Note 5 - Derivative Financial Instruments (Details Textual) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Nov. 27, 2022	Nov. 28, 2021	Nov. 24, 2019	Nov. 27, 2022	Nov. 28, 2021	Aug. 28, 2022	May 29, 2022	Aug. 29, 2021	May 30, 2021
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	$ 9.7	$ 2.2		$ 7.4	$ (0.3)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance	8,737.7	$ 8,756.9		8,737.7	$ 8,756.9	$ 8,576.7	$ 8,862.2	$ 8,635.9	$ 8,631.4
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset	0.7			0.7			20.1
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset	0.4			0.4			16.1
Fair Value, Inputs, Level 2 [Member]
Credit Derivative, Maximum Exposure, Undiscounted	5.4			5.4
Prepaid Expenses and Other Current Assets [Member]
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset	1.1			1.1			4.0
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]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance	33.2			33.2
Commodity Contract [Member] | Long [Member]
Derivative, Notional Amount	140.4			140.4			115.3
Commodity Contract [Member] | Short [Member]
Derivative, Notional Amount							96.7
Foreign Exchange Contract [Member]
Derivative, Notional Amount	$ 90.5			$ 90.5			$ 106.6