DOCUMENT AND ENTITY INFORMATION - shares	9 Months Ended
	Feb. 24, 2019	Mar. 11, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Feb. 24, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--05-26
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 Common Stock, Shares Outstanding		598,790,681
Entity Small Business	false
Entity Emerging Growth Company	false