v3.26.1
Segment Information - Schedule of Disaggregation of Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Earnings (Loss) Before Taxes:        
Total consolidated net revenue $ 10,678 $ 7,627 $ 19,979 $ 15,481
Networking        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 2,690 1,084 5,396 2,160
Campus & Branch        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 1,322 880 2,549 1,744
Data Center Networking        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 320 96 764 188
Security        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 273 107 528 226
Routing        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 775 1 1,555 2
Cloud & AI        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 7,707 6,271 14,041 12,782
Server        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 5,454 4,109 9,686 8,457
Storage        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 1,175 1,148 2,236 2,203
Financial Services        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 904 856 1,780 1,729
Other        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue 174 158 339 393
Corporate Investments and Other        
Earnings (Loss) Before Taxes:        
Total consolidated net revenue $ 281 $ 272 $ 542 $ 539