Cover Page - shares	6 Months Ended
Nov. 23, 2025	Dec. 10, 2025
Entity Listings [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Nov. 23, 2025
Document Transition Report	false
Entity File Number	001-01185
Entity Registrant Name	GENERAL MILLS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	41-0274440
Entity Address, Address Line One	Number One General Mills Boulevard
Entity Address, City or Town	Minneapolis
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55426
City Area Code	763
Local Phone Number	764-7600
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		533,582,081
Current Fiscal Year End Date	--05-31
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Central Index Key	0000040704
Common Stock
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock, $.10 par value
Trading Symbol	GIS
Security Exchange Name	NYSE
0.450% Notes due 2026
Entity Listings [Line Items]
Title of 12(b) Security	0.450% Notes due 2026
Trading Symbol	GIS 26
Security Exchange Name	NYSE
1.500% Notes due 2027
Entity Listings [Line Items]
Title of 12(b) Security	1.500% Notes due 2027
Trading Symbol	GIS 27
Security Exchange Name	NYSE
3.907% Notes due 2029
Entity Listings [Line Items]
Title of 12(b) Security	3.907% Notes due 2029
Trading Symbol	GIS 29
Security Exchange Name	NYSE
3.650% Notes due 2030
Entity Listings [Line Items]
Title of 12(b) Security	3.650% Notes due 2030
Trading Symbol	GIS 30A
Security Exchange Name	NYSE
3.600% Notes due 2032
Entity Listings [Line Items]
Title of 12(b) Security	3.600% Notes due 2032
Trading Symbol	GIS 32
Security Exchange Name	NYSE
3.850% Notes due 2034
Entity Listings [Line Items]
Title of 12(b) Security	3.850% Notes due 2034
Trading Symbol	GIS 34
Security Exchange Name	NYSE

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