Document and Entity Information - shares	6 Months Ended
	Jan. 27, 2018	Feb. 15, 2018
Document Documentand Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 27, 2018
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2018
Trading Symbol	CSCO
Entity Registrant Name	CISCO SYSTEMS, INC.
Entity Central Index Key	0000858877
Current Fiscal Year End Date	--07-28
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		4,817,517,410