Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 24, 2026	Jan. 25, 2025	Jan. 24, 2026	Jan. 25, 2025	Jul. 26, 2025
Disaggregation of Revenue [Line Items]
Payment terms			30 days
Accounts receivable, net	$ 6,606		$ 6,606		$ 6,701
Deferred revenue	28,403		28,403		28,779
Revenue recognized	4,500		9,900
Total deferred sales commissions	1,500		1,500		1,500
Amortization of sales commissions, expense	249	$ 238	483	$ 446
Software and Service Agreements
Disaggregation of Revenue [Line Items]
Contract assets, net of allowances	3,400		3,400		3,200
Contract assets, current	$ 1,800		$ 1,800		$ 1,700