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Acquisitions and Divestitures - Additional Information (Details)
$ in Millions
12 Months Ended
Jul. 30, 2022
USD ($)
acquisition
Jul. 31, 2021
USD ($)
Jul. 25, 2020
USD ($)
acquisition
Business Acquisition [Line Items]      
Number of business combinations (acquisition) | acquisition 3   6
Cash and cash equivalents acquired $ 7 $ 338  
Total purchase consideration 364 7,455 $ 359
General and Administrative Expense      
Business Acquisition [Line Items]      
Total transaction costs $ 50 $ 46 $ 21