Employee Benefit Plans (Summary of Share-Based Awards available for Grant) (Details) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
Jan. 24, 2015	Jul. 26, 2014
Employee Stock Benefit Plans [Abstract]
Balance at beginning of fiscal period	310	228
Restricted stock, stock units, and other share-based awards granted	(28)	(98)
Share-based awards canceled/forfeited/expired	27	36
Additional shares reserved		135
Shares withheld for taxes and not issued	21csco_Shareswithheldfortaxandnotissued	6csco_Shareswithheldfortaxandnotissued
Other	(2)	3
Balance at end of fiscal period	328	310

Adjustment to Share Based Awards Grants For The Period

No definition available.

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- Definition

Reduction from available for grant share balance due to issuance of stock awards

+ References

No definition available.

+ Details

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- Definition

Shares withheld for tax and not issued

+ References

No definition available.

+ Details

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- Details

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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

+ Details

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

Number of shares (or other type of equity) forfeited during the period.

+ References

No definition available.

+ Details

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