DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Derivative Assets and Liabilities Where Legal Right of Setoff Existed (Details) - Total derivatives not designated as hedging instruments - USD ($) $ in Millions	May 26, 2019	May 27, 2018
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 6.4	$ 5.8
Derivative Liabilities	1.8	0.5
Commodity contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	4.9	3.7
Commodity contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0.9	0.4
Foreign exchange contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	1.4	2.1
Foreign exchange contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0.9	0.0
Other | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	0.1	0.0
Other | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 0.0	$ 0.1