Goodwill and Other Intangible Assets (Schedule of at-risk brand intangible assets) (Details) - USD ($) $ in Millions	9 Months Ended
	Feb. 26, 2017	May 29, 2016
Indefinite-lived Intangible Assets [Line Items]
Carrying Value	$ 4,499.7	$ 4,538.6
Latin America {Member}
Indefinite-lived Intangible Assets [Line Items]
Carrying Value	$ 523.0
Excess Fair Value Above Carrying Value, Percentage	15.00%
Immaculate Baking Brand [Member]
Indefinite-lived Intangible Assets [Line Items]
Carrying Value	$ 12.0
Excess Fair Value Above Carrying Value, Percentage	17.00%