Goodwill and Other Intangible Assets (Schedule of changes in the carrying amount of goodwill) (Details) $ in Millions	6 Months Ended
	Nov. 29, 2020 USD ($)
Goodwill [Line Items]
Beginning balance	$ 13,923.2
Other activity, primarily foreign currency translation	97.2
Ending balance	14,020.4
North America Retail [Member]
Goodwill [Line Items]
Beginning balance	6,403.7
Other activity, primarily foreign currency translation	6.8
Ending balance	6,410.5
Pet [Member]
Goodwill [Line Items]
Beginning balance	5,300.5
Other activity, primarily foreign currency translation	0.0
Ending balance	5,300.5
Convenience Stores & Foodservice [Member]
Goodwill [Line Items]
Beginning balance	918.8
Other activity, primarily foreign currency translation	0.0
Ending balance	918.8
Europe & Australia [Member]
Goodwill [Line Items]
Beginning balance	690.7
Other activity, primarily foreign currency translation	53.9
Ending balance	744.6
Asia & Latin America [Member]
Goodwill [Line Items]
Beginning balance	203.8
Other activity, primarily foreign currency translation	5.0
Ending balance	208.8
Joint Ventures [Member]
Goodwill [Line Items]
Beginning balance	405.7
Other activity, primarily foreign currency translation	31.5
Ending balance	$ 437.2