REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 27, 2024	Jul. 29, 2023	Jul. 27, 2024	Jul. 29, 2023
Disaggregation of Revenue [Line Items]
Total revenue	$ 942,308	$ 1,067,886	$ 2,890,843	$ 3,257,062
Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	739,750	877,258	2,297,613	2,715,544
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	202,558	190,628	593,230	541,518
Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	699,537	846,560	2,183,030	2,616,558
Networking Platforms \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	699,537	846,560	2,183,030	2,616,558
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	83,212	78,880	258,402	221,768
Platform Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	18,766	15,980	69,149	48,290
Platform Software and Services \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	64,446	62,900	189,253	173,478
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	25,791	13,167	54,167	49,139
Blue Planet Automation Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	11,614	2,832	15,530	14,143
Blue Planet Automation Software and Services \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	14,177	10,335	38,637	34,996
Global Services
Disaggregation of Revenue [Line Items]
Total revenue	133,768	129,279	395,244	369,597
Global Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	9,833	11,886	29,904	36,553
Global Services \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	123,935	117,393	365,340	333,044
Optical Networking
Disaggregation of Revenue [Line Items]
Total revenue	606,845	718,997	1,862,917	2,239,180
Optical Networking \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	606,845	718,997	1,862,917	2,239,180
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	92,692	127,563	320,113	377,378
Routing and Switching \| Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	92,692	127,563	320,113	377,378
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	83,212	78,880	258,402	221,768
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	83,212	78,880	258,402	221,768
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	25,791	13,167	54,167	49,139
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	25,791	13,167	54,167	49,139
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	74,344	72,887	225,869	213,938
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	74,344	72,887	225,869	213,938
Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	46,484	46,840	132,993	120,901
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	46,484	46,840	132,993	120,901
Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	12,940	9,552	36,382	34,758
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	$ 12,940	$ 9,552	$ 36,382	$ 34,758