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