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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
Oct. 26, 2013
Jul. 27, 2013
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2014 (remaining nine months) $ 764  
2015 934  
2016 704  
2017 530  
2018 380  
Thereafter 419  
Total Purchased intangible assets, net $ 3,731 $ 3,317