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Note 18 - Fair Value Measurements (Details Textual) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Aug. 28, 2022	May 28, 2023	May 29, 2022	May 30, 2021
Asset Impairment Charges		$ 771.1	$ 284.8	$ 95.5
Goodwill, Impairment Loss		141.7
Long-Term Debt, Total		8,600.0	8,800.0
Long-Term Debt, Fair Value		8,310.0	8,850.0
Grocery And Snacks [Member]
Asset Impairment Charges		0.5	26.3
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)		78.9	90.7	13.0
Goodwill, Impairment Loss		(0.0)
Impairment, Long-Lived Asset, Held-for-Use, Total				3.0
Refrigerated And Frozen [Member]
Asset Impairment Charges		5.7	28.9
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)		496.6	103.9	76.9
Goodwill, Impairment Loss		141.7
International [Member]
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)		13.7	14.4	$ 1.0
Goodwill, Impairment Loss		(0.0)
Foodservice [Member]
Asset Impairment Charges		20.5	$ 14.9
Goodwill, Impairment Loss		(0.0)
Selling, General and Administrative Expenses [Member] \| Refrigerated And Frozen [Member]
Goodwill, Impairment Loss	$ 141.7	141.7
Selling, General and Administrative Expenses [Member] \| Convertible Note Receivable [Member]
Asset Impairment Charges		$ 3.9