Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 26, 2025	Apr. 27, 2024	Apr. 26, 2025	Apr. 27, 2024	Jul. 27, 2024
Disaggregation of Revenue [Line Items]
Allowance for future sales returns	$ 39		$ 39		$ 37
Payment terms			30 days
Accounts receivable, net	5,277		$ 5,277		6,685
Deferred revenue	27,991		27,991		28,475
Amortization of sales commissions, expense	272	$ 201	718	$ 525
Revenue recognized	3,600		13,300
Total deferred sales commissions	1,500		1,500		1,300
Software and Service Agreements
Disaggregation of Revenue [Line Items]
Contract assets, net of allowances	$ 3,000		$ 3,000		$ 2,700