v2.4.1.9

Borrowings (Schedule Of Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 25, 2015 | Jul. 26, 2014
Debt Instrument [Line Items] |  |
Total | $ 20,251 us-gaap_DebtInstrumentCarryingAmount | $ 20,754 us-gaap_DebtInstrumentCarryingAmount
Unaccreted discount | (59)us-gaap_DebtInstrumentUnamortizedDiscount | (63)us-gaap_DebtInstrumentUnamortizedDiscount
Hedge accounting fair value adjustments | 308 csco_HedgeAccountingAdjustmentOfCarryingAmountOfNotes | 210 csco_HedgeAccountingAdjustmentOfCarryingAmountOfNotes
Total | 20,500 us-gaap_LongTermDebt | 20,901 us-gaap_LongTermDebt
Current portion of long-term debt | 3,914 us-gaap_LongTermDebtCurrent | 500 us-gaap_LongTermDebtCurrent
Long-term debt | 16,586 us-gaap_LongTermDebtNoncurrent | 20,401 us-gaap_LongTermDebtNoncurrent
Floating Rate Notes 3-month Libor Plus 0.05% Due September 2015 [Member] |  |
Debt Instrument [Line Items] |  |
Maturity Date | Sep. 03, 2015 | Sep. 03, 2015
Notes | 850 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.05DueSeptember2015Member | 850 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.05DueSeptember2015Member
Effective Rate | 0.41%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.05DueSeptember2015Member | 0.35%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.05DueSeptember2015Member
Three-month LIBOR plus this Percentage (in %) | 0.05%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.05DueSeptember2015Member | 0.05%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.05DueSeptember2015Member
Floating Rate Notes 3-month Libor Plus 0.28% Due March 2017 [Member] |  |
Debt Instrument [Line Items] |  |
Maturity Date | Mar. 03, 2017 | Mar. 03, 2017
Notes | 1,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.28DueMarch2017Member | 1,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.28DueMarch2017Member
Effective Rate | 0.61%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.28DueMarch2017Member | 0.56%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.28DueMarch2017Member
Three-month LIBOR plus this Percentage (in %) | 0.28%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.28DueMarch2017Member | 0.28%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = csco_FloatingRateNotes3monthLiborPlus0.28DueMarch2017Member
Floating rate notes 3-month Libor plus 0.5% due March 2019 [Member] |  |
Debt Instrument [Line Items] |  |
Maturity Date | Mar. 01, 2019 | Mar. 01, 2019
Notes | 500 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_Floatingratenotes3monthLiborplus0.5dueMarch2019Member | 500 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_Floatingratenotes3monthLiborplus0.5dueMarch2019Member
Effective Rate | 0.82%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_Floatingratenotes3monthLiborplus0.5dueMarch2019Member | 0.78%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_Floatingratenotes3monthLiborplus0.5dueMarch2019Member
Three-month LIBOR plus this Percentage (in %) | 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = csco_Floatingratenotes3monthLiborplus0.5dueMarch2019Member | 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = csco_Floatingratenotes3monthLiborplus0.5dueMarch2019Member
Fixed-Rate Notes, 2.90%, Due November 2014 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Nov. 17, 2014 | Nov. 17, 2014
Notes | 0 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes2.90dueNovember2014Member | 500 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes2.90dueNovember2014Member
Debt Instrument, Interest Rate, Stated Percentage |  | 2.90%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes2.90dueNovember2014Member
Effective Rate |  | 3.11%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes2.90dueNovember2014Member
Fixed-Rate Notes, 5.5%, Due February 2016 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Feb. 22, 2016 | Feb. 22, 2016
Notes | 3,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FIxedratenotes5.5dueFebruary2016Member | 3,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FIxedratenotes5.5dueFebruary2016Member
Debt Instrument, Interest Rate, Stated Percentage | 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FIxedratenotes5.5dueFebruary2016Member | 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FIxedratenotes5.5dueFebruary2016Member
Effective Rate | 3.06%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FIxedratenotes5.5dueFebruary2016Member | 3.04%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FIxedratenotes5.5dueFebruary2016Member
Fixed-Rate Notes, 1.1%, Due March 2017 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Mar. 03, 2017 | Mar. 03, 2017
Notes | 2,400 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes1.1dueMarch2017Member | 2,400 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes1.1dueMarch2017Member
Debt Instrument, Interest Rate, Stated Percentage | 1.10%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes1.1dueMarch2017Member | 1.10%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes1.1dueMarch2017Member
Effective Rate | 0.58%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes1.1dueMarch2017Member | 0.56%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes1.1dueMarch2017Member
Fixed-Rate Notes, 3.15%, Due March 2017 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Mar. 14, 2017 | Mar. 14, 2017
Notes | 750 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes3.15dueMarch2017Member | 750 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes3.15dueMarch2017Member
Debt Instrument, Interest Rate, Stated Percentage | 3.15%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes3.15dueMarch2017Member | 3.15%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes3.15dueMarch2017Member
Effective Rate | 0.83%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes3.15dueMarch2017Member | 0.79%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_Fixedratenotes3.15dueMarch2017Member
Fixed-Rate Notes, 4.95%, Due February 2019 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Feb. 15, 2019 | Feb. 15, 2019
Notes | 2,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.95DueFebruary2019Member | 2,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.95DueFebruary2019Member
Debt Instrument, Interest Rate, Stated Percentage | 4.95%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.95DueFebruary2019Member | 4.95%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.95DueFebruary2019Member
Effective Rate | 4.69%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.95DueFebruary2019Member | 4.69%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.95DueFebruary2019Member
