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Goodwill And Purchased Intangible Assets (Schedule Of Estimated Future Amortization Expense Of Purchased Intangible Assets) (Detail) (USD $)
In Millions, unless otherwise specified
Jan. 25, 2014
Jul. 27, 2013
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2014 (remaining six months) $ 517  
2015 952  
2016 721  
2017 545  
2018 391  
Thereafter 423  
Total Purchased intangible assets, net $ 3,549 $ 3,317