DOCUMENT AND ENTITY INFORMATION (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Nov. 25, 2012	Dec. 07, 2012
Document And Entity Information [Abstract]
Document Type	10-Q
Document period end date	Nov. 25, 2012
Amendment flag	false
Entity registrant name	GENERAL MILLS INC,
Entity central index key	0000040704
Entity current reporting status	Yes
Entity voluntary filers	No
Current fiscal year end date	--05-26
Entity filer category	Large Accelerated Filer
Entity well known seasoned issuer	Yes
Entity common stock shares outstanding		646,595,998
Entity public float	$ 26,330.2
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2