Brazilian authority claim of import tax evasion by importer, interest portion

No definition available.

Name:	csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterInterestPortion
Namespace Prefix:	csco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Brazilian authority claim of import tax evasion by importer penalties portion

+ References

No definition available.

+ Details

Name:	csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterPenaltiesPortion
Namespace Prefix:	csco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Brazilian authority claim of import tax evasion by importer, tax portion

+ References

No definition available.

+ Details

Name:	csco_BrazilianAuthorityClaimOfImportTaxEvasionByImporterTaxPortion
Namespace Prefix:	csco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Channel Partner Financing Revolving Short Term Financing Payment Term Days

+ References

No definition available.

+ Details

Name:	csco_ChannelPartnerFinancingRevolvingShortTermFinancingPaymentTermDays
Namespace Prefix:	csco_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Channel Partner Financing Subject To Guarantees

+ References

No definition available.

+ Details

Name:	csco_ChannelPartnerFinancingSubjectToGuarantees
Namespace Prefix:	csco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Channel Partner Financing Volume, Gross Billings

+ References

No definition available.

+ Details

Name:	csco_ChannelPartnerFinancingVolumeGrossBillings
Namespace Prefix:	csco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

End user lease and loan (with registrant guarantee) term.

+ References

No definition available.

+ Details

Name:	csco_EndUserLeaseAndLoanTerm
Namespace Prefix:	csco_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Estimated future cash compensation expense (maximum amount)

+ References

No definition available.

+ Details

Name:	csco_Estimatedfuturecashcompensationexpensemaximumamount
Namespace Prefix:	csco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Loss Contingency Damages Awarded, Post Judgment Interest, Percent

+ References

No definition available.

+ Details

Name:	csco_LossContingencyDamagesAwardedPostJudgmentInterestPercent
Namespace Prefix:	csco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Loss Contingency Damages Sought, Pre-Judgment Interest, Value

+ References

No definition available.

+ Details

Name:	csco_LossContingencyDamagesSoughtPreJudgmentInterestValue
Namespace Prefix:	csco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Loss Contingency, Number of Defendants, Other Defendants

+ References

No definition available.

+ Details

Name:	csco_LossContingencyNumberofDefendantsOtherDefendants
Namespace Prefix:	csco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Loss Contingency, Royalty Awarded, Percent

+ References

No definition available.

+ Details

Name:	csco_LossContingencyRoyaltyAwardedPercent
Namespace Prefix:	csco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Third Parties Financing Arrangements With Company Guarantee

+ References

No definition available.

+ Details

Name:	csco_ThirdPartiesFinancingArrangementsWithCompanyGuarantee
Namespace Prefix:	csco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Warranty period for products.

+ References

No definition available.

+ Details

Name:	csco_WarrantyPeriodForProducts
Namespace Prefix:	csco_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.(a),19)
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.17)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

+ Details

Name:	us-gaap_CommitmentsAndContingencies
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

No definition available.

+ Details

Name:	us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of damages awarded to the plaintiff in the legal matter.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

+ Details

Name:	us-gaap_LossContingencyDamagesAwardedValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of damages paid to the plaintiff in the legal matter.

+ References

+ Details

Name:	us-gaap_LossContingencyDamagesPaidValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of another entity's patents that the entity has allegedly infringed.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingencyPatentsAllegedlyInfringedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of another entity's patents that the entity was found to have infringed.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingencyPatentsFoundInfringedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SiteContingencyLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_LitigationCaseAxis=csco_SRIInternationalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=csco_OysterOpticsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=csco_PatentInfringementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=csco_SprintCommunicationsCompanyL.P.Vs.TimeWarnerCableInc.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=csco_InvestmentsInPrivatelyHeldCompaniesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingencies - Additional Information (Details) $ in Millions								3 Months Ended		41 Months Ended
	Nov. 04, 2018 defendant	May 30, 2017 USD ($)	May 25, 2017 USD ($)	Mar. 14, 2017 USD ($)	Mar. 03, 2017 USD ($) patent	May 12, 2016 USD ($)	Sep. 04, 2013 patent	Oct. 26, 2019 USD ($)	Oct. 27, 2018 USD ($)	Oct. 26, 2019 USD ($)	Jul. 27, 2019 USD ($)
Contingency [Line Items]
Liability for purchase commitments								$ 121.0		$ 121.0	$ 129.0
Future compensation expense & contingent consideration (up to)								430.0		430.0
Commitments and contingencies
Volume of channel partner financing								7,600.0	$ 7,200.0
Balance of the channel partner financing subject to guarantees								1,200.0		1,200.0	1,400.0
Financing provided by third parties for leases and loans on which the Company has provided guarantees								5.0	$ 3.0
Brazilian authority claim of import tax evasion by importer tax portion								202.0		202.0
Brazilian authority claim of import tax evasion by importer interest portion								1,400.0		1,400.0
Brazilian authority claim of import tax evasion by importer penalties portion								$ 900.0		900.0
SRI International \| Pending Litigation
Contingency [Line Items]
Damages awarded, value			$ 57.0			$ 23.7
Payment										28.1
Number of allegedly infringed patents (patent) \| patent							2
Percentage of royalty awarded			3.50%
Oyster Optics \| Pending Litigation
Contingency [Line Items]
Number remaining defendants, other than Cisco \| defendant	1
Patent Infringement \| Sprint Communications Company, L.P. vs. Time Warner Cable, Inc. \| Pending Litigation
Contingency [Line Items]
Number of patents found infringed (patent) \| patent					5
Damages awarded, value				$ 139.8	$ 139.8
Percentage of post-judgment interest awarded				1.06%
Pre-judgment interest requested		$ 20.3
Minimum
Contingency [Line Items]
Warranty period for products								90 days
Channel partners revolving short-term financing payment term								60 days
Maximum
Contingency [Line Items]
Warranty period for products								5 years
Channel partners revolving short-term financing payment term								90 days
End user lease and loan term								3 years
Investments in privately held companies (impaired)
Contingency [Line Items]
Commitments and contingencies								$ 311.0		$ 311.0	$ 326.0