Fixed-Rate Notes, 2.125%, Due March 2019 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Mar. 01, 2019 | Mar. 01, 2019
Notes | 1,750 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.125DueMarch2019Member | 1,750 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.125DueMarch2019Member
Debt Instrument, Interest Rate, Stated Percentage | 2.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.125DueMarch2019Member | 2.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.125DueMarch2019Member
Effective Rate | 0.79%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.125DueMarch2019Member | 0.77%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.125DueMarch2019Member
Fixed-Rate Notes, 4.45%, Due January 2020 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Jan. 15, 2020 | Jan. 15, 2020
Notes | 2,500 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.45DueJanuary2020Member | 2,500 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.45DueJanuary2020Member
Debt Instrument, Interest Rate, Stated Percentage | 4.45%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.45DueJanuary2020Member | 4.45%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.45DueJanuary2020Member
Effective Rate | 3.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.45DueJanuary2020Member | 2.98%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes4.45DueJanuary2020Member
Fixed-Rate Notes, 2.90%, Due March 2021 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Mar. 04, 2021 | Mar. 04, 2021
Notes | 500 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.9DueMarch2021Member | 500 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.9DueMarch2021Member
Debt Instrument, Interest Rate, Stated Percentage | 2.90%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.9DueMarch2021Member | 2.90%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.9DueMarch2021Member
Effective Rate | 0.95%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.9DueMarch2021Member | 0.93%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes2.9DueMarch2021Member
Fixed-Rate Notes,3.625%, Due March 2024 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Mar. 04, 2024 | Mar. 04, 2024
Notes | 1,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes3.625DueMarch2024Member | 1,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes3.625DueMarch2024Member
Debt Instrument, Interest Rate, Stated Percentage | 3.625%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes3.625DueMarch2024Member | 3.625%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes3.625DueMarch2024Member
Effective Rate | 1.07%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes3.625DueMarch2024Member | 1.05%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes3.625DueMarch2024Member
Fixed-Rate Notes, 5.9%, Due February 2039 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Feb. 15, 2039 | Feb. 15, 2039
Notes | 2,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.9DueFebruary2039Member | 2,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.9DueFebruary2039Member
Debt Instrument, Interest Rate, Stated Percentage | 5.90%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.9DueFebruary2039Member | 5.90%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.9DueFebruary2039Member
Effective Rate | 6.11%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.9DueFebruary2039Member | 6.11%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.9DueFebruary2039Member
Fixed-Rate Notes, 5.5%, Due January 2040 |  |
Debt Instrument [Line Items] |  |
Maturity Date | Jan. 15, 2040 | Jan. 15, 2040
Notes | 2,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.5DueJanuary2040Member | 2,000 us-gaap_SeniorNotes / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.5DueJanuary2040Member
Debt Instrument, Interest Rate, Stated Percentage | 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.5DueJanuary2040Member | 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.5DueJanuary2040Member
Effective Rate | 5.67%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.5DueJanuary2040Member | 5.67%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = csco_FixedRateNotes5.5DueJanuary2040Member
Other long-term debt |  |
Debt Instrument [Line Items] |  |
Other long-term debt | $ 1 us-gaap_OtherLongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember | $ 4 us-gaap_OtherLongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember
Effective Rate | 2.08%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember | 2.39%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember

X
- Definition Hedge accounting adjustment of the carrying amount of the 2011 and 2016 Notes + References No definition available. + Details
Name: | csco_HedgeAccountingAdjustmentOfCarryingAmountOfNotes
Namespace Prefix: | csco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentMaturityDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
Name: | us-gaap_LongTermDebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
Name: | us-gaap_LongTermDebtNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
Name: | us-gaap_OtherLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
Name: | us-gaap_SeniorNotes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_Fixedratenotes1.1dueMarch2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FixedRateNotes2.125DueMarch2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_Fixedratenotes2.90dueNovember2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FixedRateNotes2.9DueMarch2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_Fixedratenotes3.15dueMarch2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FixedRateNotes3.625DueMarch2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FixedRateNotes4.45DueJanuary2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FixedRateNotes4.95DueFebruary2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FIxedratenotes5.5dueFebruary2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FixedRateNotes5.5DueJanuary2040Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FixedRateNotes5.9DueFebruary2039Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FloatingRateNotes3monthLiborPlus0.05DueSeptember2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_FloatingRateNotes3monthLiborPlus0.28DueMarch2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=csco_Floatingratenotes3monthLiborplus0.5dueMarch2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_NotesPayableOtherPayablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |