Note 7 - Goodwill and Other Identifiable Intangible Assets - Change in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	May 29, 2022	May 30, 2021
Balance	$ 11,338.9	$ 11,326.9
Currency translation	(9.7)	12.0
Balance	11,329.2	11,338.9
Grocery And Snacks [Member]
Balance	4,692.4	4,692.4
Currency translation	0.0	0.0
Balance	4,692.4	4,692.4
Refrigerated And Frozen [Member]
Balance	5,611.2	5,611.2
Currency translation	0.0	0.0
Balance	5,611.2	5,611.2
International [Member]
Balance	302.5	290.5
Currency translation	(9.7)	12.0
Balance	292.8	302.5
Foodservice [Member]
Balance	732.8	732.8
Currency translation	0.0	0.0
Balance	$ 732.8	$ 732.8