v2.4.0.6

Summary of Significant Accounting Policies (Depreciation Period By Type Of Assets) (Detail) | 12 Months Ended
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Jul. 28, 2012 Year
Summary Of Significant Accounting Policies [Line Items] |
Leasehold improvements, maximum useful life (in years) | 5
Minimum |
Summary Of Significant Accounting Policies [Line Items] |
Computer equipment and related software | 30
Maximum |
Summary Of Significant Accounting Policies [Line Items] |
Computer equipment and related software | 36
Operating lease assets based on lease term, years | 3
Building improvements |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment, maximum useful life, years | 25
Leasehold improvements |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment, maximum useful life, years | 10
Furniture and fixtures |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment, maximum useful life, years | 5
Production Engineering And Other Equipment |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment, maximum useful life, years | 5

X
- Definition Computer equipment and related software useful life in month. + References No definition available. + Details
Name: | csco_ComputerEquipmentAndRelatedSoftwareUsefulLifeInMonth
Namespace Prefix: | csco_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lease improvements shorter of remaining lease term. + References No definition available. + Details
Name: | csco_LeaseImprovementsShorterOfRemainingLeaseTerm
Namespace Prefix: | csco_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating lease assets based on lease term. + References No definition available. + Details
Name: | csco_OperatingLeaseAssetsBasedOnLeaseTerm
Namespace Prefix: | csco_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | csco_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | csco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The average useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLifeAverage
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration