v2.4.1.9

Segment Information and Major Customers (Summary Of Net Revenue For Groups Of Similar Products And Services) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 25, 2015	Apr. 26, 2014	Apr. 25, 2015	Apr. 26, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 12,137us-gaap_Revenues	$ 11,545us-gaap_Revenues	$ 36,318us-gaap_Revenues	$ 34,785us-gaap_Revenues
Switching
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	3,560us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_SwitchingMember	3,368us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_SwitchingMember	11,022us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_SwitchingMember	10,366us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_SwitchingMember
NGN Routing
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	1,999us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_NextGenerationNetworksMember	1,925us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_NextGenerationNetworksMember	5,712us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_NextGenerationNetworksMember	5,681us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_NextGenerationNetworksMember
Collaboration
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	973us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_CollaborationMember	909us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_CollaborationMember	2,912us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_CollaborationMember	2,859us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_CollaborationMember
Service Provider Video
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	914us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_ServiceProviderVideoMember	961us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_ServiceProviderVideoMember	2,561us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_ServiceProviderVideoMember	2,905us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_ServiceProviderVideoMember
Data Center
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	801us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_DataCenterMember	662us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_DataCenterMember	2,340us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_DataCenterMember	1,868us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_DataCenterMember
Wireless
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	611us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_WirelessMember	560us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_WirelessMember	1,827us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_WirelessMember	1,624us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_WirelessMember
Security
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	412us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_SecurityMember	361us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_SecurityMember	1,283us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_SecurityMember	1,119us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_SecurityMember
Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	56us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_OtherProductsMember	74us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_OtherProductsMember	182us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_OtherProductsMember	218us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_OtherProductsMember
Product:
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	9,326us-gaap_Revenues / us-gaap_ProductOrServiceAxis = us-gaap_ProductMember	8,820us-gaap_Revenues / us-gaap_ProductOrServiceAxis = us-gaap_ProductMember	27,839us-gaap_Revenues / us-gaap_ProductOrServiceAxis = us-gaap_ProductMember	26,640us-gaap_Revenues / us-gaap_ProductOrServiceAxis = us-gaap_ProductMember
Service
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 2,811us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_ServiceMember	$ 2,725us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_ServiceMember	$ 8,479us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_ServiceMember	$ 8,145us-gaap_Revenues / us-gaap_ProductOrServiceAxis = csco_ServiceMember

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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