Note 6 - Derivative Financial Instruments (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Aug. 27, 2023	Aug. 28, 2022	Nov. 25, 2018	May 28, 2023	May 29, 2022
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	$ 4.1	$ (2.3)
Equity, Including Portion Attributable to Noncontrolling Interest	8,955.1	$ 8,576.7		$ 8,807.3	$ 8,862.2
Cash Flow Hedge Pinnacle [Member]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax			$ 47.5
Cash Flow Hedge Pinnacle [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Equity, Including Portion Attributable to Noncontrolling Interest	30.6
Commodity Contract [Member] | Long [Member]
Derivative, Notional Amount	94.3			134.6
Foreign Exchange Contract [Member]
Derivative, Notional Amount	$ 94.5			$ 87.3