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Basis of Presentation and Reclassifications (Details)	12 Months Ended
Basis of Presentation and Reclassifications (Details)	May 28, 2017	May 29, 2016	May 31, 2015
Annual Reporting Period	364 days	364 days	371 days
General Mills Brasil Alimentos Ltda (Yoki) [Member] \| Asia and Latin America [Member]
Annual Reporting Period	13 months
Yoplait SAS [Member] \| Europe and Australia [Member]
Annual Reporting Period		13 months
Yoplait Marques SNC [Member] \| Europe and Australia [Member]
Annual Reporting Period		13 months
Annie's, Inc [Member] \| North America Retail [Member]
Annual Reporting Period		13 months