Document and Company Information	4 Months Ended
	Jun. 16, 2012	Jul. 13, 2012
Document and Company Information [Abstract]
Entity Registrant Name	SUPERVALU INC
Entity Central Index Key	0000095521
Document Type	10-Q
Document Period End Date	Jun. 16, 2012
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--02-23
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		213,675,554