Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Nov. 23, 2025	Nov. 23, 2025	May 25, 2025
Goodwill [Roll Forward]
Beginning balance		$ 15,622.4
Purchase accounting adjustment	$ (32.5)	(32.5)
Other activity, primarily foreign currency translation		11.6
Ending balance	15,601.5	15,601.5
Corporate and Joint Ventures
Goodwill [Roll Forward]
Beginning balance		442.2
Purchase accounting adjustment		0.0
Other activity, primarily foreign currency translation		5.5
Ending balance	447.7	447.7
North America Retail | Operating Segments
Goodwill [Roll Forward]
Beginning balance		6,323.5
Purchase accounting adjustment		0.0
Other activity, primarily foreign currency translation		(2.8)
Ending balance	6,320.7	6,320.7
North America Pet | Operating Segments
Goodwill [Roll Forward]
Beginning balance		7,149.5
Purchase accounting adjustment		(32.5)
Other activity, primarily foreign currency translation		0.0
Ending balance	7,117.0	7,117.0
North America Foodservice | Operating Segments
Goodwill [Roll Forward]
Beginning balance		755.5
Purchase accounting adjustment		0.0
Other activity, primarily foreign currency translation		(0.1)
Ending balance	755.4	755.4
International | Operating Segments
Goodwill [Roll Forward]
Beginning balance		951.7
Purchase accounting adjustment		0.0
Other activity, primarily foreign currency translation		9.0
Ending balance	960.7	960.7
Accumulated impairment losses	$ 117.1	$ 117.1	$ 117.1