Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2023	Jan. 29, 2022	Jan. 28, 2023	Jan. 29, 2022	Jul. 30, 2022
Disaggregation of Revenue [Line Items]
Allowance for future sales returns	$ 40		$ 40		$ 43
Payment terms			30 days
Accounts receivable, net	5,237		$ 5,237		6,622
Deferred revenue	23,927		23,927		23,264
Revenue recognized	3,400		7,900
Total deferred sales commissions	1,000		1,000		1,000
Amortization of sales commissions, expense	201	$ 147	377	$ 317
Software and Service Agreements
Disaggregation of Revenue [Line Items]
Contract assets, net of allowances	$ 1,400		$ 1,400		$ 1,300