Goodwill and Other Intangible Assets (Schedule of changes in the carrying amount of goodwill) (Details) $ in Millions	9 Months Ended
	Feb. 26, 2017 USD ($)
Goodwill [Line Items]
Beginning balance	$ 8,741.2
Divestiture	(2.3)
Other activity, primarily foreign currency translation	(33.1)
Ending balance	8,705.8
North America Retail [Member]
Goodwill [Line Items]
Beginning balance	6,410.3
Divestiture	0.0
Other activity, primarily foreign currency translation	(0.6)
Ending balance	6,409.7
Convenience Stores and Foodservice [Member]
Goodwill [Line Items]
Beginning balance	921.1
Divestiture	(2.3)
Other activity, primarily foreign currency translation	0.0
Ending balance	918.8
Europe and Australia [Member]
Goodwill [Line Items]
Beginning balance	716.5
Divestiture	0.0
Other activity, primarily foreign currency translation	(50.2)
Ending balance	666.3
Asia and Latin America [Member]
Goodwill [Line Items]
Beginning balance	287.1
Divestiture	0.0
Other activity, primarily foreign currency translation	37.9
Ending balance	325.0
Joint Ventures [Member]
Goodwill [Line Items]
Beginning balance	406.2
Divestiture	0.0
Other activity, primarily foreign currency translation	(20.2)
Ending balance	$ 386.0