Note 5 - Divestitures and Assets Held for Sale (Details Textual) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	May 30, 2021	Feb. 28, 2021	Nov. 29, 2020	May 28, 2023	May 29, 2022	May 30, 2021
Proceeds from Divestiture of Businesses				$ 0.0	$ 0.1	$ 160.9
Gain (Loss) on Disposition of Business				(0.0)	(0.0)	65.5
Asset Impairment Charges				771.1	284.8	$ 95.5
Assets				22,052.6	22,435.1
Liabilities				13,245.3	13,572.9
Transferred From Held-for-sale to Held-for-use [Member]
Assets					58.9
Liabilities					4.1
Egg Beaters Business [Member]
Proceeds from Divestiture of Businesses	$ 50.7
Egg Beaters Business [Member] | Selling, General and Administrative Expenses [Member]
Gain (Loss) on Disposition of Business	10.4
Loss On Sale Of Business, Related To Early Exit Of Unfavorable Contract	$ 7.1
Peter Pan Peanut Butter Business [Member]
Proceeds from Divestiture of Businesses		$ 101.5
Peter Pan Peanut Butter Business [Member] | Selling, General and Administrative Expenses [Member]
Gain (Loss) on Disposition of Business		$ 49.8
H K Anderson Business [Member]
Proceeds from Divestiture of Businesses			$ 8.7
H K Anderson Business [Member] | Selling, General and Administrative Expenses [Member]
Gain (Loss) on Disposition of Business			$ 5.3
Direct Store Delivery Snacks Business [Member] | Selling, General and Administrative Expenses [Member]
Asset Impairment Charges				$ 26.7	$ 70.1