0000936395-22-000065 | 10-K | XBRL Viewer

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Cover - USD ($) $ in Billions	12 Months Ended
Cover - USD ($) $ in Billions	Oct. 29, 2022	Dec. 09, 2022	Apr. 29, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Oct. 29, 2022
Current Fiscal Year End Date	--10-29
Document Transition Report	false
Entity File Number	001-36250
Entity Registrant Name	Ciena Corp
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	23-2725311
Entity Address, Address Line One	7035 Ridge Road
Entity Address, City or Town	Hanover
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	21076
City Area Code	410
Local Phone Number	694-5700
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	CIEN
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 8.3
Entity Common Stock, Shares Outstanding		148,415,009
Documents Incorporated by Reference	Part III of the Form 10-K incorporates by reference certain portions of the registrant’s definitive proxy statement for its 2023 Annual Meeting of Stockholders to be filed with the Commission not later than 120 days after the end of the fiscal year covered by this report.
Entity Central Index Key	0000936395
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false

Audit Information	12 Months Ended
Audit Information	Oct. 29, 2022
Audit Information [Abstract]
Auditor Firm ID	238
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Baltimore, Maryland

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Current assets:
Cash and cash equivalents	$ 994,352	$ 1,422,546
Short-term investments	153,989	181,483
Accounts receivable, net	920,772	884,958
Inventories, net	946,730	374,265
Prepaid expenses and other	370,053	325,654
Total current assets	3,385,896	3,188,906
Long-term investments	35,385	70,038
Equipment, building, furniture and fixtures, net	267,779	284,968
Operating right-of-use assets	45,108	44,285
Goodwill	328,322	311,645
Other intangible assets, net	69,517	65,314
Deferred tax asset, net	824,008	800,180
Other long-term assets	113,617	99,891
Total assets	5,069,632	4,865,227
Current liabilities:
Accounts payable	516,047	356,176
Accrued liabilities and other short-term obligations	360,782	409,285
Deferred revenue	137,899	118,007
Operating lease liabilities	18,925	18,632
Current portion of long-term debt	6,930	6,930
Total current liabilities	1,040,583	909,030
Long-term deferred revenue	62,336	57,457
Other long-term obligations	150,335	166,803
Long-term operating lease liabilities	42,392	41,564
Long-term debt, net	1,061,125	670,355
Total liabilities	2,356,771	1,845,209
Commitments and contingencies (Note 27)
Stockholders’ equity:
Preferred stock — par value $0.01; 20,000,000 shares authorized; zero shares issued and outstanding	0	0
Common stock — par value $0.01; 290,000,000 shares authorized; 148,412,943 and 154,858,981 shares issued and outstanding	1,484	1,549
Additional paid-in capital	6,390,252	6,803,162
Accumulated other comprehensive income (loss)	(46,645)	439
Accumulated deficit	(3,632,230)	(3,785,132)
Total stockholders’ equity	2,712,861	3,020,018
Total liabilities and stockholders’ equity	$ 5,069,632	$ 4,865,227

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Oct. 29, 2022	Oct. 30, 2021
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	290,000,000	290,000,000
Common stock, shares issued (in shares)	148,412,943	154,858,981
Common stock, shares outstanding (in shares)	148,412,943	154,858,981

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Revenue:
Total revenue	$ 3,632,661	$ 3,620,684	$ 3,532,157
Cost of goods sold:
Total cost of goods sold	2,072,317	1,898,705	1,879,266
Gross profit	1,560,344	1,721,979	1,652,891
Operating expenses:
Research and development	624,656	536,666	529,888
Selling and marketing	466,565	452,214	416,425
General and administrative	179,382	181,874	169,548
Significant asset impairments and restructuring costs	33,824	29,565	22,652
Amortization of intangible assets	32,511	23,732	23,383
Acquisition and integration costs	598	2,572	4,031
Total operating expenses	1,337,536	1,226,623	1,165,927
Income from operations	222,808	495,356	486,964
Interest and other income (loss), net	6,747	(1,768)	964
Interest expense	(47,050)	(30,837)	(31,321)
Loss on extinguishment and modification of debt	0	0	(646)
Income before income taxes	182,505	462,751	455,961
Provision (benefit) for income taxes	29,603	(37,445)	94,670
Net income	$ 152,902	$ 500,196	$ 361,291
Basic net income per common share (in dollars per share)	$ 1.01	$ 3.22	$ 2.34
Diluted net income per potential common share (in dollars per share)	$ 1.00	$ 3.19	$ 2.32
Weighted average basic common shares outstanding (in shares)	151,208	155,279	154,287
Weighted average diluted potential common shares outstanding (in shares)	152,193	156,743	155,955
Products
Revenue:
Total revenue	$ 2,888,848	$ 2,932,602	$ 2,914,790
Cost of goods sold:
Total cost of goods sold	1,699,631	1,545,269	1,573,791
Services
Revenue:
Total revenue	743,813	688,082	617,367
Cost of goods sold:
Total cost of goods sold	$ 372,686	$ 353,436	$ 305,475

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Net income	$ 152,902	$ 500,196	$ 361,291
Other Comprehensive Income (Loss)
Change in unrealized loss on available-for-sale securities, net of tax	(2,801)	(209)	(107)
Change in accumulated translation adjustments	(49,446)	20,215	(4,174)
Other comprehensive income gain (loss)	(47,084)	35,797	(13,274)
Total comprehensive income	105,818	535,993	348,017
Change in unrealized gain (loss) on foreign currency forward contracts, net of tax
Other Comprehensive Income (Loss)
Change in unrealized gain (loss) on derivatives	(16,413)	6,435	(1,144)
Change in unrealized gain (loss) on forward starting interest rate swaps, net of tax
Other Comprehensive Income (Loss)
Change in unrealized gain (loss) on derivatives	$ 21,576	$ 9,356	$ (7,849)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in-Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Nov. 02, 2019			154,403,850
Beginning balance at Nov. 02, 2019	$ 2,172,761		$ 1,544	$ 6,837,714	$ (22,084)	$ (4,644,413)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	361,291					361,291
Other comprehensive income	(13,274)				(13,274)
Repurchases of common stock - repurchase program (in shares)			(1,872,446)
Repurchases of common stock - repurchase program	(74,535)		$ (19)	(74,516)
Issuance of shares from employee equity plans (in shares)			2,787,011
Issuance of shares from employee equity plans	28,068		$ 29	28,039
Share-based compensation expense	67,758			67,758
Shares repurchased for tax withholdings on vesting of stock units awards (in shares)			(755,410)
Shares repurchased for tax withholdings on vesting of stock unit awards	(32,472)		$ (8)	(32,464)
Ending balance (in shares) at Oct. 31, 2020			154,563,005
Ending balance at Oct. 31, 2020	$ 2,509,597	$ (2,206)	$ 1,546	6,826,531	(35,358)	(4,283,122)	$ (2,206)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2016-13 [Member]
Net income	$ 500,196					500,196
Other comprehensive income	35,797				35,797
Repurchases of common stock - repurchase program (in shares)			(1,696,949)
Repurchases of common stock - repurchase program	(92,088)		$ (17)	(92,071)
Issuance of shares from employee equity plans (in shares)			2,826,399
Issuance of shares from employee equity plans	28,457		$ 28	28,429
Share-based compensation expense	84,336			84,336
Shares repurchased for tax withholdings on vesting of stock units awards (in shares)			(833,474)
Shares repurchased for tax withholdings on vesting of stock unit awards	$ (44,071)		$ (8)	(44,063)
Ending balance (in shares) at Oct. 30, 2021	154,858,981		154,858,981
Ending balance at Oct. 30, 2021	$ 3,020,018		$ 1,549	6,803,162	439	(3,785,132)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	152,902
Other comprehensive income	(47,084)				(47,084)
Repurchases of common stock - repurchase program (in shares)			(8,433,957)
Repurchases of common stock - repurchase program	(500,000)		$ (84)	(499,916)
Issuance of shares from employee equity plans (in shares)			2,807,123
Issuance of shares from employee equity plans	30,348		$ 27	30,321
Share-based compensation expense	105,131			105,131
Shares repurchased for tax withholdings on vesting of stock units awards (in shares)			(819,204)
Shares repurchased for tax withholdings on vesting of stock unit awards	$ (48,454)		$ (8)	(48,446)
Ending balance (in shares) at Oct. 29, 2022	148,412,943		148,412,943
Ending balance at Oct. 29, 2022	$ 2,712,861		$ 1,484	$ 6,390,252	$ (46,645)	$ (3,632,230)

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Cash flows provided by (used in) operating activities:
Net income	$ 152,902	$ 500,196	$ 361,291
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation of equipment, building, furniture and fixtures, and amortization of leasehold improvements	95,922	96,233	93,908
Share-based compensation costs	105,131	84,336	67,758
Amortization of intangible assets	44,281	36,033	38,619
Deferred taxes	(27,502)	(156,469)	64,339
Provision for inventory excess and obsolescence	16,184	17,850	24,701
Provision for warranty	17,440	17,093	22,417
Other	0	14,525	20,483
Changes in assets and liabilities:
Accounts receivable	(47,069)	(174,377)	(17,299)
Inventories	(589,113)	(47,567)	(25,044)
Prepaid expenses and other	(58,996)	(19,691)	(38,998)
Operating lease right-of-use assets	16,453	16,632	16,787
Accounts payable, accruals and other obligations	100,327	162,134	(117,931)
Deferred revenue	26,380	16,822	2,519
Short and long-term operating lease liabilities	(20,096)	(22,104)	(19,896)
Net cash provided by (used in) operating activities	(167,756)	541,646	493,654
Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(90,818)	(79,550)	(82,667)
Purchase of available-for-sale securities	(643,971)	(172,778)	(223,196)
Proceeds from maturities of available for sale securities	698,642	152,253	110,390
Proceeds from sale of cost method equity investment	0	4,678	0
Purchase of cost method equity investment	(8,000)	0	0
Settlement of foreign currency forward contracts, net	4,942	4,680	3,531
Acquisition of businesses, net of cash acquired	(62,043)	0	(28,300)
Net cash used in investing activities	(101,248)	(90,717)	(220,242)
Cash flows used in financing activities:
Proceeds from issuance of senior notes	400,000	0	0
Payment of long-term debt	(5,197)	(6,929)	(5,198)
Payment of debt issuance costs	(5,484)	0	(382)
Payment of finance lease obligations	(3,468)	(3,004)	(2,703)
Shares repurchased for tax withholdings on vesting of stock unit awards	(48,454)	(44,071)	(32,472)
Repurchases of common stock - repurchase program	(500,800)	(91,288)	(74,535)
Proceeds from issuance of common stock	30,348	28,457	28,068
Net cash used in financing activities	(133,055)	(116,835)	(87,222)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(26,167)	(198)	(1,643)
Net increase (decrease) in cash, cash equivalents and restricted cash	(428,226)	333,896	184,547
Cash, cash equivalents and restricted cash at beginning of fiscal year	1,422,604	1,088,708	904,161
Cash, cash equivalents and restricted cash at end of fiscal year	994,378	1,422,604	1,088,708
Supplemental disclosure of cash flow information
Cash paid during the fiscal year for interest	42,812	29,864	32,837
Cash paid during the fiscal year for income taxes, net	34,967	73,127	53,076
Operating lease payments	21,661	24,058	22,089
Non-cash investing and financing activities
Purchase of equipment in accounts payable	12,373	10,138	7,854
Repurchase of common stock in accrued liabilities from repurchase program	0	800	0
Operating lease right-of-use assets subject to lease liability	23,242	4,356	24,160
Unrealized gain on equity investment	$ 4,120	$ 0	$ 2,681

