Document and Company Information	9 Months Ended
	Dec. 03, 2011	Jan. 06, 2012
Document and Company Information [Abstract]
Entity Registrant Name	SUPERVALU INC
Entity Central Index Key	0000095521
Document Type	10-Q
Document Period End Date	Dec. 03, 2011
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--02-25
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		212,268,084