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Note 19 - Business Segments and Related Information - Presentation of Derivative Gains (Losses) from Economic Hedges of Forecasted Cash Flows in Segment Results (Details) - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Millions | 12 Months Ended
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May 28, 2023 | May 29, 2022 | May 30, 2021
Net derivative gains (losses) | $ (17.6) | $ 37.1 | $ 9.5
Operating Segments [Member] |  |  |
Net derivative gains (losses) | 19.5 | 32.7 | (6.1)
Operating Segments [Member] | Grocery And Snacks [Member] |  |  |
Net derivative gains (losses) | 6.0 | 17.3 | (2.3)
Operating Segments [Member] | Refrigerated And Frozen [Member] |  |  |
Net derivative gains (losses) | 9.6 | 17.4 | (1.7)
Operating Segments [Member] | International [Member] |  |  |
Net derivative gains (losses) | 2.5 | (3.6) | (1.7)
Operating Segments [Member] | Foodservice [Member] |  |  |
Net derivative gains (losses) | 1.4 | 1.6 | (0.4)
Segment Reconciling Items [Member] |  |  |
Net derivative gains (losses) | $ (37.1) | $ 4.4 | $ 15.6

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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
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