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REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2021 | Aug. 01, 2020 | Jul. 31, 2021 | Aug. 01, 2020
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 988,141 | $ 976,712 | $ 2,579,198 | $ 2,703,677
Products and services at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 811,598 | 821,816 | 2,081,549 | 2,246,782
Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 176,543 | 154,896 | 497,649 | 456,895
Converged Packet Optical |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 712,906 | 722,512 | 1,798,888 | 1,968,355
Routing and Switching |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 69,698 | 79,756 | 197,632 | 211,432
Platform Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 56,945 | 46,422 | 163,472 | 143,295
Blue Planet Automation Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 16,607 | 11,297 | 57,499 | 41,779
Maintenance Support and Training |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 74,006 | 69,099 | 212,054 | 202,370
Installation and Deployment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 46,653 | 39,798 | 124,263 | 108,994
Consulting and Network Design |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 11,326 | 7,828 | 25,390 | 27,452
Networking Platforms |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 782,604 | 802,268 | 1,996,520 | 2,179,787
Networking Platforms | Products and services at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 782,604 | 802,268 | 1,996,520 | 2,179,787
Networking Platforms | Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Networking Platforms | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 782,604 | 802,268 | 1,996,520 | 2,179,787
Networking Platforms | Operating Segments | Converged Packet Optical |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 712,906 | 722,512 | 1,798,888 | 1,968,355
Networking Platforms | Operating Segments | Routing and Switching |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 69,698 | 79,756 | 197,632 | 211,432
Networking Platforms | Operating Segments | Platform Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Networking Platforms | Operating Segments | Blue Planet Automation Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Networking Platforms | Operating Segments | Maintenance Support and Training |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Networking Platforms | Operating Segments | Installation and Deployment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Networking Platforms | Operating Segments | 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 | 56,945 | 46,422 | 163,472 | 143,295
Platform Software and Services | Products and services at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 17,928 | 15,838 | 54,756 | 45,930
Platform Software and Services | Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 39,017 | 30,584 | 108,716 | 97,365
Platform Software and Services | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 56,945 | 46,422 | 163,472 | 143,295
Platform Software and Services | Operating Segments | Converged Packet Optical |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Platform Software and Services | Operating Segments | Routing and Switching |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Platform Software and Services | Operating Segments | Platform Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 56,945 | 46,422 | 163,472 | 143,295
Platform Software and Services | Operating Segments | Blue Planet Automation Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Platform Software and Services | Operating Segments | Maintenance Support and Training |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Platform Software and Services | Operating Segments | Installation and Deployment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Platform Software and Services | Operating Segments | 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 | 16,607 | 11,297 | 57,499 | 41,779
Blue Planet Automation Software and Services | Products and services at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 4,558 | 410 | 20,497 | 8,891
Blue Planet Automation Software and Services | Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 12,049 | 10,887 | 37,002 | 32,888
Blue Planet Automation Software and Services | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 16,607 | 11,297 | 57,499 | 41,779
Blue Planet Automation Software and Services | Operating Segments | Converged Packet Optical |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Blue Planet Automation Software and Services | Operating Segments | Routing and Switching |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Blue Planet Automation Software and Services | Operating Segments | Platform Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Blue Planet Automation Software and Services | Operating Segments | Blue Planet Automation Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 16,607 | 11,297 | 57,499 | 41,779
Blue Planet Automation Software and Services | Operating Segments | Maintenance Support and Training |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Blue Planet Automation Software and Services | Operating Segments | Installation and Deployment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Blue Planet Automation Software and Services | Operating Segments | Consulting and Network Design |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Global Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 131,985 | 116,725 | 361,707 | 338,816
Global Services | Products and services at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 6,508 | 3,300 | 9,776 | 12,174
Global Services | Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 125,477 | 113,425 | 351,931 | 326,642
Global Services | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 131,985 | 116,725 | 361,707 | 338,816
Global Services | Operating Segments | Converged Packet Optical |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Global Services | Operating Segments | Routing and Switching |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Global Services | Operating Segments | Platform Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Global Services | Operating Segments | Blue Planet Automation Software and Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Global Services | Operating Segments | Maintenance Support and Training |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 74,006 | 69,099 | 212,054 | 202,370
Global Services | Operating Segments | Installation and Deployment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 46,653 | 39,798 | 124,263 | 108,994
Global Services | Operating Segments | Consulting and Network Design |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 11,326 | $ 7,828 | $ 25,390 | $ 27,452

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