v2.4.1.9

Goodwill and Purchased Intangible Assets (Additional Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 25, 2015	Apr. 26, 2014	Apr. 25, 2015	Apr. 26, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Impairment charges, measured on a nonrecurring basis	$ 1us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill	$ 0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill	$ 57us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill	$ 0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill

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X

- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

+ 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 350

-SubTopic 30

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275

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