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Acquisitions and Divestitures (Tables)
 6 Months Ended
Jan. 27, 2018
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
Viptela
$
497

 
$
(18
)
 
$
180

 
$
335

Springpath
248

 
(11
)
 
160

 
99

Others (three in total)
43

 
(2
)
 
21

 
24

Total
$
788

 
$
(31
)
 
$
361

 
$
458