CIENA CORPORATION AND SIGNIFICANT ACCOUNTING POLICIES AND ESTIMATES	12 Months Ended
	Oct. 29, 2022
Accounting Policies [Abstract]
CIENA CORPORATION AND SIGNIFICANT ACCOUNTING POLICIES AND ESTIMATES	CIENA CORPORATION AND SIGNIFICANT ACCOUNTING POLICIES AND ESTIMATES Description of Business Ciena Corporation (“Ciena” or the “Company”) is a networking systems, services and software company, providing solutions that enable a wide range of network operators to deploy and manage next-generation networks that deliver services to businesses and consumers. Ciena provides hardware, software and services that support the delivery of video, data and voice traffic over core, metro, aggregation and access communications networks. Ciena’s solutions are used globally by communications service providers, cable and multiservice operators, Web-scale providers, submarine network operators, governments, and enterprises across multiple industry verticals. Ciena’s portfolio is designed to enable the Adaptive Network™, Ciena’s vision for a network end state that leverages a programmable and scalable network infrastructure, driven by software control and automation capabilities, that are informed by analytics and intelligence. By transforming network infrastructures into a dynamic, programmable environment driven by automation and analytics, network operators can realize greater business agility, dynamically adapt to changing end-user service demands and rapidly introduce new revenue-generating services. They can also gain valuable real-time network insights, allowing them to optimize network performance and maximize the return on their network infrastructure investment. Ciena’s solutions include Networking Platforms, including its Converged Packet Optical and Routing and Switching portfolios, which can be applied from the network core to end-user access points, and which allow network operators to scale capacity, increase transmission speeds, allocate traffic efficiently and adapt dynamically to changing end-user service demands. Ciena’s Converged Packet Optical portfolio includes products that support long haul and regional networks, submarine and data center interconnect networks, and metro and edge networks. Ciena’s Routing and Switching portfolio includes products and solutions that enable efficient internet protocol (“IP”) transport in next-generation metro edge, access and aggregation networks. To complement its Networking Platforms, Ciena offers Platform Software, which includes its Manage, Control and Plan (“MCP”) applications that deliver advanced multi-layer domain control and operations. Ciena, through its Blue Planet® Software, also enables complete service lifecycle management automation with productized operational support systems (“OSSs”) and service assurance solutions that help its customers to achieve closed loop automation across multi-vendor and multi-domain environments. In addition to its systems and software, Ciena also offers a broad range of services that help its customers build, operate and improve their networks and associated operational environments. These include network transformation, consulting, implementation, systems integration, maintenance, network operations center (“NOC”) management, learning, and optimization services. Basis of Presentation The accompanying consolidated financial statements include the accounts of Ciena and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Ciena has a 52 or 53-week fiscal year, which ends on the Saturday nearest to the last day of October in each year (October 29, 2022, October 30, 2021 and October 31, 2020 for the periods reported). Fiscal 2022, fiscal 2021 and fiscal 2020 each consisted of a 52-week fiscal year. Business Combinations Ciena records acquisitions using the purchase method of accounting. All of the assets acquired, liabilities assumed, contractual contingencies and contingent consideration are recognized at their fair value as of the acquisition date. The excess of the purchase price over the estimated fair values of the net tangible and net intangible assets acquired is recorded as goodwill. The application of the purchase method of accounting for business combinations requires management to make significant estimates and assumptions in the determination of the fair value of assets acquired and liabilities assumed, in order to properly allocate purchase price consideration between assets that are depreciated and amortized from goodwill. These assumptions and estimates include a market participant’s use of the asset and the appropriate discount rates for a market participant. Ciena’s estimates are based on historical experience, information obtained from the management of the acquired companies and, when appropriate, include assistance from independent third-party appraisal firms. Significant assumptions and estimates can include, but are not limited to, the cash flows that an asset is expected to generate in the future, the appropriate weighted-average cost of capital and the cost savings expected to be derived from acquiring an asset. These estimates are inherently uncertain and unpredictable. In addition, unanticipated events and circumstances may occur which may affect the accuracy or validity of such estimates. Use of Estimates The preparation of the financial statements and related disclosures in conformity with Generally Accepted Accounting Principles (“GAAP”) requires management to make estimates and judgments that affect the amounts reported in the consolidated financial statements and accompanying notes. Estimates are used for selling prices for multiple element arrangements, shared-based compensation, bad debts, valuation of inventories and investments, recoverability of intangible assets, other long-lived assets and goodwill, income taxes, warranty obligations, restructuring liabilities, derivatives, contingencies and litigation. Ciena bases its estimates on historical experience and assumptions that it believes are reasonable. Actual results may differ materially from management’s estimates. Cash and Cash Equivalents Ciena considers all highly liquid investments purchased with original maturities of three months or less to be cash equivalents. Any restricted cash collateralizing letters of credit is included in other current assets and other long-term assets depending on the duration of the restriction. Investments Ciena’s investments in debt securities are classified as available-for-sale and reported at fair value, with unrealized gains and losses recorded in accumulated other comprehensive income (loss). Ciena recognizes losses in the income statement when it determines that declines in the fair value of its investments below their cost basis are other-than-temporary. In determining whether a decline in fair value is other-than-temporary, Ciena considers various factors, including market price (when available), investment ratings, the financial condition and near-term prospects of the investee, the length of time and the extent to which the fair value has been less than Ciena’s cost basis, and Ciena’s intent and ability to hold the investment until maturity or for a period of time sufficient to allow for any anticipated recovery in market value. Ciena considers all marketable debt securities that it expects to convert to cash within one year or less to be short-term investments, with all others considered to be long-term investments. Ciena has minority equity investments in privately held technology companies that are classified in other long-term assets. These investments are carried at cost because Ciena owns less than 20% of the voting equity and does not have the ability to exercise significant influence over the company. Ciena monitors these investments for impairment and makes appropriate reductions to the carrying value when necessary. As of October 29, 2022, the combined carrying value of these investments was $20.7 million. Ciena elects to estimate the fair value at cost minus impairment, if any, plus or minus observable price changes in orderly transactions for identical or similar investments of the same issuer. Ciena evaluates these investments for impairment or observable price changes quarterly and records adjustments to interest and other income (loss), net on the Consolidated Statements of Operations. Inventories Inventories are stated at the lower of cost or market, with cost computed using standard cost, which approximates actual cost, on a first-in, first-out basis. Ciena records a provision for excess and obsolete inventory when an impairment has been identified. Segment Reporting Ciena’s chief operating decision maker, its chief executive officer, evaluates the Company’s performance and allocates resources based on multiple factors, including measures of segment profit (loss). Operating segments are defined as components of an enterprise that engage in business activities that may earn revenue and incur expense, for which discrete financial information is available, and for which such information is evaluated regularly by the chief operating decision maker for purposes of allocating resources and assessing performance. Ciena has the following operating segments for reporting purposes: (i) Networking Platforms; (ii) Platform Software and Services; (iii) Blue Planet Automation Software and Services; and (iv) Global Services. See Note 25 below. Goodwill Goodwill is the excess of the purchase price over the fair values assigned to the net assets acquired in a business combination. Ciena tests goodwill for impairment on an annual basis, which it has determined to be the last business day of fiscal September each year. Ciena also tests goodwill for impairment between annual tests if an event occurs or circumstances change that would, more likely than not, reduce the fair value of the reporting unit below its carrying value. Annually, Ciena tests goodwill impairment qualitatively, or quantitatively by comparing the fair value of the reporting unit with the unit’s carrying amount, including goodwill. If this test indicates that the fair value is less than the carrying value, then an impairment loss is recognized limited to the total amount of goodwill allocated to that reporting unit. A non-cash goodwill impairment charge would have the effect of decreasing earnings or increasing losses in such period. If Ciena is required to take a substantial impairment charge, its operating results would be materially adversely affected in such period. Long-lived Assets Long-lived assets include: equipment, building, furniture and fixtures, operating right-of-use (“ROU”) assets, finite-lived intangible assets and maintenance spares. Ciena tests long-lived assets for impairment whenever triggering events or changes in circumstances indicate that the asset’s carrying amount is not recoverable from its undiscounted cash flows. An impairment loss is measured as the amount by which the carrying amount of the asset or asset group exceeds its fair value. Ciena’s long-lived assets are assigned to asset groups that represent the lowest level for which cash flows can be identified. Equipment, Building, Furniture and Fixtures and Internal Use Software Equipment, building, furniture and fixtures are recorded at cost. Depreciation and amortization are computed using the straight-line method, generally over useful lives of three years to five years for equipment and furniture and fixtures and the shorter of useful life or lease term for leasehold improvements. Qualifying internal use software and website development costs incurred during the application development stage, which consist primarily of outside services and purchased software license costs, are capitalized and amortized straight-line over the estimated useful lives of two years to five years. Leases At the inception of a contract, Ciena must determine whether the contract is or contains a lease. The contract is or contains a lease if the contract conveys the right to control the use of the property, plant, or equipment for a designated term in exchange for consideration. Ciena’s evaluation of its contracts follows the assessment of whether there is a right to obtain substantially all of the economic benefits from the use and the right to direct the use of the identified asset in the contract. Operating leases are included in the Operating ROU assets, Operating lease liabilities and Long-term operating lease liabilities in the Consolidated Balance Sheets. Finance leases are included in Equipment, building, furniture and fixtures, net (“Finance ROU assets”), Accrued liabilities and other short-term obligations and Other long-term obligations in the Consolidated Balance Sheets. Ciena has operating and finance leases that primarily relate to real property. Ciena has elected not to capitalize leases with a term of 12 months or less without a purchase option that it is likely to exercise. Ciena has elected not to separate lease and non-lease components of operating and finance leases. Lease components are payment items directly attributable to the use of the underlying asset, while non-lease components are explicit elements of a contract not directly related to the use of the underlying asset, including pass-through operating expenses like common area maintenance and utilities. Operating ROU assets and lease liabilities and Finance ROU assets and lease liabilities are recognized on the Consolidated Balance Sheets at the present value of the future lease payments over the life of the lease term. Ciena uses discount rates based on incremental borrowing rates, on a collateralized basis, for the respective underlying assets, for terms similar to the respective leases when implicit rates for leases are not determinable. Operating lease costs are included as rent expense in the Consolidated Statements of Operations. Fixed base payments on operating leases paid directly to the lessor are recorded as lease expense on a straight-line basis. Related variable payments based on usage, changes in an index, or market rate are expensed as incurred. Finance ROU assets are generally amortized on a straight-line basis over the lease term with the interest expense on the lease liability recorded using the interest method. The amortization and interest expense are recorded separately in the Consolidated Statements of Operations. Intangible Assets Ciena has recorded finite-lived intangible assets as a result of several acquisitions. Finite-lived intangible assets are carried at cost less accumulated amortization. Amortization is computed using the straight-line method over the expected economic lives of the respective assets, up to seven years, which approximates the use of intangible