Note 5 - Goodwill and Other Identifiable Intangible Assets - Change in Carrying Amount of Goodwill (Details) $ in Millions	3 Months Ended
	Aug. 28, 2022 USD ($)
Balance	$ 11,329.2
Currency translation	(3.9)
Impairment	(141.7)
Balance	11,183.6
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	(3.9)
Impairment	0.0
Balance	288.9
Foodservice [Member]
Balance	732.8
Currency translation	0.0
Impairment	0.0
Balance	$ 732.8