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REVENUE (Tables)

12 Months Ended

Nov. 01, 2025

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The tables below set forth Ciena’s disaggregated revenue for the periods indicated (in thousands):

			Year Ended November 1, 2025
			Networking Platforms						Platform Software and Services						Blue Planet Automation Software and Services						Global Services						Total
Product lines:
Optical Networking			$	3,246,239					$	—					$	—					$	—					$	3,246,239
Routing and Switching			430,138						—						—						—						430,138
Platform Software and Services			—						363,830						—						—						363,830
Blue Planet Automation Software and Services			—						—						115,547						—						115,547
Maintenance, Support, and Learning			—						—						—						317,247						317,247
Implementation			—						—						—						246,047						246,047
Advisory and Enablement			—						—						—						50,459						50,459
Total revenue by product line			$	3,676,377					$	363,830					$	115,547					$	613,753					$	4,769,507
Timing of revenue recognition:
Products and services at a point in time			$	3,676,377					$	103,906					$	49,401					$	48,579					$	3,878,263
Products and services transferred over time			—						259,924						66,146						565,174						891,244
Total revenue by timing of revenue recognition			$	3,676,377					$	363,830					$	115,547					$	613,753					$	4,769,507

			Year Ended November 2, 2024
			Networking Platforms						Platform Software and Services						Blue Planet Automation Software and Services						Global Services						Total
Product lines:
Optical Networking			$	2,642,563					$	—					$	—					$	—					$	2,642,563
Routing and Switching			399,492						—						—						—						399,492
Platform Software and Services			—						358,062						—						—						358,062
Blue Planet Automation Software and Services			—						—						77,619						—						77,619
Maintenance, Support, and Learning			—						—						—						303,086						303,086
Implementation			—						—						—						184,358						184,358
Advisory and Enablement			—						—						—						49,775						49,775
Total revenue by product line			$	3,042,055					$	358,062					$	77,619					$	537,219					$	4,014,955
Timing of revenue recognition:
Products and services at a point in time			$	3,042,055					$	99,317					$	19,267					$	44,410					$	3,205,049
Products and services transferred over time			—						258,745						58,352						492,809						809,906
Total revenue by timing of revenue recognition			$	3,042,055					$	358,062					$	77,619					$	537,219					$	4,014,955

			Year Ended October 28, 2023
			Networking Platforms						Platform Software and Services						Blue Planet Automation Software and Services						Global Services						Total
Product lines:
Optical Networking			$	2,987,245					$	—					$	—					$	—					$	2,987,245
Routing and Switching			506,247						—						—						—						506,247
Platform Software and Services			—						303,873						—						—						303,873
Blue Planet Automation Software and Services			—						—						69,170						—						69,170
Maintenance, Support, and Learning			—						—						—						288,334						288,334
Implementation			—						—						—						180,951						180,951
Advisory and Enablement			—						—						—						50,729						50,729
Total revenue by product line			$	3,493,492					$	303,873					$	69,170					$	520,014					$	4,386,549
Timing of revenue recognition:
Products and services at a point in time			$	3,493,492					$	67,013					$	21,842					$	55,036					$	3,637,383
Products and services transferred over time			—						236,860						47,328						464,978						749,166
Total revenue by timing of revenue recognition			$	3,493,492					$	303,873					$	69,170					$	520,014					$	4,386,549

For the periods indicated, Ciena’s geographic distribution of revenue was as follows (in thousands):

			Year Ended
			November 1, 2025						November 2, 2024						October 28, 2023
Geographic distribution:
Americas			$	3,606,407					$	2,951,915					$	3,110,347
EMEA			731,912						648,870						643,142
APAC			431,188						414,170						633,060
Total revenue by geographic distribution			$	4,769,507					$	4,014,955					$	4,386,549

Schedule of Contract Balances

The following table provides information about receivables, contract assets and contract liabilities (deferred revenue) from contracts with customers as of the dates indicated (in thousands):

						Balance at November 1, 2025						Balance at November 2, 2024
Accounts receivable, net						$	975,856					$	908,597
Long-term accounts receivable						$	28,610					$	—
Deferred revenue						$	303,786					$	237,619
Contract assets for unbilled accounts receivable, net						$	157,868					$	127,919

As of the dates indicated, deferred revenue is comprised of the following (in thousands):

			November 1, 2025						November 2, 2024
Products			$	65,382					$	19,017
Services			238,404						218,602
Total deferred revenue			303,786						237,619
Less current portion			(208,936)						(156,379)
Long-term deferred revenue			$	94,850					$	81,240

X

- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-10

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X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

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