Acquisitions and Divestitures - Additional Information (Details) $ in Millions	12 Months Ended
	Jul. 29, 2023 USD ($) acquisition	Jul. 30, 2022 USD ($) acquisition	Jul. 31, 2021 USD ($) acquisition
Business Acquisition [Line Items]
Number of business combinations (acquisition) | acquisition	5	3	13
Cash and cash equivalents acquired	$ 7	$ 7
Total purchase consideration	315	364	$ 7,500
General and Administrative Expense
Business Acquisition [Line Items]
Total transaction costs	$ 26	$ 50	$ 46