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Note 13 - Fair Value Measurements (Details Textual) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Feb. 26, 2023	Nov. 27, 2022	Aug. 28, 2022	Feb. 26, 2023	Feb. 27, 2022	May 29, 2022
Asset Impairment Charges, Total				$ 417.7	$ 72.7
Goodwill, Impairment Loss				141.7
Long-Term Debt, Total	$ 8,600.0			8,600.0		$ 8,800.0
Fair Value, Inputs, Level 2 [Member]
Long-Term Debt, Fair Value	8,250.0			8,250.0		$ 8,850.0
Refrigerated And Frozen [Member]
Asset Impairment Charges, Total		$ 12.0	$ 5.7
Goodwill, Impairment Loss				141.7
Grocery And Snacks [Member]
Asset Impairment Charges, Total		22.4	0.5
Goodwill, Impairment Loss				(0.0)
Foodservice [Member]
Asset Impairment Charges, Total		$ 4.8	20.5
Goodwill, Impairment Loss				$ (0.0)
Selling, General and Administrative Expenses [Member] \| Refrigerated And Frozen [Member]
Goodwill, Impairment Loss			141.7
Selling, General and Administrative Expenses [Member] \| Refrigerated And Frozen [Member] \| Trade Names [Member]
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)			$ 244.0
Selling, General and Administrative Expenses [Member] \| Convertible Note Receivable [Member]
Asset Impairment Charges, Total	$ 3.9