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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. 30, 2020 | May 31, 2020
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Derivatives, Fair Value [Line Items] |  |
Derivative Assets | $ 3.3 | $ 8.4
Derivative Liabilities | 2.5 | 1.9
Commodity contracts | Prepaid expenses and other current assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets | 2.5 | 3.3
Commodity contracts | Other accrued liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liabilities | 0.3 | 1.9
Foreign exchange contracts | Prepaid expenses and other current assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets | 0.8 | 5.1
Foreign exchange contracts | Other accrued liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liabilities | $ 2.2 | $ 0.0

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