Note 4 - Goodwill and Other Identifiable Intangible Assets - Change in Carrying Amount of Goodwill (Details) $ in Millions	9 Months Ended
	Feb. 26, 2023 USD ($)
Balance	$ 11,329.2
Currency translation	(9.4)
Impairment	(141.7)
Balance	11,178.1
Grocery And Snacks [Member]
Balance	4,692.4
Currency translation	0.0
Impairment	0.0
Balance	4,692.4
Refrigerated And Frozen [Member]
Balance	5,611.2
Currency translation	0.0
Impairment	(141.7)
Balance	5,469.5
International [Member]
Balance	292.8
Currency translation	(9.4)
Impairment	0.0
Balance	283.4
Foodservice [Member]
Balance	732.8
Currency translation	0.0
Impairment	0.0
Balance	$ 732.8