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Business Combinations (Tables)
 3 Months Ended
Oct. 26, 2013
Business Combinations [Abstract]  
Schedule of Business Acquisitions, by Acquisition
A summary of the allocation of the total purchase consideration is presented as follows (in millions):
 
Purchase Consideration
 
Net Tangible Assets Acquired (Liabilities Assumed)
 
Purchased Intangible Assets
 
Goodwill
Sourcefire, Inc.
$
2,449

 
$
81

 
$
577

 
$
1,791

Composite Software, Inc.
160

 
(10
)
 
75

 
95

   Total
$
2,609

 
$
71

 
$
652

 
$
1,886