REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 02, 2025	Jul. 27, 2024	Aug. 02, 2025	Jul. 27, 2024
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,219,385	$ 942,308	$ 3,417,523	$ 2,890,843
Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	987,350	739,750	2,760,700	2,297,613
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	232,035	202,558	656,823	593,230
Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	941,354	699,537	2,628,811	2,183,030
Networking Platforms \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	941,354	699,537	2,628,811	2,183,030
Networking Platforms \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	89,961	83,212	270,469	258,402
Platform Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	24,281	18,766	75,260	69,149
Platform Software and Services \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	65,680	64,446	195,209	189,253
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	27,805	25,791	81,787	54,167
Blue Planet Automation Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	11,909	11,614	32,846	15,530
Blue Planet Automation Software and Services \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	15,896	14,177	48,941	38,637
Global Services
Disaggregation of Revenue [Line Items]
Total revenue	160,265	133,768	436,456	395,244
Global Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	9,806	9,833	23,783	29,904
Global Services \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	150,459	123,935	412,673	365,340
Optical Networking
Disaggregation of Revenue [Line Items]
Total revenue	815,497	606,845	2,317,062	1,862,917
Optical Networking \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	815,497	606,845	2,317,062	1,862,917
Optical Networking \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Optical Networking \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Optical Networking \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	125,857	92,692	311,749	320,113
Routing and Switching \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	125,857	92,692	311,749	320,113
Routing and Switching \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Routing and Switching \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Routing and Switching \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	89,961	83,212	270,469	258,402
Platform Software and Services \| Networking Platforms
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	89,961	83,212	270,469	258,402
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 \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	27,805	25,791	81,787	54,167
Blue Planet Automation Software and Services \| Networking Platforms
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	27,805	25,791	81,787	54,167
Blue Planet Automation Software and Services \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	80,743	74,344	234,758	225,869
Maintenance Support and Training \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Maintenance Support and Training \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Maintenance Support and Training \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Maintenance Support and Training \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	80,743	74,344	234,758	225,869
Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	65,878	46,484	171,735	132,993
Installation and Deployment \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Installation and Deployment \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Installation and Deployment \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Installation and Deployment \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	65,878	46,484	171,735	132,993
Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	13,644	12,940	29,963	36,382
Consulting and Network Design \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Consulting and Network Design \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Consulting and Network Design \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Consulting and Network Design \| Global Services
Disaggregation of Revenue [Line Items]
Total revenue	$ 13,644	$ 12,940	$ 29,963	$ 36,382