assets. Maintenance Spares Maintenance spares are recorded at cost. Spares usage cost is expensed ratably over four years. Concentrations Substantially all of Ciena’s cash and cash equivalents are maintained at a small number of major U.S. financial institutions. The majority of Ciena’s cash equivalents consist of money market funds. Deposits held with banks may exceed the amount of insurance provided on such deposits. Because these deposits generally may be redeemed upon demand, management believes that they bear minimal risk. Historically, a significant percentage of Ciena’s revenue has been concentrated among sales to a small number of large communications service providers and Web-scale providers. Consolidation among Ciena’s customers has increased this concentration. Consequently, Ciena’s accounts receivable are concentrated among these customers. See Note 2 below. Additionally, Ciena’s access to certain materials or components is dependent on sole or limited source suppliers. The inability of any of these suppliers to fulfill Ciena’s supply requirements, or significant changes in supply cost, could affect future results. Ciena relies on a small number of contract manufacturers to perform the majority of the manufacturing for its products. If Ciena cannot effectively manage these manufacturers or forecast future demand, or if these manufacturers fail to deliver products or components on time, Ciena’s business and results of operations may suffer. Revenue Recognition Ciena recognizes revenue when control of the promised products or services is transferred to its customer, in an amount that reflects the consideration to which Ciena expects to be entitled in exchange for those products or services. Ciena determines revenue recognition by applying the following five-step approach: •identification of the contract, or contracts, with a customer; •identification of the performance obligations in the contract; •determination of the transaction price; •allocation of the transaction price to the performance obligations in the contract; and •recognition of revenue when, or as, Ciena satisfies a performance obligation. Generally, Ciena makes sales pursuant to purchase orders placed by customers under framework agreements that govern the general commercial terms and conditions of the sale of Ciena’s products and services. These purchase orders under framework agreements are used to determine the identification of the contract or contracts with this customer. Purchase orders typically include the description, quantity, and price of each product or service purchased. Purchase orders may include one-line bundled pricing for both products and services. Accordingly, purchase orders can include various combinations of products and services that are generally distinct and accounted for as separate performance obligations. Ciena evaluates each promised product and service offering to determine whether it represents a distinct performance obligation. In doing so, Ciena considers, among other things, customary business practices, whether the customer can benefit from the product or service on its own or together with other resources that are readily available, and whether Ciena’s commitment to transfer the product or service to the customer is separately identifiable from other obligations in the purchase order. For transactions where Ciena delivers the product or services, Ciena is typically the principal and records revenue and costs of goods sold on a gross basis. Purchase orders are invoiced based on the terms set forth either in the purchase order or the framework agreement, as applicable. Generally, sales of products and software licenses are invoiced upon shipment or delivery. Maintenance and software subscription services are invoiced quarterly or annually in advance of the service term. Ciena’s other service offerings are generally invoiced upon completion of the service. Payment terms and cash received typically range from 30 to 90 days from the invoicing date. Historically, Ciena has not provided any material financing arrangements to its customers. As a practical expedient, Ciena does not adjust the amount of consideration it will receive for the effects of a significant financing component as it expects, at contract inception, that the period between Ciena’s transfer of the products or services to the customer and customer payment for the products or services will be one year or less. Shipping and handling fees invoiced to customers are included in revenue, with the associated expense included in product cost of goods sold. Ciena records revenue net of any associated sales taxes. Ciena recognizes revenue upon the transfer of control of promised products or services to a customer. Transfer of control occurs once the customer has the contractual right to use the product, generally upon shipment or delivery to the customer. Transfer of control can also occur over time for services such as software subscription, maintenance, installation, and various professional services as the customer receives the benefit over the contract term. Significant Judgments Revenue is allocated among performance obligations based on standalone selling price (“SSP”). SSP reflects the price at which Ciena would expect to sell that product or service on a stand-alone basis at contract inception and that Ciena would expect to be entitled to receive for the promised products or services. SSP is estimated for each distinct performance obligation, and judgment may be required in its determination. The best evidence of SSP is the observable price of a product or service when Ciena sells the products separately in similar circumstances and to similar customers. In instances where SSP is not directly observable, Ciena determines SSP using information that may include market conditions and other observable inputs. Ciena applies judgment in determining the transaction price, as Ciena may be required to estimate variable consideration when determining the amount of revenue to recognize. Variable consideration can include various rebate, cooperative marketing, and other incentive programs that Ciena offers to its distributors, partners and customers. When determining the amount of revenue to recognize, Ciena estimates the expected usage of these programs, applying the expected value or most likely estimate and updates the estimate at each reporting period as actual utilization data becomes available. Ciena also considers any customer right of return and any actual or potential payment of liquidated damages, contractual or similar penalties, or other claims for performance failures or delays in determining the transaction price, where applicable. When transfer of control is judged to be over time for installation and professional service arrangements, Ciena applies the input method to determine the amount of revenue to be recognized in a given period. Utilizing the input method, Ciena recognizes revenue based on the ratio of actual costs incurred to date to the total estimated costs expected to be incurred. Revenue for software subscription and maintenance is recognized ratably over the period during which the services are performed. Capitalized Contract Acquisition Costs Ciena has considered the impact of the guidance in ASC 340-40, Other Assets and Deferred Costs; Contracts with Customers, and the interpretations of the Financial Accounting Standards Board (“FASB”) Transition Resource Group for Revenue Recognition with respect to capitalization and amortization of incremental costs of obtaining a contract. In conjunction with this interpretation, Ciena considers each customer purchase in combination with the corresponding framework agreement, if applicable, as a contract. Ciena has elected to implement the practical expedient, which allows for incremental costs to be recognized as an expense when incurred if the period of the asset recognition is one year or less. If the period of the asset recognition is greater than one year, Ciena amortizes these costs over the period of performance. Ciena considers sales commissions incurred upon receipt of purchase orders placed by customers as incremental costs to obtain such purchase orders. The practical expedient method is applied to the purchase order as a whole and thus the capitalized costs of obtaining a purchase order is applied even if the purchase order contains more than one performance obligation. In cases where a purchase order includes various distinct products or services with both short-term (one year or less) and long-term (more than a year) performance periods, the cost of commissions incurred for the total value of the purchase order is capitalized and subsequently amortized as each performance obligation is recognized. For the additional disclosures on capitalized contract acquisition costs, see Note 2 below. Warranty Accruals Ciena provides for the estimated costs to fulfill customer warranty obligations upon recognition of the related revenue. Estimated warranty costs include estimates for material costs, technical support labor costs and associated overhead. Warranty is included in cost of goods sold and is determined based on actual warranty cost experience, estimates of component failure rates and management’s industry experience. Ciena’s sales contracts do not permit the right of return of the product by the customer after the product has been accepted. Allowance for Credit Losses for Accounts Receivable and Contract Assets Ciena estimates its allowances for credit losses using relevant available information from internal and external sources, related to past events, current conditions and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. When assessing for credit losses, Ciena determines collectability by pooling assets with similar characteristics. The allowances for credit losses are each measured on a collective basis when similar risk characteristics exist. The allowances for credit losses are each measured by multiplying the exposure probability of default (the probability the asset will default within a given time frame) by the loss given default rate (the percentage of the asset not expected to be collected due to default) based on the pool of assets. Probability of default rates are published by third-party credit rating agencies. Adjustments to Ciena’s exposure probability may take into account a number of factors, including, but not limited to, various customer-specific factors, the potential sovereign risk of the geographic locations in which the customer is operating and macroeconomic conditions. These factors are updated regularly or when facts and circumstances indicate that an update is deemed necessary. Accounts Receivable Factoring Ciena has entered into factoring agreements to sell certain receivables to unrelated third-party financial institution on a non-recourse basis. These transactions are accounted for in accordance with ASC Topic 860, “Transfers and Servicing” and result in a reduction in accounts receivable because the agreements transfer effective control over and risk related to the receivables to the buyers. Ciena's factoring agreements do not allow for recourse in the event of uncollectability, and Ciena does not retain any interest in the underlying accounts receivable once sold. Trade accounts receivables balances sold are removed from the consolidated balance sheets and cash received is reflected as cash provided by (used in) operating activities in the Consolidated Statements of Cash Flow. Factoring related interest expense is recorded to interest and other income (loss), net on the Consolidated Statements of Operations. See Note 9 below. Research and Development Ciena charges all research and development costs to expense as incurred. Types of expense incurred in research and development include employee compensation, prototype equipment, consulting and third-party services, depreciation, facility costs and information technology. Government Grants Ciena accounts for proceeds from government grants as a reduction of expense when there is reasonable assurance that Ciena has met the required conditions associated with the grant and that grant proceeds will be received. Grant benefits are recorded to the particular line item of the Consolidated Statement of Operations to which the grant activity relates. See Notes 3 below. Advertising Costs Ciena expenses all advertising costs as incurred. Legal Costs Ciena expenses legal costs associated with litigation as incurred. Share-Based Compensation Expense Ciena measures and recognizes compensation expense for share-based awards and employee stock purchases related to its Amended and Restated 2003 Employee Stock Purchase Plan (the “ESPP”) based on estimated fair values on the date of grant. Ciena estimates the fair value of employee stock purchases related to the ESPP using the Black-Scholes option-pricing model. Ciena recognizes the estimated fair value of restricted stock units subject only to service-based vesting conditions by multiplying the number of shares underlying the award by the closing price per share of Ciena common stock on the grant date. In each case, Ciena only recognizes expense in its Consolidated Statements of Operations for those restricted stock units that ultimately vest. Awards with performance-based vesting conditions (i) require the achievement of certain operational, financial or other performance criteria or targets or (ii) vest based on Ciena’s total stockholder return as compared to an index of peer companies, in whole or in part. Ciena recognizes the estimated fair value of restricted stock units subject to performance-based vesting conditions other than total stockholder return by assuming the satisfaction of any performance-based objectives at the “target” level and multiplying the corresponding number of shares earned based upon such achievement by the closing price per share of Ciena common stock on the grant date. Ciena recognizes the estimated fair value of performance based awards subject to total stockholder return as compared to an index of peer companies using a Monte Carlo simulation valuation model on the date of grant. At the end of each reporting period, Ciena reassesses the probability of achieving the performance targets and the performance period required to meet those targets. See Note 24 below. Stock Repurchase Program Shares repurchased pursuant to Ciena’s stock repurchase program are immediately retired upon purchase. Repurchased common stock is reflected as a reduction of stockholders’ equity. Ciena’s accounting policy related to its share repurchases is to reduce its common stock based on the par value of the shares and to reduce