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Note 14 - Fair Value Measurements (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Aug. 28, 2022	Aug. 29, 2021	May 29, 2022
Goodwill, Impairment Loss	$ 141.7
Asset Impairment Charges, Total	412.8	$ 0.7
Long-Term Debt, Total	8,790.0		$ 8,800.0
Fair Value, Inputs, Level 2 [Member]
Long-Term Debt, Fair Value	8,710.0		$ 8,850.0
Refrigerated And Frozen [Member]
Goodwill, Impairment Loss	141.7
Asset Impairment Charges, Total	5.7
Refrigerated And Frozen [Member] \| Selling, General and Administrative Expenses [Member]
Goodwill, Impairment Loss	141.7
Refrigerated And Frozen [Member] \| Trade Names [Member] \| Selling, General and Administrative Expenses [Member]
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)	244.0
Grocery And Snacks [Member]
Goodwill, Impairment Loss	(0.0)
Asset Impairment Charges, Total	0.5
Foodservice [Member]
Goodwill, Impairment Loss	(0.0)
Asset Impairment Charges, Total	$ 20.5