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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. 25, 2019 | May 26, 2019
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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

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