its capital surplus for the excess of the repurchase price over the par value. Since the inception of its stock repurchase programs, Ciena has had an accumulated deficit balance; therefore, the excess over the par value has been applied to additional paid-in capital. Once Ciena has retained earnings, the excess will be charged entirely to retained earnings. Income Taxes Ciena accounts for income taxes using an asset and liability approach. This approach recognizes deferred tax assets and liabilities (“DTA”) for the expected future tax consequences attributable to differences between the carrying amounts of assets and liabilities for financial reporting purposes and their respective tax bases, and for operating loss and tax credit carryforwards. In estimating future tax consequences, Ciena considers all expected future events other than the enactment of changes in tax laws or rates. Valuation allowances are provided if, based on the weight of the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. In the ordinary course of business, transactions occur for which the ultimate outcome may be uncertain. In addition, tax authorities periodically audit Ciena’s income tax returns. These audits examine significant tax filing positions, including the timing and amounts of deductions and the allocation of income tax expenses among tax jurisdictions. Ciena is currently under audit in India for 2012 through 2021, in Canada for 2014 through 2016 and 2020 through 2021, and in the United Kingdom for 2016 through 2020. Management does not expect the outcome of these audits to have a material adverse effect on Ciena’s consolidated financial position, results of operations or cash flows. Ciena’s major tax jurisdictions and the earliest open tax years are as follows: United States (2019), United Kingdom (2016), Canada (2014), and India (2012). Limited adjustments can be made to federal U.S. tax returns in earlier years in order to reduce net operating loss carryforwards. Ciena classifies interest and penalties related to uncertain tax positions as a component of income tax expense. Ciena has not provided for U.S. deferred income taxes on the cumulative unremitted earnings of its non-U.S. affiliates, as it plans to indefinitely reinvest these foreign earnings outside the U.S. As of October 29, 2022, the cumulative amount of such temporary differences for which a deferred tax liability has not been recognized totaled approximately $477.0 million. If these earnings were distributed to the U.S. in the form of dividends, or otherwise, or if the shares of the relevant foreign subsidiaries were sold or otherwise transferred, Ciena would be subject to additional U.S. income taxes (subject to an adjustment for foreign tax credits) and foreign withholding taxes. Ciena would also be subject to additional foreign withholding taxes of approximately $33.0 million. Additionally, there are no other significant temporary differences for which a deferred tax liability has not been recognized. Ciena is required to record excess tax benefits or tax deficiencies related to stock-based compensation as income tax benefit or expense when share-based awards vest or are settled. The Tax Cuts and Jobs Act (the “Tax Act”) includes provisions that affected Ciena starting in fiscal 2019, including a provision designed to tax global intangible low-taxed income (“GILTI”). An accounting policy choice is allowed to either treat taxes due on future U.S. inclusions related to GILTI in taxable income as a current-period expense when incurred (the “period cost method”) or factor such amounts into the measurement of deferred taxes (the “deferred method”). The calculation of the deferred balance with respect to the GILTI tax provisions will depend, in part, on analyzing global income to determine whether future U.S. inclusions in taxable income are expected related to GILTI and, if so, what the impact is expected to be. Ciena is electing to use the period cost method for future GILTI inclusions. Additionally, Ciena is electing to use the incremental cash tax savings approach when determining whether a valuation allowance needs to be recorded against the U.S. net operating loss (“NOL”) due to the GILTI inclusions. The Tax Act also introduced an alternative tax known as the base erosion and anti-abuse tax (“BEAT”). An accounting policy choice has been made to consider BEAT as a period cost when incurred. Loss Contingencies Ciena is subject to the possibility of various losses arising in the ordinary course of business. These may relate to disputes, litigation and other legal actions. Ciena considers the likelihood of loss or the incurrence of a liability, as well as Ciena’s ability to estimate the amount of loss reasonably, in determining loss contingencies. An estimated loss contingency is accrued when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Ciena regularly evaluates current information available to it in order to determine whether any accruals should be adjusted and whether new accruals are required. Fair Value of Financial Instruments The carrying value of Ciena’s cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximates fair market value due to the relatively short period of time to maturity. For information related to the fair value of Ciena’s short-term and long-term debt, see Note 19 below. Fair value for the measurement of financial assets and liabilities is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. Ciena utilizes a valuation hierarchy for disclosure of the inputs for fair value measurement. This hierarchy prioritizes the inputs into three broad levels as follows: •Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities; •Level 2 inputs are quoted prices for identical or similar assets or liabilities in less active markets or model-derived valuations in which significant inputs are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument; and •Level 3 inputs are unobservable inputs based on Ciena’s assumptions used to measure assets and liabilities at fair value. The fair values are determined based on model-based techniques using inputs Ciena could not corroborated with market data. By distinguishing between inputs that are observable in the marketplace, and therefore more objective, and those that are unobservable, and therefore more subjective, the hierarchy is designed to indicate the relative reliability of the fair value measurements. A financial asset’s or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. Restructuring From time to time, Ciena takes actions to align its workforce, facilities and operating costs with perceived market opportunities, business strategies and changes in market and business conditions and redesign business processes. Ciena recognizes a liability for the cost associated with an exit or disposal activity in the period in which the liability is incurred, except for one-time employee termination benefits related to a service period, typically of more than 60 days, which are accrued over the service period. See Note 5 below. Foreign Currency Certain of Ciena’s foreign branch offices and subsidiaries use the U.S. Dollar as their functional currency because Ciena Corporation, as the U.S. parent entity, exclusively funds the operations of these branch offices and subsidiaries. For those subsidiaries using the local currency as their functional currency, assets and liabilities are translated at exchange rates in effect at the balance sheet date, and the statement of operations is translated at a monthly average rate. Resulting translation adjustments are recorded directly to a separate component of stockholders’ equity. Where the monetary assets and liabilities are transacted in a currency other than the entity’s functional currency, re-measurement adjustments are recorded in interest and other income (loss), net on the Consolidated Statements of Operations. See Note 6 below. Derivatives From time to time, Ciena uses foreign currency forward contracts to reduce variability in certain forecasted non-U.S. Dollar denominated cash flows. Generally, these derivatives have maturities of 24 months or less. Ciena also has interest rate swap arrangements to reduce variability in certain forecasted interest expense associated with its term loan. All of these derivatives are designated as cash flow hedges. At the inception of the cash flow hedge, and on an ongoing basis, Ciena assesses whether the derivative has been effective in offsetting changes in cash flows attributable to the hedged risk during the hedging period. The derivative’s net gain or loss is initially reported as a component of accumulated other comprehensive income (loss), and upon occurrence of the forecasted transaction, is subsequently reclassified to the line item in the Consolidated Statements of Operations to which the hedged transaction relates. Ciena records derivative instruments in the Consolidated Statements of Cash Flows within operating, investing, or financing activities consistent with the cash flows of the hedged items. From time to time, Ciena uses foreign currency forward contracts to hedge certain balance sheet foreign exchange exposures. These forward contracts are not designated as hedges for accounting purposes, and any net gain or loss associated with these derivatives is reported in interest and other income (loss), net on the Consolidated Statements of Operations. See Notes 8 and 16 below. Computation of Net Income per Share Ciena calculates basic earnings per share by dividing earnings attributable to common stock by the weighted average number of common shares outstanding for the period. Diluted net income per potential common share (“Diluted EPS”) includes other potential dilutive shares that would be outstanding if securities or other contracts to issue common stock were exercised or converted into common stock. Ciena uses a dual presentation of basic net income per common share (“Basic EPS”) and Diluted EPS on the face of its income statement. A reconciliation of the numerator and denominator used for the Basic EPS and Diluted EPS computations is set forth in Note 21 below. Software Development Costs Ciena develops software for sale to its customers. GAAP requires the capitalization of certain software development costs that are incurred subsequent to the date technological feasibility is established and prior to the date the product is generally available for sale. The capitalized cost is then amortized using the straight-line method over the estimated life of the product. Ciena defines technological feasibility as being attained at the time a working model is completed. To date, the period between Ciena achieving technological feasibility and the general availability of such software has been short, and software development costs qualifying for capitalization have been insignificant. Accordingly, Ciena has not capitalized any software development costs. Newly Issued Accounting Standards - Effective In June 2016, the FASB issued Accounting Standards Update No. 2016-13 (“ASU 2016-13”), Financial Instruments - Credit Losses, which requires measurement and recognition of expected credit losses for financial assets held based on historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Ciena adopted ASU 2016-13 on a modified retrospective basis in the first quarter of fiscal 2021 through a cumulative-effect adjustment at the beginning of the period of adoption and did not restate prior periods. The standard primarily impacts the value of Ciena’s accounts receivable, net and contract assets for unbilled accounts receivable, net. Adoption of ASU 2016-13 did not have a material effect on Ciena’s financial position or results of operations. In December 2019, the FASB issued ASU No. 2019-12 (“ASU 2019-12”), Income Taxes (ASC 740): Simplifying the Accounting for Income Taxes, which simplifies the accounting for income taxes by removing certain exceptions to the general principles in ASC 740. The amendments also improve consistent application of and simplify GAAP for other areas of ASC 740 by clarifying and amending existing guidance. Most amendments within this standard are required to be applied on a prospective basis, while certain amendments must be applied on a retrospective or modified retrospective basis. Ciena adopted ASU 2019-12 on a prospective basis in the first quarter of fiscal 2022. The adoption of ASU 2019-12 did not have a material impact on Ciena’s consolidated financial statements and related disclosures. In March 2020, the FASB issued ASU No. 2020-04 (“ASU 2020-04”), Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2020-04 provides temporary optional guidance on contract modifications and hedging accounting to ease the financial reporting burdens of the expected market transition from the London Interbank Offered Rate (“LIBOR”) to alternative reference rates. In January 2021, the FASB issued ASU 2021-01, which refines the scope of Topic 848 and clarifies some of its guidance as part of the FASB’s monitoring of global reference rate activities. The new guidance was effective upon issuance, and Ciena is allowed to elect to apply the amendments prospectively through December 31, 2022. Ciena adopted ASU 2020-04 and ASU 2021-01 on a prospective basis in fiscal 2022. The adoption of ASU 2020-04 and ASU 2021-01 did not have a material impact on Ciena’s consolidated financial statements and related disclosures. In November 2021, the FASB issued ASU No. 2021-10 (“ASU 2021-10”), Government Assistance, to increase transparency of government assistance including the disclosure of (1) the types of assistance, (2) an entity’s accounting for the assistance, and (3) the effect of the assistance on an entity’s financial statements. ASU 2021-10 is effective for annual periods beginning after December 15, 2021. Early adoption is permitted. Ciena early adopted ASU 2021-10 during fiscal 2022. The adoption of ASU 2021-10 did not have a material impact on Ciena’s consolidated financial statements and related disclosures. Newly Issued Accounting Standards - Not Yet Effective In October 2021, the FASB issued ASU No. 2021-08 (“ASU 2021-08”), Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers to improve the accounting for acquired revenue contracts with customers in a business combination to address recognition of an acquired contract liability and payment terms and their effect on subsequent revenue recognized by the acquirer. ASU 2021-08 is effective for annual periods beginning after December 15, 2022 on a prospective basis. Early adoption is permitted. Ciena is currently evaluating the impact of this accounting standard update on its consolidated financial statements and related disclosures.

