REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 27, 2024	Apr. 29, 2023	Apr. 27, 2024	Apr. 29, 2023
Disaggregation of Revenue [Line Items]
Total revenue	$ 910,826	$ 1,132,655	$ 1,948,535	$ 2,189,176
Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	712,227	951,047	1,557,863	1,838,287
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	198,599	181,608	390,672	350,889
Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	676,258	914,859	1,483,493	1,769,997
Networking Platforms | Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	676,258	914,859	1,483,493	1,769,997
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	85,445	69,443	175,190	142,888
Platform Software and Services | Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	22,689	13,447	50,383	32,311
Platform Software and Services | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	62,756	55,996	124,807	110,577
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	14,434	20,567	28,376	35,973
Blue Planet Automation Software and Services | Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	2,848	7,329	3,916	11,312
Blue Planet Automation Software and Services | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	11,586	13,238	24,460	24,661
Global Services
Disaggregation of Revenue [Line Items]
Total revenue	134,689	127,786	261,476	240,318
Global Services | Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	10,432	15,412	20,071	24,667
Global Services | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	124,257	112,374	241,405	215,651
Optical Networking
Disaggregation of Revenue [Line Items]
Total revenue	560,224	784,549	1,256,072	1,520,183
Optical Networking | Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	560,224	784,549	1,256,072	1,520,183
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	116,034	130,310	227,421	249,814
Routing and Switching | Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	116,034	130,310	227,421	249,814
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	85,445	69,443	175,190	142,888
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	85,445	69,443	175,190	142,888
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	14,434	20,567	28,376	35,973
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	14,434	20,567	28,376	35,973
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	77,410	73,160	151,525	141,051
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	77,410	73,160	151,525	141,051
Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	43,785	39,486	86,509	74,061
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	43,785	39,486	86,509	74,061
Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	13,494	15,140	23,442	25,206
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	$ 13,494	$ 15,140	$ 23,442	$ 25,206