DOCUMENT AND ENTITY INFORMATION - USD ($) $ in Millions	12 Months Ended
	May 29, 2016	Jun. 13, 2016	Nov. 27, 2015
Document and Entity Information [Abstract]
Document Type	10-K
Document Period End Date	May 29, 2016
Amendment Flag	false
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--05-29
Entity Central Index Key	0000040704
Trading Symbol	GIS
Entity Registrant Name	GENERAL MILLS INC
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well Known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding		597,020,906
Entity Public Float			$ 34,654.2