Note 18 - Fair Value Measurements (Details Textual) - USD ($) $ in Millions	12 Months Ended
May 29, 2022	May 30, 2021	May 31, 2020
Asset Impairment Charges, Total	$ 284.8	$ 95.5	$ 259.9
Operating Lease, Impairment Loss		2.9	2.9
Long-Term Debt, Total	8,800.0	8,300.0
Long-Term Debt, Fair Value	8,850.0	9,760.0
Grocery And Snacks [Member]
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)	90.7	13.0	46.4
Asset Impairment Charges, Total	26.3		54.4
Impairment, Long-Lived Asset, Held-for-Use, Total	3.0
Refrigerated And Frozen [Member]
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)	103.9	76.9	110.8
Asset Impairment Charges, Total		28.9	27.6
Impairment, Long-Lived Asset, Held-for-Use, Total		3.8
International [Member]
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)	$ 14.4	$ 1.0	8.3
Foodservice [Member]
Asset Impairment Charges, Total			$ 14.9
Asset Retirement Obligations [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	15 years
Asset Retirement Obligations [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	25 years
Changes Measurement [Member]
Asset Retirement Obligation, Legally Restricted Assets, Fair Value	$ 27.4

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Carrying amount of an asset that is legally restricted for purposes of settling an asset retirement obligation.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Amount of loss from impairment of right-of-use asset from operating lease.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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