REVENUE

12 Months Ended

Oct. 29, 2022

Revenue from Contract with Customer [Abstract]

REVENUE

Disaggregation of Revenue

Ciena’s disaggregated revenue as presented below depicts the nature, amount, and timing of revenue and cash flows for similar groupings of Ciena’s various offerings. The sales cycle, contractual obligations, customer requirements, and go-to-market strategies may differ for each of its product categories, resulting in different economic risk profiles for each category.

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


	Year Ended October 29, 2022
	Networking Platforms		Platform Software and Services		Blue Planet Automation Software and Services		Global Services		Total
Product lines:
Converged Packet Optical	$	2,379,931	$	—	$	—	$	—	$	2,379,931
Routing and Switching	398,439		—		—		—		398,439
Platform Software and Services	—		277,191		—		—		277,191
Blue Planet Automation Software and Services	—		—		76,567		—		76,567
Maintenance Support and Training	—		—		—		292,375		292,375
Installation and Deployment	—		—		—		157,443		157,443
Consulting and Network Design	—		—		—		50,715		50,715
Total revenue by product line	$	2,778,370	$	277,191	$	76,567	$	500,533	$	3,632,661

Timing of revenue recognition:
Products and services at a point in time	$	2,778,370	$	85,691	$	25,540	$	44,091	$	2,933,692
Products and services transferred over time	—		191,500		51,027		456,442		698,969
Total revenue by timing of revenue recognition	$	2,778,370	$	277,191	$	76,567	$	500,533	$	3,632,661


	Year Ended October 30, 2021
	Networking Platforms		Platform Software and Services		Blue Planet Automation Software and Services		Global Services		Total
Product lines:
Converged Packet Optical	$	2,553,509	$	—	$	—	$	—	$	2,553,509
Routing and Switching	271,796		—		—		—		271,796
Platform Software and Services	—		229,588		—		—		229,588
Blue Planet Automation Software and Services	—		—		77,247		—		77,247
Maintenance Support and Training	—		—		—		283,350		283,350
Installation and Deployment	—		—		—		171,489		171,489
Consulting and Network Design	—		—		—		33,705		33,705
Total revenue by product line	$	2,825,305	$	229,588	$	77,247	$	488,544	$	3,620,684

Timing of revenue recognition:
Products and services at a point in time	$	2,825,305	$	80,359	$	27,621	$	14,923	$	2,948,208
Products and services transferred over time	—		149,229		49,626		473,621		672,476
Total revenue by timing of revenue recognition	$	2,825,305	$	229,588	$	77,247	$	488,544	$	3,620,684


	Year Ended October 31, 2020
	Networking Platforms		Platform Software and Services		Blue Planet Automation Software and Services		Global Services		Total
Product lines:
Converged Packet Optical	$	2,547,647	$	—	$	—	$	—	$	2,547,647
Routing and Switching	267,416		—		—		—		267,416
Platform Software and Services	—		197,809		—		—		197,809
Blue Planet Automation Software and Services	—		—		62,632		—		62,632
Maintenance Support and Training	—		—		—		269,354		269,354
Installation and Deployment	—		—		—		152,003		152,003
Consulting and Network Design	—		—		—		35,296		35,296
Total revenue by product line	$	2,815,063	$	197,809	$	62,632	$	456,653	$	3,532,157

Timing of revenue recognition:
Products and services at a point in time	$	2,815,063	$	69,099	$	19,583	$	14,363	$	2,918,108
Products and services transferred over time	—		128,710		43,049		442,290		614,049
Total revenue by timing of revenue recognition	$	2,815,063	$	197,809	$	62,632	$	456,653	$	3,532,157

Ciena reports its sales geographically around the following markets: (i) the United States, Canada, the Caribbean and Latin America (“Americas”); (ii) Europe, Middle East and Africa (“EMEA”); and (iii) Asia Pacific, Japan and India (“APAC”). Within each geographic area, Ciena maintains specific teams or personnel that focus on a particular region, country, customer or market vertical. These teams include sales management, account salespersons and sales engineers, as well as services professionals and commercial management personnel. The following table reflects Ciena’s geographic distribution of revenue principally based on the relevant location for Ciena’s delivery of products and performance of services.

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


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Geographic distribution:
Americas	$	2,636,840	$	2,525,619	$	2,469,278
EMEA	555,215		670,462		591,468
APAC	440,606		424,603		471,411
Total revenue by geographic distribution	$	3,632,661	$	3,620,684	$	3,532,157

Ciena’s revenue includes United States revenue of $2.42 billion for fiscal 2022, $2.27 billion for fiscal 2021 and $2.25 billion for fiscal 2020. No other country accounted for 10% or more of total revenue for the periods presented above.

For the periods below, the only customers that accounted for at least 10% of Ciena’s revenue were as follows (in thousands):


	October 29, 2022		October 30, 2021		October 31, 2020
AT&T	$	433,418	$	447,403	$	373,163
Verizon	402,787		n/a		n/a

Total	$	836,205	$	447,403	$	373,163

________________________________


n/a			Denotes revenue representing less than 10% of total revenue for the period

The customers identified above purchased products and services from each of Ciena’s operating segments.

While Ciena has benefited from the diversification of its business and customer base, its ten largest customers contributed 56.3% of fiscal 2022 revenue, 55.5% of fiscal 2021 revenue and 54.5% of fiscal 2020 revenue.

◦Networking Platforms revenue reflects sales of Ciena’s Converged Packet Optical and Routing and Switching product lines.

▪Converged Packet Optical - includes the 6500 Packet-Optical Platform, the Waveserver® modular interconnect system, the 6500 Reconfigurable Line System (RLS), the 5400 family of Packet-Optical Platforms, and the Coherent ELS open line system (OLS). This product line includes the WL5n 100G-400G coherent pluggable transceivers. This product line also includes sales of the Z-Series Packet-Optical Platform.

▪Routing and Switching - includes the 3000 family of service delivery platforms and the 5000 family of service aggregation. This product line also includes the 6500 Packet Transport System (PTS), which combines packet switching, control plane operation, and integrated optics, the 8100 Coherent Routing platforms, and the 8700 Packetwave Platform. This product line also includes the Vyatta (as defined in Note 4 below) virtual routing and switching products acquired from AT&T during the first quarter of fiscal 2022.

The Networking Platforms segment also includes sales of operating system software and enhanced software features embedded in each of the product lines above. Revenue from this segment is included in product revenue on the Consolidated Statements of Operations. Operating system software and enhanced software features embedded in Ciena hardware are each considered distinct performance obligations for which the revenue is generally recognized upfront at a point in time upon transfer of control.

◦Platform Software and Services offerings provide domain control management, analytics, data and planning tools and applications to assist customers in managing their networks, including by creating more efficient operations and more proactive visibility into their networks. Ciena’s platform software includes its MCP domain controller solution, its suite of MCP applications, and its OneControl Unified Management System, as well as planning tools and a number of legacy software solutions that support Ciena’s installed base of network solutions. Platform software-related services revenue includes sales of subscription, installation, support, and consulting services related to Ciena’s software platforms, operating system software and enhanced software features embedded in each of the Networking Platforms product lines above. Revenue from the software portion of this segment is included in product revenue on the Consolidated Statements of Operations. Revenue from services portions of this segment is included in services revenue on the Consolidated Statements of Operations.

