REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Oct. 30, 2021	Oct. 31, 2020	Nov. 02, 2019
Disaggregation of Revenue [Line Items]
Total revenue	$ 3,620,684	$ 3,532,157	$ 3,572,131
Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	2,948,208	2,918,108	3,003,347
Products and services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	672,476	614,049	568,784
Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	2,553,509	2,547,647	2,562,841
Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	271,796	267,416	348,477
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	229,588	197,809	155,376
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	77,247	62,632	54,555
Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	283,350	269,354	261,337
Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	171,489	152,003	148,233
Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	33,705	35,296	41,312
Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	2,825,305	2,815,063	2,911,318
Networking Platforms \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	2,825,305	2,815,063	2,911,318
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	2,553,509	2,547,647	2,562,841
Networking Platforms \| Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	271,796	267,416	348,477
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
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	229,588	197,809	155,376
Platform Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	80,359	69,099	55,530
Platform Software and Services \| Products and services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	149,229	128,710	99,846
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	229,588	197,809	155,376
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	77,247	62,632	54,555
Blue Planet Automation Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	27,621	19,583	17,697
Blue Planet Automation Software and Services \| Products and services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	49,626	43,049	36,858
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	77,247	62,632	54,555
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	488,544	456,653	450,882
Global Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	14,923	14,363	18,802
Global Services \| Products and services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	473,621	442,290	432,080
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	283,350	269,354	261,337
Global Services \| Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	171,489	152,003	148,233
Global Services \| Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	$ 33,705	$ 35,296	$ 41,312