XML 80 R64.htm IDEA: XBRL DOCUMENT v3.7.0.1
Goodwill and Purchased Intangible Assets (Schedule of Estimated Future Amortization Expense of Purchased Intangible Assets) (Details) - USD ($)
$ in Millions
Jul. 29, 2017
Jul. 30, 2016
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]    
2018 $ 790  
2019 700  
2020 483  
2021 286  
2022 102  
Thereafter 67  
Net $ 2,428 $ 2,279