Document and Entity Information - USD ($)	12 Months Ended
	Jul. 29, 2017	Sep. 01, 2017	Jan. 27, 2017
Document Documentand Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jul. 29, 2017
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2017
Trading Symbol	CSCO
Entity Registrant Name	CISCO SYSTEMS, INC.
Entity Central Index Key	0000858877
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--07-29
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding		4,951,955,851
Entity Public Float			$ 155,020,814,264