Document And Entity Information	6 Months Ended
	Jul. 31, 2013	Sep. 03, 2013
Document And Entity Information [Abstract]
Entity Registrant Name	WAL MART STORES INC
Entity Central Index Key	0000104169
Current Fiscal Year End Date	--01-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jul. 31, 2013
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		3,255,456,108