Average balance of securities lending.

No definition available.

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

- Definition

Fair value of securities received as collateral that can be resold or repledged percentage.

+ References

No definition available.

+ Details

Name:	csco_FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledgedPercentage
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Period Type:	duration

- Definition

Ownership interest in cost method investment

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	instant

- Definition

Proceeds from convertible notes and accrued interest

+ References

No definition available.

+ Details

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

- Definition

Secured Lending Transactions Outstanding

+ References

No definition available.

+ Details

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

- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ 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 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=29638308&loc=d3e40346-111594

+ Details

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Period Type:	instant

- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 9

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.12)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 7

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

This element represents the amount of loss recognized for other than temporary impairments (OTTI) of investments in debt and equity securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.M)

-URI http://asc.fasb.org/extlink&oid=27011274&loc=d3e87990-122713

+ Details

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Balance Type:	debit
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- Definition

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27340-111563

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Investments (Additional Information) (Details) (USD $)	3 Months Ended		9 Months Ended		69 Months Ended
Investments (Additional Information) (Details) (USD $)	Apr. 25, 2015	Apr. 26, 2014	Apr. 25, 2015	Apr. 26, 2014	Apr. 25, 2015	Jul. 26, 2014	Oct. 25, 2014
Schedule of Investments [Line Items]
Impairment charges on available-for-sale investments	$ 0	$ 0	$ 0	$ 11,000,000
Other than temporary impairment, credit losses recognized in earnings, credit losses on debt securities held	0		0		0
Average daily balance of securities lending			500,000,000csco_AverageBalanceOfSecuritiesLending	1,400,000,000csco_AverageBalanceOfSecuritiesLending
Fair Value Of Securities Received As Collateral That Can Be Resold Or RePledged Percentage			102.00%	102.00%
Secured lending transactions outstanding	0		0		0	0
Cost method investment carrying value	312,000,000us-gaap_CostMethodInvestments		312,000,000us-gaap_CostMethodInvestments		312,000,000us-gaap_CostMethodInvestments	269,000,000us-gaap_CostMethodInvestments
VCE
Schedule of Investments [Line Items]
Cumulative gross investment in VCE	716,000,000		716,000,000		716,000,000
Income (Loss) from Equity Method Investments	0	52,000,000	47,000,000	163,000,000	691,000,000
Proceeds from Sale of Equity Method Investments			152,000,000
Equity Method Investment, Ownership Percentage (in %)							35.00%
Ownership interest in cost method investment (in %)	10.00%		10.00%		10.00%
Cost method investment carrying value	0		0		0
Gains recognized related to restructuring of VCE			$ 126,000,000