Loan receivables and financed service contracts and others carrying value.

No definition available.

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

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ 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 FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

+ Details

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

- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_AssetsFairValueDisclosureNonrecurring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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

- Definition

This item represents a financial instrument (as defined) for which it is not practicable to estimate fair value. Such disclosure may be for an individual financial instrument or a class of financial instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=29638263&loc=d3e39828-111592

+ Details

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

- 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

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

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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

- Details

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- Details

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- Details

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

- Details

Name:	us-gaap_MajorPropertyClassAxis=csco_PurchasedIntangibleAssetsMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorPropertyClassAxis=us-gaap_AssetsHeldForSaleMember
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Fair Value (Additional Information) (Details) (USD $)	3 Months Ended		9 Months Ended
Fair Value (Additional Information) (Details) (USD $)	Apr. 25, 2015	Apr. 26, 2014	Apr. 25, 2015	Apr. 26, 2014	Jul. 26, 2014
Fair Value Measurements [Line Items]
Carrying Value, Cost Method Investments	$ 312,000,000		$ 312,000,000		$ 269,000,000
Senior notes, carrying value	20,500,000,000us-gaap_LongTermDebt		20,500,000,000us-gaap_LongTermDebt		20,901,000,000us-gaap_LongTermDebt
Level 2
Fair Value Measurements [Line Items]
Senior notes, fair value	22,200,000,000		22,200,000,000		22,400,000,000
Senior notes, carrying value	20,500,000,000		20,500,000,000		20,900,000,000
Level 3
Fair Value Measurements [Line Items]
Gains (losses) for assets measured on a nonrecurring basis	23,000,000	0	82,000,000	10,000,000
Long term loan receivables and financed service contracts and others carrying value	1,900,000,000		1,900,000,000		2,100,000,000
Investments In Privately Held Companies [Member] \| Remaining net carrying value, measured on a nonrecurring basis [Member] \| Level 3
Fair Value Measurements [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	4,000,000		4,000,000
Purchased Intangible Assets \| Remaining net carrying value, measured on a nonrecurring basis [Member] \| Level 3
Fair Value Measurements [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	0		0
Assets Held-for-sale [Member] \| Remaining net carrying value, measured on a nonrecurring basis [Member] \| Level 3
Fair Value Measurements [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 11,000,000		$ 11,000,000