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