v2.4.0.6

Goodwill and Purchased Intangible Assets (Schedule Of Amortization Of Purchased Intangible Assets) (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Jul. 28, 2012 | Jul. 30, 2011 | Jul. 31, 2010
Acquired Intangible Asset Amortization by Statement of Operations Class [Line Items] |  |  |
Amortization of purchased intangible assets | $ 807 | $ 1,020 | $ 768
Cost Of Sales |  |  |
Acquired Intangible Asset Amortization by Statement of Operations Class [Line Items] |  |  |
Amortization of purchased intangible assets | 424 | 492 | 277
Operating Expenses |  |  |
Acquired Intangible Asset Amortization by Statement of Operations Class [Line Items] |  |  |
Amortization of purchased intangible assets | 383 | 520 | 491
Operating Expenses | Restructuring And Other Charges |  |  |
Acquired Intangible Asset Amortization by Statement of Operations Class [Line Items] |  |  |
Amortization of purchased intangible assets |  | $ 8 |

X
- Details
Name: | us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate expense charged against earnings to allocate the cost of acquired intangible assets. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method. + References No definition available. + Details
Name: | us-gaap_AmortizationOfAcquiredIntangibleAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration