Goodwill and Other Intangible Assets (Schedule of changes in the carrying amount of goodwill) (Details) $ in Millions	9 Months Ended
	Feb. 27, 2022 USD ($)
Goodwill [Line Items]
Beginning balance	$ 14,062.4
Acquisition	762.3
Divestitures	(198.8)
Other activity, primarily foreign currency translation	(79.2)
Ending balance	14,546.7
North America Retail [Member]
Goodwill [Line Items]
Beginning balance	6,689.3
Acquisition	0.0
Divestitures	0.0
Other activity, primarily foreign currency translation	(6.3)
Ending balance	6,683.0
Pet [Member]
Goodwill [Line Items]
Beginning balance	5,300.5
Acquisition	762.3
Divestitures	0.0
Other activity, primarily foreign currency translation	0.0
Ending balance	6,062.8
North America Foodservice [Member]
Goodwill [Line Items]
Beginning balance	648.8
Acquisition	0.0
Divestitures	0.0
Other activity, primarily foreign currency translation	0.0
Ending balance	648.8
Europe & Australia [Member]
Goodwill [Line Items]
Beginning balance	978.2
Acquisition	0.0
Divestitures	(198.8)
Other activity, primarily foreign currency translation	(39.1)
Ending balance	740.3
Joint Ventures [Member]
Goodwill [Line Items]
Beginning balance	445.6
Acquisition	0.0
Divestitures	0.0
Other activity, primarily foreign currency translation	(33.8)
Ending balance	$ 411.8