0.0