REVENUE - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 29, 2023
Apr. 30, 2022
Apr. 29, 2023
Apr. 30, 2022
Disaggregation of Revenue [Line Items]        
Total revenue $ 1,132,655 $ 949,227 $ 2,189,176 $ 1,793,670
Products and services at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenue 951,047 773,728 1,838,287 1,447,320
Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenue 181,608 175,499 350,889 346,350
Converged Packet Optical        
Disaggregation of Revenue [Line Items]        
Total revenue 784,549 625,294 1,520,183 1,166,230
Routing and Switching        
Disaggregation of Revenue [Line Items]        
Total revenue 130,310 109,186 249,814 194,896
Platform Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 69,443 69,157 142,888 142,074
Blue Planet Automation Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 20,567 16,881 35,973 37,992
Maintenance Support and Training        
Disaggregation of Revenue [Line Items]        
Total revenue 73,160 74,019 141,051 146,509
Installation and Deployment        
Disaggregation of Revenue [Line Items]        
Total revenue 39,486 41,430 74,061 81,800
Consulting and Network Design        
Disaggregation of Revenue [Line Items]        
Total revenue 15,140 13,260 25,206 24,169
Networking Platforms        
Disaggregation of Revenue [Line Items]        
Total revenue 914,859 734,480 1,769,997 1,361,126
Networking Platforms | Products and services at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenue 914,859 734,480 1,769,997 1,361,126
Networking Platforms | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Networking Platforms | Converged Packet Optical        
Disaggregation of Revenue [Line Items]        
Total revenue 784,549 625,294 1,520,183 1,166,230
Networking Platforms | Routing and Switching        
Disaggregation of Revenue [Line Items]        
Total revenue 130,310 109,186 249,814 194,896
Networking Platforms | Platform Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Networking Platforms | Blue Planet Automation Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Networking Platforms | Maintenance Support and Training        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Networking Platforms | Installation and Deployment        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Networking Platforms | Consulting and Network Design        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Platform Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 69,443 69,157 142,888 142,074
Platform Software and Services | Products and services at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenue 13,447 21,743 32,311 51,424
Platform Software and Services | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenue 55,996 47,414 110,577 90,650
Platform Software and Services | Converged Packet Optical        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Platform Software and Services | Routing and Switching        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Platform Software and Services | Platform Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 69,443 69,157 142,888 142,074
Platform Software and Services | Blue Planet Automation Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Platform Software and Services | Maintenance Support and Training        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Platform Software and Services | Installation and Deployment        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Platform Software and Services | Consulting and Network Design        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Blue Planet Automation Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 20,567 16,881 35,973 37,992
Blue Planet Automation Software and Services | Products and services at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenue 7,329 4,036 11,312 12,810
Blue Planet Automation Software and Services | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenue 13,238 12,845 24,661 25,182
Blue Planet Automation Software and Services | Converged Packet Optical        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Blue Planet Automation Software and Services | Routing and Switching        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Blue Planet Automation Software and Services | Platform Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Blue Planet Automation Software and Services | Blue Planet Automation Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 20,567 16,881 35,973 37,992
Blue Planet Automation Software and Services | Maintenance Support and Training        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Blue Planet Automation Software and Services | Installation and Deployment        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Blue Planet Automation Software and Services | Consulting and Network Design        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Global Services        
Disaggregation of Revenue [Line Items]        
Total revenue 127,786 128,709 240,318 252,478
Global Services | Products and services at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenue 15,412 13,469 24,667 21,960
Global Services | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenue 112,374 115,240 215,651 230,518
Global Services | Converged Packet Optical        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Global Services | Routing and Switching        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Global Services | Platform Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Global Services | Blue Planet Automation Software and Services        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Global Services | Maintenance Support and Training        
Disaggregation of Revenue [Line Items]        
Total revenue 73,160 74,019 141,051 146,509
Global Services | Installation and Deployment        
Disaggregation of Revenue [Line Items]        
Total revenue 39,486 41,430 74,061 81,800
Global Services | Consulting and Network Design        
Disaggregation of Revenue [Line Items]        
Total revenue $ 15,140 $ 13,260 $ 25,206 $ 24,169