Document and Entity Information	3 Months Ended
	May 04, 2012	May 31, 2012
Document And Entity Information
Entity Registrant Name	DOLLAR GENERAL CORP
Entity Central Index Key	0000029534
Document Type	10-Q
Document Period End Date	May 04, 2012
Amendment Flag	false
Current Fiscal Year End Date	--02-01
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		332,326,972
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1