REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Feb. 01, 2025	Jan. 27, 2024
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,072,260	$ 1,037,709
Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	866,633	845,637
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	205,627	192,072
Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	821,142	807,236
Networking Platforms \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	821,142	807,236
Networking Platforms \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	95,067	89,745
Platform Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	28,931	27,694
Platform Software and Services \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	66,136	62,051
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	26,032	13,942
Blue Planet Automation Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	10,427	1,069
Blue Planet Automation Software and Services \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	15,605	12,873
Global Services
Disaggregation of Revenue [Line Items]
Total revenue	130,019	126,786
Global Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	6,133	9,638
Global Services \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	123,886	117,148
Optical Networking
Disaggregation of Revenue [Line Items]
Total revenue	727,973	695,849
Optical Networking \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	727,973	695,849
Optical Networking \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Optical Networking \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Optical Networking \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	93,169	111,387
Routing and Switching \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	93,169	111,387
Routing and Switching \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Routing and Switching \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Routing and Switching \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	95,067	89,745
Platform Software and Services \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Platform Software and Services \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	95,067	89,745
Platform Software and Services \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Platform Software and Services \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	26,032	13,942
Blue Planet Automation Software and Services \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Blue Planet Automation Software and Services \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Blue Planet Automation Software and Services \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	26,032	13,942
Blue Planet Automation Software and Services \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	74,573	74,115
Maintenance Support and Training \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Maintenance Support and Training \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Maintenance Support and Training \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Maintenance Support and Training \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	74,573	74,115
Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	47,682	42,723
Installation and Deployment \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Installation and Deployment \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Installation and Deployment \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Installation and Deployment \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	47,682	42,723
Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	7,764	9,948
Consulting and Network Design \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Consulting and Network Design \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Consulting and Network Design \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Consulting and Network Design \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	$ 7,764	$ 9,948