Document and Entity Information - shares	3 Months Ended
	Oct. 27, 2018	Nov. 15, 2018
Document Documentand Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 27, 2018
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2019
Trading Symbol	CSCO
Entity Registrant Name	CISCO SYSTEMS, INC.
Entity Central Index Key	0000858877
Current Fiscal Year End Date	--07-27
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding (in shares)		4,495,961,730