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REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 12 Months Ended
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Oct. 29, 2022 | Oct. 30, 2021 | Oct. 31, 2020
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | $ 3,632,661 | $ 3,620,684 | $ 3,532,157
Products and services at a point in time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 2,933,692 | 2,948,208 | 2,918,108
Products and services transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 698,969 | 672,476 | 614,049
Converged Packet Optical |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 2,379,931 | 2,553,509 | 2,547,647
Routing and Switching |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 398,439 | 271,796 | 267,416
Platform Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 277,191 | 229,588 | 197,809
Blue Planet Automation Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 76,567 | 77,247 | 62,632
Maintenance Support and Training |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 292,375 | 283,350 | 269,354
Installation and Deployment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 157,443 | 171,489 | 152,003
Consulting and Network Design |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 50,715 | 33,705 | 35,296
Networking Platforms |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 2,778,370 | 2,825,305 | 2,815,063
Networking Platforms | Products and services at a point in time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 2,778,370 | 2,825,305 | 2,815,063
Networking Platforms | Products and services transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Networking Platforms | Converged Packet Optical |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 2,379,931 | 2,553,509 | 2,547,647
Networking Platforms | Platform Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Networking Platforms | Blue Planet Automation Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Networking Platforms | Maintenance Support and Training |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Networking Platforms | Installation and Deployment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Networking Platforms | Consulting and Network Design |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Networking Platforms | Packet Networking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 398,439 | 271,796 | 267,416
Platform Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 277,191 | 229,588 | 197,809
Platform Software and Services | Products and services at a point in time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 85,691 | 80,359 | 69,099
Platform Software and Services | Products and services transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 191,500 | 149,229 | 128,710
Platform Software and Services | Converged Packet Optical |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Platform Software and Services | Routing and Switching |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Platform Software and Services | Platform Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 277,191 | 229,588 | 197,809
Platform Software and Services | Blue Planet Automation Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Platform Software and Services | Maintenance Support and Training |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Platform Software and Services | Installation and Deployment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Platform Software and Services | Consulting and Network Design |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Blue Planet Automation Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 76,567 | 77,247 | 62,632
Blue Planet Automation Software and Services | Products and services at a point in time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 25,540 | 27,621 | 19,583
Blue Planet Automation Software and Services | Products and services transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 51,027 | 49,626 | 43,049
Blue Planet Automation Software and Services | Converged Packet Optical |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Blue Planet Automation Software and Services | Routing and Switching |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Blue Planet Automation Software and Services | Platform Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Blue Planet Automation Software and Services | Blue Planet Automation Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 76,567 | 77,247 | 62,632
Blue Planet Automation Software and Services | Maintenance Support and Training |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Blue Planet Automation Software and Services | Installation and Deployment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Blue Planet Automation Software and Services | Consulting and Network Design |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Global Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 500,533 | 488,544 | 456,653
Global Services | Products and services at a point in time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 44,091 | 14,923 | 14,363
Global Services | Products and services transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 456,442 | 473,621 | 442,290
Global Services | Converged Packet Optical |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Global Services | Routing and Switching |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Global Services | Platform Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Global Services | Blue Planet Automation Software and Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 0 | 0 | 0
Global Services | Maintenance Support and Training |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 292,375 | 283,350 | 269,354
Global Services | Installation and Deployment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 157,443 | 171,489 | 152,003
Global Services | Consulting and Network Design |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | $ 50,715 | $ 33,705 | $ 35,296

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