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BUSINESS SEGMENTS AND RELATED INFORMATION - Schedule of Net Derivative Gains (Losses) from Economic Hedges of Forecasted Commodity Consumption and Foreign Currency Risk (Details) - USD ($) $ in Millions | 3 Months Ended
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Aug. 29, 2021 | Aug. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gross derivative gains (losses) incurred | $ 10.2 |
Commodity Contracts and Foreign Currency Contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gross derivative gains (losses) incurred | 10.2 | $ (4.0)
Commodity Contracts and Foreign Currency Contracts | Reporting segments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gross derivative gains (losses) incurred | 5.0 | (1.5)
Commodity Contracts and Foreign Currency Contracts | Reporting segments | Net derivative gains (losses) allocated to Grocery & Snacks |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gross derivative gains (losses) incurred | 3.2 | (1.8)
Commodity Contracts and Foreign Currency Contracts | Reporting segments | Net derivative gains (losses) allocated to Refrigerated & Frozen |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gross derivative gains (losses) incurred | 4.7 | (1.1)
Commodity Contracts and Foreign Currency Contracts | Reporting segments | Net derivative gains (losses) allocated to International |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gross derivative gains (losses) incurred | (3.2) | 1.6
Commodity Contracts and Foreign Currency Contracts | Reporting segments | Net derivative gains (losses) allocated to Foodservice |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gross derivative gains (losses) incurred | 0.3 | (0.2)
Commodity Contracts and Foreign Currency Contracts | Corporate |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gross derivative gains (losses) incurred | $ 5.2 | $ (2.5)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 + Details
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