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Acquisitions and Divestitures - Summary of Allocation of Total Purchase Consideration (Details)
$ in Millions
6 Months Ended
Jan. 25, 2020
USD ($)
acquisition
Business Combinations [Abstract]  
Number of acquisitions | acquisition 4
Purchase Consideration $ 182
Net Tangible Assets Acquired (Liabilities Assumed) (9)
Purchased Intangible Assets 108
Goodwill $ 83