◦Blue Planet® Automation Software and Services is a comprehensive, cloud native, and standards-based software portfolio, together with related services, that enables customers to realize digital transformation through the automation of the services lifecycle. Ciena’s Blue Planet Automation Platform includes multi-domain service orchestration (MDSO), inventory management (BPI), route optimization and analysis (ROA), network function virtualization orchestration (NFVO), and unified assurance and analytics (UAA). Services revenue includes sales of subscription, installation, support, consulting and design services related to Ciena’s Blue Planet Automation Platform. Revenue from the software portion of this segment is included in product revenue on the Consolidated Statements of Operations. Revenue from services portions of this segment is included in services revenue on the Consolidated Statements of Operations.

Ciena’s software platform revenue typically reflects either perpetual or term-based software licenses, and these sales are considered distinct performance obligations where revenue is generally recognized upfront at a point in time upon transfer of control. Revenue from software subscription and support is recognized ratably over the period during which the services are performed. Revenue from professional services for solution customization, software and solution support services, consulting and design, and build-operate-transfer services relating to Ciena’s software offerings is recognized over time with Ciena applying the input method to determine the amount of revenue to be recognized in a given period.

◦Global Services revenue reflects sales of a broad range of Ciena’s services for maintenance support and training, installation and deployment, and consulting and network design activities. Revenue from this segment is included in services revenue on the Consolidated Statements of Operations.

Ciena’s Global Services are considered a distinct performance obligation where revenue is generally recognized over time. Revenue from maintenance support is recognized ratably over the period during which the services are performed. Revenue from installation and deployment services and consulting and network design services is recognized over time with Ciena applying the input method to determine the amount of revenue to be recognized in a given period. Revenue from training services is generally recognized at a point in time upon completion of the service.

Contract Balances

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


	Balance at October 29, 2022		Balance at October 30, 2021
Accounts receivable, net	$	920,772	$	884,958
Contract assets for unbilled accounts receivable, net	$	156,039	$	101,355
Deferred revenue	$	200,235	$	175,464

Ciena’s contract assets represent unbilled accounts receivable, net, where transfer of a product or service has occurred but invoicing is conditional upon completion of future performance obligations. These amounts are primarily related to installation and deployment and professional services arrangements where transfer of control has occurred, but Ciena has not yet invoiced the customer. Contract assets are included in prepaid expenses and other in the Consolidated Balance Sheets. See Note 11 below.

Contract liabilities consist of deferred revenue and represent advanced payments against non-cancelable customer orders received prior to revenue recognition. Ciena recognized approximately $111.3 million and $106.5 million of revenue during fiscal 2022 and 2021, respectively, that was included in the deferred revenue balance at October 29, 2022 and October 30, 2021, respectively. Revenue recognized due to changes in transaction price from performance obligations satisfied or partially satisfied in previous periods was immaterial during fiscal 2022 and 2021.

Capitalized Contract Acquisition Costs

Capitalized contract acquisition costs consist of deferred sales commissions and were $39.7 million and $27.6 million as of October 29, 2022 and October 30, 2021, respectively, and are included in prepaid expenses and other and other long-term assets. The amortization expense associated with these costs was $27.3 million and $24.6 million during fiscal 2022 and fiscal 2021, respectively, and are included in sales and marketing expense on the Consolidated Statements of Operations.

Remaining Performance Obligations

Remaining Performance Obligations (“RPO”) are comprised of non-cancelable customer purchase orders for products and services that are awaiting transfer of control for revenue recognition under the applicable contract terms. As of October 29, 2022, the aggregate amount of RPO was $2.8 billion. As of October 29, 2022, Ciena expects approximately 91% of the RPO to be recognized as revenue within the next twelve months.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI https://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045

+ Details

CANADIAN EMERGENCY WAGE SUBSIDY

12 Months Ended

Oct. 29, 2022

Unusual or Infrequent Items, or Both [Abstract]

CANADIAN EMERGENCY WAGE SUBSIDY

In April 2020, the Canadian government introduced the Canada Emergency Wage Subsidy (“CEWS”) to help employers offset a portion of their employee wages for a limited period in response to the COVID-19 outbreak, retroactive to March 15, 2020. The CEWS program expired in October 2021. The subsidy covered employers of all sizes and across all sectors.

Ciena accounts for proceeds from government grants as a reduction of expense when there is reasonable assurance that Ciena has met the required conditions associated with the grant and that grant proceeds will be received. Grant benefits are recorded to the particular line item of the Consolidated Statements of Operations to which the grant activity relates. Amounts from the CEWS program positively impacted Ciena’s operating expense and measures of profit in the year ended October 30, 2021. For the fiscal year ended October 30, 2021, Ciena recorded a CAD$52.2 million ($41.3 million) benefit, net of certain fees, related to CEWS for claim periods beginning March 15, 2020, including CAD$43.9 million ($35.4 million) related to employee wages during fiscal 2020. There was no CEWS activity in fiscal 2020 or 2022.

The following table summarizes CEWS for the period indicated (in thousands):


	Year Ended October 30, 2021

Product	$	4,283
Service	2,667
CEWS benefit in cost of goods sold	6,950
Research and development	29,519
Sales and marketing	2,604
General and administrative	2,207
CEWS benefit in operating expense	34,330
Total CEWS benefit	$	41,280

BUSINESS COMBINATIONS

12 Months Ended

Oct. 29, 2022

Business Combination and Asset Acquisition [Abstract]

BUSINESS COMBINATIONS

Fiscal 2022 Acquisitions: Vyatta and Xelic

On November 1, 2021, Ciena acquired AT&T’s Vyatta Software Technology (“Vyatta”), a provider of software-based virtual routing and switching technology. AT&T is a customer of Ciena, see Note 2 above. On March 9, 2022, Ciena acquired Xelic, Inc., a provider and developer of field programmable gate array (FPGA) and application-specific integrated circuit (ASIC) technology and optical networking IP cores. These businesses were acquired for an aggregate of approximately $64.1 million, of which $63.3 million was paid in cash and $0.8 million represents a future payable arrangement. These transactions have each been accounted for as the acquisition of a business.

Ciena incurred approximately $1.7 million in acquisition-related costs associated with these acquisitions. These costs and expenses primarily include fees associated with financial, legal and accounting advisors. These costs were recorded in acquisition and integration costs in the Consolidated Statements of Operations.

The following table summarizes the final purchase price allocation related to the acquisitions based on the estimated fair value of the acquired assets and assumed liabilities (in thousands):


	Amount
Cash and cash equivalents	$	201
Prepaid expenses and other	1,614
Equipment, furniture and fixtures	694
Customer relationships and contracts	15,800
Developed technology	32,491
Goodwill	17,698
Accrued liabilities	(4,434)
Total purchase consideration	$	64,064

Customer relationships and contracts represent agreements with existing Vyatta customers and have an estimated useful life of two years.

Developed technology represents purchased technology that has reached technological feasibility and for which the acquired companies had substantially completed development as of the date of acquisition. Fair value was determined using future discounted cash flows related to the projected income stream of the developed technology for a discrete projection period. Cash flows were discounted to their present value as of the closing date. Developed technology is amortized on a straight-line basis over its estimated useful life of five years.

The goodwill generated from these acquisitions are primarily related to expected economic synergies. The total goodwill amount was recorded in the Networking Platforms segment. The goodwill is not deductible for income tax purposes.

Pro forma disclosures have not been included due to immateriality. The amounts of revenue and earnings for these acquisitions since the acquisition dates, which are included in the Consolidated Statements of Operations for the reporting period are immaterial.

Fiscal 2020 Acquisitions: Centina Systems, Inc.

On November 2, 2019, Ciena acquired Centina Systems, Inc. (“Centina”), a provider of service assurance analytics and network performance management solutions, for approximately $34.0 million in cash. This transaction has been accounted for as the acquisition of a business.

The following table summarizes the final purchase price allocation related to the acquisition based on the estimated fair value of the acquired assets and assumed liabilities (in thousands):


	Amount
Cash and cash equivalents	$	5,718
Accounts receivable	610
Prepaid expenses and other	536
Equipment, furniture and fixtures	17
Goodwill	13,055
Customer relationships and contracts	400
Developed technology	22,200
Accounts payable	(47)
Accrued liabilities	(286)
Deferred revenue	(1,493)
Deferred tax liability	(6,692)
Total purchase consideration	$	34,018

Customer relationships and contracts represent agreements with existing Centina customers and have an estimated useful life of two years.

Developed technology represents purchased technology that has reached technological feasibility and for which Centina had substantially completed development as of the date of acquisition. Fair value was determined using future discounted cash flows related to the projected income stream of the developed technology for a discrete projection period. Cash flows were discounted to their present value as of the closing date. Developed technology is amortized on a straight-line basis over its estimated useful life of five years.

The goodwill generated from the acquisition of Centina is primarily related to expected economic synergies. The total goodwill amount was recorded in the Blue Planet Automation Software and Services segment. The goodwill is not deductible for income tax purposes.

Pro forma disclosures have not been included due to immateriality.

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS

12 Months Ended

Oct. 29, 2022

Restructuring and Related Activities [Abstract]

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTSCiena has undertaken a number of restructuring activities intended to reduce expense and align its workforce and costs with market opportunities, product development and business strategies. The following table sets forth the restructuring activity and balance of the restructuring liability accounts, which are included in accrued liabilities and other short-term obligations on Ciena’s Consolidated Balance Sheets, for the fiscal years indicated (in thousands):


	Workforce reduction			Other restructuring activities			Total
Balance at November 2, 2019	$	3,983		$	11,160		$	15,143
Charges	7,282		(1)	15,370		(2)	22,652
Adjustments related to ASC 842	—			(11,160)		(3)	(11,160)

Cash payments	(8,350)			(15,370)			(23,720)
Balance at October 31, 2020	2,915			—			2,915
Charges	5,938		(1)	23,627		(2)	29,565


Cash payments	(8,072)			(23,627)			(31,699)
Balance at October 30, 2021	781			—			781
Charges	3,156		(1)	26,814		(2)	29,970


Cash payments	(2,722)			(22,194)			(24,916)
Balance at October 29, 2022	$	1,215		$	4,620		$	5,835
Current restructuring liabilities	$	1,215		$	4,620		$	5,835

_________________________________

(1) Reflects employee costs associated with workforce reductions as part of a business optimization strategy to improve gross margin, constrain operating expense and redesign certain business processes.

