v3.26.1
Segment Information and Major Customers - Summary of Net Revenue for Groups of Similar Products and Services (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Apr. 25, 2026
Apr. 26, 2025
Apr. 25, 2026
Apr. 26, 2025
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenue $ 15,841 $ 14,149 $ 46,073 $ 41,981
Total Product        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenue 12,117 10,374 34,836 30,722
Networking        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenue 8,815 7,068 24,877 20,671
Security        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenue 2,008 2,013 6,006 6,142
Collaboration        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenue 1,024 1,031 3,133 3,112
Observability        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenue 269 261 820 796
Services        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenue $ 3,724 $ 3,775 $ 11,237 $ 11,259