Note 5 - Derivative Financial Instruments - Schedule of Derivative Assets and Liabilities on a Gross Basis (Details) - USD ($) $ in Millions	Feb. 26, 2023	May 29, 2022
Derivative Assets	$ 2.4	$ 27.1
Derivative Liabilities	11.9	18.3
Prepaid Expenses and Other Current Assets [Member] | Commodity Contract [Member]
Derivative Assets	0.9	26.8
Prepaid Expenses and Other Current Assets [Member] | Foreign Exchange Contract [Member]
Derivative Assets	1.5	0.3
Other Accrued Liabilities [Member] | Commodity Contract [Member]
Derivative Liabilities	9.9	16.1
Other Accrued Liabilities [Member] | Foreign Exchange Contract [Member]
Derivative Liabilities	$ 2.0	$ 2.2