Business Segment And Geographic Information (Operating Segment Results) (Details) - USD ($) $ in Millions	3 Months Ended
Aug. 24, 2025	Aug. 25, 2024
Segment Reporting Information [Line Items]
Net sales	$ 4,517.5	$ 4,848.1
Cost of sales	2,984.7	3,159.3
Selling, general, and administrative expenses	845.1	855.1
Divestitures gain	(1,054.4)	0.0
Restructuring, impairment, and other exit costs (recoveries)	16.3	2.2
Operating profit	1,725.8	831.5
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	4,512.4	4,845.9
Operating profit	813.4	957.5
Unallocated Corporate Items [Member]
Segment Reporting Information [Line Items]
Net sales	5.1	2.2
Operating profit	125.7	123.8
North America Retail [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	2,625.5	3,016.6
Cost of sales	1,664.5	1,836.4
Selling, general, and administrative expenses	396.8	434.5
Operating profit	564.2	745.7
U.S. Meals & Baking Solutions [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	921.4	946.3
Big G Cereal & Canada [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	866.9	1,159.8
U.S. Snacks [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	837.2	910.5
International [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	760.2	717.0
Cost of sales	538.8	548.3
Selling, general, and administrative expenses	155.7	147.8
Operating profit	65.7	20.9
North America Pet [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	610.0	576.1
Cost of sales	368.6	338.1
Selling, general, and administrative expenses	128.5	118.6
Operating profit	112.9	119.4
North America Foodservice [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	516.7	536.2
Cost of sales	402.3	421.1
Selling, general, and administrative expenses	43.8	43.6
Operating profit	$ 70.6	$ 71.5

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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