Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 29, 2023	Apr. 30, 2022	Apr. 29, 2023	Apr. 30, 2022	Jul. 30, 2022
Disaggregation of Revenue [Line Items]
Allowance for future sales returns	$ 38		$ 38		$ 43
Payment terms			30 days
Accounts receivable, net	5,104		$ 5,104		6,622
Deferred revenue	24,260		24,260		23,264
Revenue recognized	2,700		10,600
Total deferred sales commissions	1,000		1,000		1,000
Amortization of sales commissions, expense	172	$ 175	549	$ 492
Software and Service Agreements
Disaggregation of Revenue [Line Items]
Contract assets, net of allowances	$ 1,400		$ 1,400		$ 1,300