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Goodwill and Purchased Intangible Assets (Schedule Of Purchased Intangible Assets With Finite And Indefinite Lives) (Detail) (USD $) In Millions, unless otherwise specified |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 28, 2012 | Jul. 30, 2011 | Jul. 28, 2012 Technology | Jul. 30, 2011 Technology | Jul. 28, 2012 Customer Relationships | Jul. 30, 2011 Customer Relationships | Jul. 28, 2012 Other | Jul. 30, 2011 Other | Jul. 28, 2012 Total Purchased Intangible Assets With Finite Lives | Jul. 30, 2011 Total Purchased Intangible Assets With Finite Lives | Jul. 30, 2011 In-Process Research & Development
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total purchased intangible assets with finite lives, Gross |  | $ 4,539 | $ 2,267 | $ 1,961 | $ 2,261 | $ 2,277 | $ 49 | $ 123 | $ 4,577 | $ 4,361 |
Total, Accumulated Amortization |  | (1,998) | (908) | (561) | (1,669) | (1,346) | (41) | (91) | (2,618) | (1,998) |
Total purchased intangible assets with finite lives, Net | 1,959 | 2,541 | 1,359 | 1,400 | 592 | 931 | 8 | 32 | 1,959 | 2,363 |
IPR&D, with indefinite lives |  |  |  |  |  |  |  |  |  |  | 178
Total, Accumulated Amortization |  |  |  |  |  |  |  |  |  |  |
IPR&D, with indefinite lives |  |  |  |  |  |  |  |  |  |  | $ 178

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- Definition Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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