Document and Entity Information	9 Months Ended
	Oct. 28, 2011	Nov. 30, 2011
Document and Entity Information
Entity Registrant Name	DOLLAR GENERAL CORP
Entity Central Index Key	0000029534
Document Type	10-Q
Document Period End Date	Oct. 28, 2011
Amendment Flag	false
Current Fiscal Year End Date	--02-03
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		342,263,844
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3