FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2021	Aug. 30, 2020	Nov. 28, 2021	Nov. 29, 2020	May 30, 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Asset impairment charges			$ 41.6	$ 3.9
Carrying amount of long-term debt (including current installments)	$ 8,800.0		8,800.0		$ 8,300.0
Estimated fair value of debt	10,190.0		$ 10,190.0		$ 9,760.0
Grocery & Snacks
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Asset impairment charges	22.4	$ 3.0
Refrigerated & Frozen
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Asset impairment charges	12.0
Foodservice
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Asset impairment charges	$ 4.8