v2.4.1.9

Shareholders' Equity (Additional Information) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 25, 2015	Apr. 26, 2014	Apr. 25, 2015	Apr. 26, 2014	Jul. 26, 2014
Class of Stock [Line Items]
Cash dividends paid per common share (in dollars per share)	$ 0.21us-gaap_CommonStockDividendsPerShareCashPaid	$ 0.19us-gaap_CommonStockDividendsPerShareCashPaid	$ 0.59us-gaap_CommonStockDividendsPerShareCashPaid	$ 0.53us-gaap_CommonStockDividendsPerShareCashPaid
Cash dividends declared, per common share			$ 0.59us-gaap_CommonStockDividendsPerShareDeclared	$ 0.53us-gaap_CommonStockDividendsPerShareDeclared
Payments of Dividends			$ 3,017,000,000us-gaap_PaymentsOfDividends	$ 2,784,000,000us-gaap_PaymentsOfDividends
Authorized common stock repurchase amount	97,000,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1		97,000,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1
Remaining authorized repurchase amount	5,300,000,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1		5,300,000,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Shares Paid for Tax Withholding for Share Based Compensation (shares in million)	17us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation	14us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Payments Related to Tax Withholding for Share-based Compensation	415,000,000us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation	345,000,000us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation	415,000,000us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation	345,000,000us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Stock repurchase program
Class of Stock [Line Items]
Accrued Liabilities, Current	$ 30,000,000us-gaap_AccruedLiabilitiesCurrent / us-gaap_ShareRepurchaseProgramAxis = csco_StockrepurchaseprogramMember		$ 30,000,000us-gaap_AccruedLiabilitiesCurrent / us-gaap_ShareRepurchaseProgramAxis = csco_StockrepurchaseprogramMember		$ 126,000,000us-gaap_AccruedLiabilitiesCurrent / us-gaap_ShareRepurchaseProgramAxis = csco_StockrepurchaseprogramMember

X

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within 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

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-Paragraph 1

-Subparagraph (SX 210.5-02.20)

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- Details

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X

- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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- Definition

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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- Definition

Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

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- Definition

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

+ References

No definition available.

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

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