(2) Primarily represents the redesign of certain business processes associated with Ciena’s supply chain and distribution structure reorganization and costs related to restructured real estate facilities.

(3) Represents restructuring reserve liability recognized as a reduction to Operating ROU assets, net in relation to adoption of ASC 842.

Significant Asset Impairments

In February 2022, armed conflict escalated between Russia and Ukraine. The United States and certain other countries have imposed sanctions on Russia and could impose further sanctions. On March 7, 2022, Ciena announced its decision to suspend its business operations in Russia immediately. As a result, Ciena recorded impairment charges of approximately $3.8 million of which $1.8 million was a provision for credit losses.

INTEREST AND OTHER INCOME (LOSS), NET

12 Months Ended

Oct. 29, 2022

Other Income and Expenses [Abstract]

INTEREST AND OTHER INCOME (LOSS), NET

The components of interest and other income (loss), net, were as follows (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Interest income	$	10,060	$	2,051	$	6,860
Gains (losses) on non-hedge designated foreign currency forward contracts	(4,018)		11,172		5,551
Foreign currency exchange gains (losses)	2,501		(14,622)		(13,022)

Unrealized gain on cost method equity investment	4,120		—		2,681
Other	(5,916)		(369)		(1,106)
Interest and other income (loss), net	$	6,747	$	(1,768)	$	964

Ciena Corporation, as the U.S. parent entity, uses the U.S. Dollar as its functional currency; however, some of its foreign branch offices and subsidiaries use the local currency as their functional currency. During fiscal 2022, Ciena recorded $2.5 million in exchange rate gains as a result of monetary assets and liabilities that were transacted in a currency other than the entity’s functional currency. During fiscal 2021 and 2020, Ciena recorded $14.6 million and $13.0 million, respectively, in exchange rate losses as a result of monetary assets and liabilities that were transacted in a currency other than the entity’s functional currency. The related remeasurement adjustments were recorded in interest and other income (loss), net on the Consolidated Statements of Operations. From time to time, Ciena uses foreign currency forwards to hedge certain of these balance sheet exposures. These forwards are not designated as hedges for accounting purposes, and any net gain or loss associated with these derivatives is also reported in interest and other income (loss), net on the Consolidated Statements of

Operations. During fiscal 2022, Ciena recorded losses of $4.0 million from non-hedge designated foreign currency forward contracts. During fiscal 2021 and fiscal 2020, Ciena recorded gains of $11.2 million and $5.6 million, respectively, from non-hedge designated foreign currency forward contracts. During fiscal 2022 and fiscal 2020, Ciena recorded an unrealized gain of $4.1 million and $2.7 million, respectively, on its cost method equity investment.

CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS

12 Months Ended

Oct. 29, 2022

Investments, Debt and Equity Securities [Abstract]

CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS

As of the dates indicated, investments classified as available-for-sale are comprised of the following (in thousands):


	October 29, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. government obligations	$	137,963	$	—	$	(3,379)	$	134,584
Corporate debt securities	54,899		1		(405)		54,495
Time deposits	55,889		—		(64)		55,825
	$	248,751	$	1	$	(3,848)	$	244,904

Included in cash equivalents	$	55,530	$	—	$	—	$	55,530
Included in short-term investments	156,430		1		(2,442)		153,989
Included in long-term investments	36,791		—		(1,406)		35,385
	$	248,751	$	1	$	(3,848)	$	244,904


	October 30, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. government obligations	$	251,713	$	5	$	(197)	$	251,521

Time deposits	71,226		—		—		71,226
	$	322,939	$	5	$	(197)	$	322,747

Included in cash equivalents	$	71,226	$	—	$	—	$	71,226
Included in short-term investments	181,488		5		(10)		181,483
Included in long-term investments	70,225		—		(187)		70,038
	$	322,939	$	5	$	(197)	$	322,747

The following table summarizes the legal maturities of debt investments at October 29, 2022 (in thousands):


	October 29, 2022
	Amortized Cost		Estimated Fair Value
Less than one year	$	211,960	$	209,519
Due in 1-2 years	36,791		35,385
	$	248,751	$	244,904

FAIR VALUE MEASUREMENTS

12 Months Ended

Oct. 29, 2022

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTSAs of the dates indicated, the following tables summarize the fair value of assets and liabilities that were recorded at fair value on a recurring basis (in thousands):


	October 29, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	639,024	$	—	$	—	$	639,024
Bond mutual fund	71,145		—		—		71,145
Time deposits	55,825		—		—		55,825
Deferred compensation plan assets	12,751		—		—		12,751
U.S. government obligations	—		134,584		—		134,584
Corporate debt securities	—		54,495		—		54,495
Foreign currency forward contracts	—		251		—		251
Forward starting interest rate swaps	—		12,306		—		12,306
Total assets measured at fair value	$	778,745	$	201,636	$	—	$	980,381

Liabilities:
Foreign currency forward contracts	$	—	$	15,605	$	—	$	15,605

Total liabilities measured at fair value	$	—	$	15,605	$	—	$	15,605


	October 30, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	1,120,851	$	—	$	—	$	1,120,851
Bond mutual fund	75,425		—		—		75,425
Time deposits	71,226		—		—		71,226
Deferred compensation plan assets	12,968		—		—		12,968
U.S. government obligations	—		251,521		—		251,521

Foreign currency forward contracts	—		14,935		—		14,935
Total assets measured at fair value	$	1,280,470	$	266,456	$	—	$	1,546,926

Liabilities:
Foreign currency forward contracts	$	—	$	716	$	—	$	716
Forward starting interest rate swaps	—		15,928		—		15,928

Total liabilities measured at fair value	$	—	$	16,644	$	—	$	16,644

As of the dates indicated, the assets and liabilities above were presented on Ciena’s Consolidated Balance Sheets as follows (in thousands):


	October 29, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	757,725	$	7,974	$	—	$	765,699
Short-term investments	8,269		145,720		—		153,989
Prepaid expenses and other	—		251		—		251
Long-term investments	—		35,385		—		35,385
Other long-term assets	12,751		12,306		—		25,057
Total assets measured at fair value	$	778,745	$	201,636	$	—	$	980,381

Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	15,605	$	—	$	15,605


Total liabilities measured at fair value	$	—	$	15,605	$	—	$	15,605


	October 30, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	1,267,502	$	—	$	—	$	1,267,502
Short-term investments	—		181,483		—		181,483
Prepaid expenses and other	—		14,935		—		14,935
Long-term investments	—		70,038		—		70,038
Other long-term assets	12,968		—		—		12,968
Total assets measured at fair value	$	1,280,470	$	266,456	$	—	$	1,546,926

Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	716	$	—	$	716
Other long-term obligations	—		15,928		—		15,928
Total liabilities measured at fair value	$	—	$	16,644	$	—	$	16,644

Ciena did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

ACCOUNTS RECEIVABLE

12 Months Ended

Oct. 29, 2022

Receivables [Abstract]

ACCOUNTS RECEIVABLE

As of October 29, 2022, two customers accounted for 13.0% and 11.0% of net accounts receivable, respectively. As of October 30, 2021, two customers accounted for 15.0% and 10.0% of net accounts receivable, respectively. Ciena has not historically experienced a significant amount of bad debt expense. The following table summarizes the activity in Ciena’s allowance for credit losses for the fiscal years indicated (in thousands):


Year Ended	Beginning Balance		Effect of adoption of new accounting standard (Note 1)		Provisions		Net Deductions		Ending Balance
October 31, 2020(1)	$	20,101	$	—	$	8,855	$	18,358	$	10,598
October 30, 2021	$	10,598	$	2,206	$	2,346	$	4,238	$	10,912
October 29, 2022(2)	$	10,912	$	—	$	4,199	$	4,153	$	10,958

(1)The net deduction in Ciena’s allowance for credit losses as of October 31, 2020 is primarily due to the final settlement from a significant asset impairment of $12.2 million for a trade receivable related to a single customer in the APAC region recorded in fiscal 2017.

(2)On March 7, 2022, Ciena announced its decision to suspend its business operations in Russia immediately. As a result, Ciena’s allowance for doubtful accounts includes a provision for a significant asset impairment of $1.8 million for a trade receivable related to this decision.

Accounts Receivable Factoring

During fiscal 2022, the gross amount of trade accounts receivables sold totaled approximately $11.8 million. Prior to the start of fiscal 2022, Ciena had not entered into any factoring arrangements. Factoring related interest expense recorded to interest and other income (loss), net was $0.6 million for fiscal 2022.

INVENTORIES

12 Months Ended

Oct. 29, 2022

Inventory Disclosure [Abstract]

INVENTORIES

As of the dates indicated, inventories are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Raw materials	$	664,916	$	175,399
Work-in-process	18,232		10,260
Finished goods	258,584		180,800
Deferred cost of goods sold	41,084		44,765
Gross inventories	982,816		411,224
Reserve for excess and obsolescence	(36,086)		(36,959)
Inventories, net	$	946,730	$	374,265

Ciena has been expanding its manufacturing capacity and accumulating raw materials inventory of components that are available, in some cases with expanded lead times, in an effort to prepare Ciena to produce finished goods more quickly when supply constraints ease for certain common components, including integrated circuit components, for which delivery continues to be delayed. The increase in raw materials inventory is related to these steps to mitigate the impact of current supply chain constraints and the global market shortage of semiconductor parts.

Ciena makes estimates about future customer demand for its products when establishing the appropriate reserve for excess and obsolete inventory. For fiscal 2022, future demand was calculated primarily based on customer backlog. Generally, Ciena’s customers may cancel or change their orders with limited advance notice, or they may decide not to accept its products and services, although instances of both cancellation and non-acceptance are rare. Ciena writes down its inventory for estimated obsolescence or unmarketable inventory by an amount equal to the difference between the cost of inventory and the estimated net realizable value based on assumptions about future demand, which are affected by changes in Ciena’s strategic direction, discontinuance of a product or introduction of newer versions of products, declines in the sales of or forecasted demand for certain products, and general market conditions. During fiscal 2022, fiscal 2021 and fiscal 2020, Ciena recorded a provision for excess and obsolescence of $16.2 million, $17.9 million, and $24.7 million, respectively, primarily related to a decrease in the forecasted demand for certain Networking Platforms products. Deductions from the provision for excess and obsolete inventory relate primarily to the sale of previously reserved items and disposal activities.

