Note 16 - Business Segments and Related Information - Segment Reporting Information by Segment (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Nov. 26, 2023	Aug. 27, 2023	Nov. 27, 2022	Aug. 28, 2022	Nov. 26, 2023	Nov. 26, 2023	Nov. 27, 2022
Net sales	$ 3,208.1		$ 3,312.9		$ 6,112.1		$ 6,217.2
Operating profit	543.3		656.1		1,069.0		718.3
Equity method investment earnings	54.3		49.3		89.8		98.5
General corporate expense	94.8		106.5		131.5		190.0
Pension and postretirement non-service expense (income)	0.4		(6.1)		0.7		(12.2)
Interest expense, net	(113.3)		(100.3)		(219.3)		(197.4)
Income tax expense	102.9		122.5		201.2		136.9
Net income	286.2		382.2		606.1	$ 606.1	304.7
Less: Net income attributable to noncontrolling interests	0.0		0.3		0.2		0.3
Net of tax	286.2	$ 319.7	381.9	$ (77.5)	605.9		304.4
Net Sales	3,208.1		3,312.9		6,112.1		6,217.2
Grocery And Snacks [Member]
Net sales	1,295.1		1,349.9		2,498.0		2,538.2
Operating profit	279.2		340.4		537.9		590.8
Net Sales	1,295.1		1,349.9		2,498.0		2,538.2
Refrigerated And Frozen [Member]
Net sales	1,338.5		1,421.5		2,490.1		2,629.1
Operating profit	220.2		250.3		419.4		34.0
Net Sales	1,338.5		1,421.5		2,490.1		2,629.1
International [Member]
Net sales	279.6		258.7		539.8		492.2
Operating profit	5.9		36.9		29.6		63.8
Net Sales	279.6		258.7		539.8		492.2
Foodservice [Member]
Net sales	294.9		282.8		584.2		557.7
Operating profit	38.0		28.5		82.1		29.7
Net Sales	294.9		282.8		584.2		557.7
Frozen [Member]
Net sales	1,106.1		1,157.5		2,054.5		2,165.9
Net Sales	1,106.1		1,157.5		2,054.5		2,165.9
Other Shelf-stable [Member]
Net sales	728.0		758.4		1,424.8		1,448.5
Net Sales	728.0		758.4		1,424.8		1,448.5
Refrigerated [Member]
Net sales	232.4		264.0		435.6		463.2
Net Sales	232.4		264.0		435.6		463.2
Snacks [Member]
Net sales	567.1		591.5		1,073.2		1,089.7
Net Sales	567.1		591.5		1,073.2		1,089.7
Foodservice [Member]
Net sales	294.9		282.8		584.2		557.7
Net Sales	294.9		282.8		584.2		557.7
International [Member]
Net sales	279.6		258.7		539.8		492.2
Net Sales	$ 279.6		$ 258.7		$ 539.8		$ 492.2