GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS - Schedule of Change in Carrying Amount of Goodwill (Details) $ in Millions	9 Months Ended
	Feb. 27, 2022 USD ($)
Goodwill
Balance as of May 30, 2021	$ 11,338.9
Currency translation	(6.5)
Balance as of February 27, 2022	11,332.4
Grocery & Snacks
Goodwill
Balance as of May 30, 2021	4,692.4
Currency translation	0.0
Balance as of February 27, 2022	4,692.4
Refrigerated & Frozen
Goodwill
Balance as of May 30, 2021	5,611.2
Currency translation	0.0
Balance as of February 27, 2022	5,611.2
International
Goodwill
Balance as of May 30, 2021	302.5
Currency translation	(6.5)
Balance as of February 27, 2022	296.0
Foodservice
Goodwill
Balance as of May 30, 2021	732.8
Currency translation	0.0
Balance as of February 27, 2022	$ 732.8