Document and Entity Information Document - USD ($)	12 Months Ended
	Jul. 01, 2017	Jul. 28, 2017	Dec. 30, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	AVNET INC
Entity Central Index Key	0000008858
Document Type	10-K
Document Period End Date	Jul. 01, 2017
Current Fiscal Year End Date	--07-01
Amendment Flag	false
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 6,069,247,576
Entity Common Stock, Shares Outstanding		123,063,587