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Goodwill And Purchased Intangible Assets (Schedule Of Amortization Of Purchased Intangible Assets) (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
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Oct. 26, 2013
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Oct. 27, 2012
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| Acquired Finite-Lived Intangible Assets [Line Items] | ||
| Amortization of Purchased Intangible Assets | $ 65 | $ 122 |
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Cost of Sales [Member]
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| Acquired Finite-Lived Intangible Assets [Line Items] | ||
| Amortization of Purchased Intangible Assets | 174 | 143 |
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Operating Expenses [Member]
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| Acquired Finite-Lived Intangible Assets [Line Items] | ||
| Amortization of Purchased Intangible Assets | 65 | 122 |
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Cost of Sales and Operating Expenses [Member]
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| Acquired Finite-Lived Intangible Assets [Line Items] | ||
| Amortization of Purchased Intangible Assets | $ 239 | $ 265 |