v2.4.1.9

Commitments and Contingencies (Additional Information) (Details) (USD $) | 3 Months Ended | 9 Months Ended | 3 Months Ended | 21 Months Ended | 3 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Apr. 25, 2015 | Apr. 26, 2014 | Apr. 25, 2015 | Apr. 26, 2014 | Oct. 25, 2014 | Apr. 28, 2012 | Apr. 25, 2015 | Jan. 25, 2014 | Jul. 26, 2014
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Purchase Commitments | $ 4,495,000,000 us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted |  | $ 4,495,000,000 us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted |  |  |  | $ 4,495,000,000 us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted |  | $ 4,169,000,000 us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
Liability for purchase commitments | 153,000,000 us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability |  | 153,000,000 us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability |  |  |  | 153,000,000 us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability |  | 162,000,000 us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability
Future compensation expense & contingent consideration, maximum | 366,000,000 csco_Estimatedfuturecashcompensationexpensemaximumamount |  | 366,000,000 csco_Estimatedfuturecashcompensationexpensemaximumamount |  |  |  | 366,000,000 csco_Estimatedfuturecashcompensationexpensemaximumamount |  |
Commitments and contingencies |  |  |  |  |  |  |  |  |
Volume of channel partner financing | 6,300,000,000 us-gaap_GrossTransactionVolume | 5,800,000,000 us-gaap_GrossTransactionVolume | 19,000,000,000 us-gaap_GrossTransactionVolume | 17,900,000,000 us-gaap_GrossTransactionVolume |  |  |  |  |
Balance of the channel partner financing subject to guarantees | 1,200,000,000 csco_ChannelPartnerFinancingSubjectToGuarantees |  | 1,200,000,000 csco_ChannelPartnerFinancingSubjectToGuarantees |  |  |  | 1,200,000,000 csco_ChannelPartnerFinancingSubjectToGuarantees |  | 1,200,000,000 csco_ChannelPartnerFinancingSubjectToGuarantees
Financing provided by third parties for leases and loans on which the Company has provided guarantees | 22,000,000 csco_ThirdPartiesFinancingArrangementsWithCompanyGuarantee | 44,000,000 csco_ThirdPartiesFinancingArrangementsWithCompanyGuarantee | 87,000,000 csco_ThirdPartiesFinancingArrangementsWithCompanyGuarantee | 89,000,000 csco_ThirdPartiesFinancingArrangementsWithCompanyGuarantee |  |  |  |  |
Cost of Goods Sold (Adjustment) | 3,584,000,000 us-gaap_CostOfGoodsSold | 3,595,000,000 us-gaap_CostOfGoodsSold | 11,309,000,000 us-gaap_CostOfGoodsSold | 11,665,000,000 us-gaap_CostOfGoodsSold |  |  |  |  |
Brazilian Authority Claim Of Import Tax Evasion By Importer Tax Portion | 291,000,000 csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterTaxPortion |  | 291,000,000 csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterTaxPortion |  |  |  | 291,000,000 csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterTaxPortion |  |
Brazilian Authority Claim Of Import Tax Evasion By Importer Interest Portion | 1,100,000,000 csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterInterestPortion |  | 1,100,000,000 csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterInterestPortion |  |  |  | 1,100,000,000 csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterInterestPortion |  |
Brazilian Authority Claim Of Import Tax Evasion By Importer Penalties Portion | 1,300,000,000 csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterPenaltiesPortion |  | 1,300,000,000 csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterPenaltiesPortion |  |  |  | 1,300,000,000 csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterPenaltiesPortion |  |
Minimum |  |  |  |  |  |  |  |  |
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Warranty period for products, in days | 90 days |  |  |  |  |  |  |  |
Channel partners revolving short-term financing payment term, in days | 60 days |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Warranty period for products, in years | 5 years |  |  |  |  |  |  |  |
Channel partners revolving short-term financing payment term, in days | 90 days |  |  |  |  |  |  |  |
End User Lease And Loan Term, in years | 3 years |  |  |  |  |  |  |  |
Insieme Networks Inc |  |  |  |  |  |  |  |  |
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Variable Interest Entities Investment |  |  |  |  |  | 100,000,000 us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember |  |  |
Ownership percentage as a result of investment |  |  |  |  | 83.00%us-gaap_VariableInterestEntityOwnershipPercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember |  |  |  |
Compensation expense related to acquisitions | 51,000,000 us-gaap_LaborAndRelatedExpense / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember | 52,000,000 us-gaap_LaborAndRelatedExpense / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember | 155,000,000 us-gaap_LaborAndRelatedExpense / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember | 363,000,000 us-gaap_LaborAndRelatedExpense / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember |  |  | 571,000,000 us-gaap_LaborAndRelatedExpense / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember |  |
Insieme Networks Inc | Maximum | Including compensation that has been expensed through current reporting period [Member] |  |  |  |  |  |  |  |  |
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Commitments and contingencies | 843,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_NatureOfExpenseAxis = csco_IncludingcompensationthathasbeenexpensedthroughcurrentreportingperiodMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember |  | 843,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_NatureOfExpenseAxis = csco_IncludingcompensationthathasbeenexpensedthroughcurrentreportingperiodMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember |  |  |  | 843,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_NatureOfExpenseAxis = csco_IncludingcompensationthathasbeenexpensedthroughcurrentreportingperiodMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InsiemeNetworksIncMember |  |
Investments In Privately Held Companies |  |  |  |  |  |  |  |  |
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Commitments and contingencies | 247,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InvestmentsInPrivatelyHeldCompaniesMember |  | 247,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InvestmentsInPrivatelyHeldCompaniesMember |  |  |  | 247,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InvestmentsInPrivatelyHeldCompaniesMember |  | 255,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_InvestmentsInPrivatelyHeldCompaniesMember
Supplier Component Remediation Liability |  |  |  |  |  |  |  |  |
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Commitments and contingencies | 426,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_SupplierComponentRemediationLiabilityMember |  | 426,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_SupplierComponentRemediationLiabilityMember |  |  |  | 426,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_SupplierComponentRemediationLiabilityMember | 63,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_SupplierComponentRemediationLiabilityMember | 670,000,000 us-gaap_CommitmentsAndContingencies / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_SupplierComponentRemediationLiabilityMember
Cost of Goods Sold (Adjustment) | (164,000,000)us-gaap_CostOfGoodsSold / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_SupplierComponentRemediationLiabilityMember |  |  |  |  |  |  | 655,000,000 us-gaap_CostOfGoodsSold / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_SupplierComponentRemediationLiabilityMember |
Russia and the Commonwealth of Independent States [Member] |  |  |  |  |  |  |  |  |
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Percentage of revenue, Percentage | 2.00%csco_PercentageofrevenuePercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_RussiaandtheCommonwealthofIndependentStatesMember |  |  |  |  |  |  |  |
Rockstar [Member] |  |  |  |  |  |  |  |  |
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Cost of Goods Sold (Adjustment) |  |  |  |  | 188,000,000 us-gaap_CostOfGoodsSold / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_RockstarMember |  |  |  |
Rockstar [Member] | Partially offset to $188 million accrued to Cost of goods sold in Q1'15 |  |  |  |  |  |  |  |  |
Contingency [Line Items] |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value | $ 300,000,000 us-gaap_LossContingencyDamagesAwardedValue / us-gaap_NatureOfExpenseAxis = csco_Included188millionaccruedliabilitytoCostofSalesinQ115Member / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = csco_RockstarMember |  |  |  |  |  |  |  |

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