Document and Entity Information	9 Months Ended
	May 03, 2014	May 30, 2014
Document and Entity Information
Entity Registrant Name	UNITED NATURAL FOODS INC
Entity Central Index Key	0001020859
Current Fiscal Year End Date	--08-02
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	May 03, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		49,651,214