Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 25, 2025	Jan. 27, 2024	Jan. 25, 2025	Jan. 27, 2024	Jul. 27, 2024
Disaggregation of Revenue [Line Items]
Allowance for future sales returns	$ 42		$ 42		$ 37
Payment terms			30 days
Accounts receivable, net	5,669		$ 5,669		6,685
Deferred revenue	27,795		27,795		28,475
Amortization of sales commissions, expense	238	$ 166	446	$ 324
Revenue recognized	4,400		9,700
Total deferred sales commissions	1,500		1,500		1,300
Software and Service Agreements
Disaggregation of Revenue [Line Items]
Contract assets, net of allowances	$ 2,900		$ 2,900		$ 2,700