The following table summarizes the activity in Ciena’s reserve for excess and obsolete inventory for the fiscal years indicated (in thousands):


Year Ended	Beginning Balance		Provisions		Disposals		Ending Balance
October 31, 2020	$	47,322	$	24,701	$	32,386	$	39,637
October 30, 2021	$	39,637	$	17,850	$	20,528	$	36,959
October 29, 2022	$	36,959	$	16,184	$	17,057	$	36,086

PREPAID EXPENSES AND OTHER

12 Months Ended

Oct. 29, 2022

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

PREPAID EXPENSES AND OTHER

PREPAID EXPENSES AND OTHERAs of the dates indicated, prepaid expenses and other are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Contract assets for unbilled accounts receivable, net	$	156,039	$	101,355
Prepaid VAT and other taxes	63,975		77,388
Prepaid expenses	55,440		62,189
Product demonstration equipment, net	35,929		29,362
Capitalized contract acquisition costs	33,516		21,753
Other non-trade receivables	24,026		18,408
Deferred deployment expense	877		264

Derivative assets	251		14,935


	$	370,053	$	325,654

Depreciation of product demonstration equipment was $8.7 million, $9.8 million and $9.0 million for fiscal 2022, 2021 and 2020, respectively.

For further discussion on contract assets and capitalized contract acquisition costs, see Note 2 above.

EQUIPMENT, BUILDING, FURNITURE AND FIXTURES

12 Months Ended

Oct. 29, 2022

Property, Plant and Equipment [Abstract]

EQUIPMENT, BUILDING, FURNITURE AND FIXTURES

As of the dates indicated, equipment, building, furniture and fixtures are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Equipment, furniture and fixtures	$	619,160	$	599,672
Building subject to finance lease	69,247		76,123
Leasehold improvements	80,415		100,270
Equipment, building, furniture and fixtures	768,822		776,065
Accumulated depreciation and amortization	(501,043)		(491,097)
Equipment, building, furniture and fixtures, net	$	267,779	$	284,968

During fiscal 2022, fiscal 2021 and fiscal 2020, Ciena recorded depreciation of equipment, building, furniture and fixtures, and amortization of leasehold improvements of $87.2 million, $86.5 million and $84.9 million, respectively.

INTANGIBLE ASSETS

12 Months Ended

Oct. 29, 2022

Intangible Assets, Net (Excluding Goodwill) [Abstract]

INTANGIBLE ASSETS

As of the dates indicated, intangible assets are comprised of the following (in thousands):


	October 29, 2022						October 30, 2021
	Gross Intangible		Accumulated Amortization		Net Intangible		Gross Intangible		Accumulated Amortization		Net Intangible
Developed technology	$	428,218	$	(386,300)	$	41,918	$	395,726	$	(359,828)	$	35,898

Patents and licenses	8,415		(4,228)		4,187		7,815		(3,321)		4,494
Customer relationships, covenants not to compete, outstanding purchase orders and contracts	390,271		(366,859)		23,412		375,329		(350,407)		24,922
Total intangible assets	$	826,904	$	(757,387)	$	69,517	$	778,870	$	(713,556)	$	65,314

The aggregate amortization expense of intangible assets was $44.3 million, $36.0 million and $38.6 million for fiscal 2022, fiscal 2021 and fiscal 2020, respectively. Expected future amortization of intangible assets for the fiscal years indicated is as follows (in thousands):


Fiscal Year	Amount
2023	$	28,828
2024	19,194
2025	13,337
2026	7,191
2027	709
Thereafter	258
	$	69,517

GOODWILL

12 Months Ended

Oct. 29, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL

The following table presents the goodwill allocated to Ciena’s operating segments as of October 29, 2022 and October 30, 2021, as well as the changes to goodwill during fiscal 2022 (in thousands):


	Balance at October 30, 2021		Acquisitions		Translation		Balance at October 29, 2022
Platform Software and Services	$	156,191	$	—	$	—	$	156,191
Blue Planet Automation Software and Services	89,049		—		—		89,049
Networking Platforms	66,405		17,698		(1,021)		83,082
Total	$	311,645	$	17,698	$	(1,021)	$	328,322

OTHER BALANCE SHEET DETAILS

12 Months Ended

Oct. 29, 2022

Balance Sheet Related Disclosures [Abstract]

OTHER BALANCE SHEET DETAILS

As of the dates indicated, other long-term assets are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Maintenance spares inventory, net	$	44,815	$	55,696
Cost method equity investments(1)	20,698		8,578
Deferred compensation plan assets	12,751		12,968
Forward starting interest rate swaps	12,306		—
Capitalized contract acquisition costs	6,151		5,803
Deferred debt issuance costs, net(2)	781		1,188
Restricted cash	26		58

Other	16,089		15,600
	$	113,617	$	99,891

(1)Ciena recorded an unrealized gain of $4.1 million to the carrying value of its cost method equity investment to interest and other income (loss), net on the Consolidated Statements of Operations during the first quarter of fiscal 2022.

(2) Deferred debt issuance costs relate to Ciena’s senior secured asset-based revolving credit facility (the “ABL Credit Facility”) entered into during fiscal 2019 and its predecessor credit facility (described in Note 20 below). The amortization of deferred debt issuance costs for the ABL Credit Facility and its predecessor is included in interest expense, and was $0.4 million for fiscal 2022, fiscal 2021 and fiscal 2020.

As of the dates indicated, accrued liabilities and other short-term obligations are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Compensation, payroll related tax and benefits (1)	$	126,338	$	201,119
Warranty	45,503		48,019
Vacation	26,396		31,200
Foreign currency forward contracts	15,604		716
Income taxes payable	11,472		13,577
Interest payable	4,793		598
Finance lease liabilities	3,758		3,620
Other	126,918		110,436
	$	360,782	$	409,285

(1) Reduction is primarily due to a lower accrual rate related to Ciena’s 2022 annual cash incentive compensation plan.

The following table summarizes the activity in Ciena’s accrued warranty for the fiscal years indicated (in thousands):


Year Ended	Beginning Balance		Current Year Provisions		Settlements		Ending Balance
October 31, 2020	$	48,498	$	22,417	$	21,047	$	49,868
October 30, 2021	$	49,868	$	17,093	$	18,942	$	48,019
October 29, 2022	$	48,019	$	17,440	$	19,956	$	45,503

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


	October 29, 2022		October 30, 2021
Products	$	19,814	$	12,859
Services	180,421		162,605
Total deferred revenue	200,235		175,464
Less current portion	(137,899)		(118,007)
Long-term deferred revenue	$	62,336	$	57,457

As of the dates indicated, other long-term obligations are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Finance lease liabilities	$	53,176	$	62,583
Interest rate swap liability	—		15,928
Income tax liability	72,644		63,412



Deferred compensation plan liability	12,535		12,877
Other	11,980		12,003
	$	150,335	$	166,803

DERIVATIVE INSTRUMENTS	12 Months Ended
DERIVATIVE INSTRUMENTS	Oct. 29, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS	DERIVATIVE INSTRUMENTS Foreign Currency Derivatives Ciena conducts business globally in numerous currencies, and thus is exposed to adverse foreign currency exchange rate changes. To limit this exposure, Ciena entered into foreign currency contracts. Ciena does not enter into such contracts for speculative purposes. As of October 29, 2022 and October 30, 2021, Ciena had forward contracts to hedge its foreign exchange exposure in order to reduce variability that is principally related to research and development activities. The notional amount of these contracts was approximately $272.2 million and $288.6 million as of October 29, 2022 and October 30, 2021, respectively. These foreign exchange contracts have maturities of 24 months or less and have been designated as cash flow hedges. As of October 29, 2022 and October 30, 2021, Ciena had forward contracts to hedge its foreign exchange exposure in order to reduce the variability in various currencies of certain balance sheet items. The notional amount of these contracts was approximately $108.0 million and $296.1 million as of October 29, 2022 and October 30, 2021, respectively. These foreign exchange contracts have maturities of 12 months or less and have not been designated as hedges for accounting purposes. Interest Rate Derivatives Ciena is exposed to floating rates of LIBOR interest on its term loan borrowings (see Note 19 below) and has hedged such risk by entering into floating-to-fixed interest rate swap arrangements (“interest rate swaps”). The interest rate swaps fix the LIBOR rate of approximately $350.0 million of the principal amount of the 2025 Term Loan at 2.957% through September 2023. The total notional amount of these interest rate swaps in effect as of October 29, 2022 was $350.0 million. In April 2022, Ciena entered into floating-to-fixed forward starting interest rate swap arrangements (“forward starting swaps”). The forward starting swaps fix the Secured Overnight Funding Rate (“SOFR”) for $350.0 million of the 2025 Term Loan (as defined in Note 19 below) at 2.968% from September 2023 through the 2025 Term Loan maturity. The total notional amount of forward starting swaps effective September 2023 was $350.0 million as of October 29, 2022. Ciena entered into the forward starting swaps to hedge its anticipated SOFR rate risk from the 2025 Term Loan because the LIBOR rate is expected to be discontinued in 2023. Ciena expects the variable rate payments to be received under the terms of the interest rate swaps and forward starting swaps to offset exactly the forecasted variable rate payments on the equivalent notional amount of the 2025 Term Loan. These derivative contracts have been designated as cash flow hedges. Other information regarding Ciena’s derivatives is immaterial for separate financial statement presentation. See Notes 6 and 8 above.

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

12 Months Ended

Oct. 29, 2022

Equity [Abstract]

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

The following table summarizes the changes in accumulated balances of other comprehensive income (“AOCI”), net of tax (in thousands):


	Unrealized Gain/(Loss) on						Cumulative
	Available-for-Sale Securities		Foreign Currency Forward Contracts		Forward Starting Interest Rate Swaps		Foreign Currency Translation Adjustment		Total
Balance at November 2, 2019	$	152	$	925	$	(13,686)	$	(9,475)	$	(22,084)
Other comprehensive loss before reclassifications	(107)		(3,891)		(12,302)		(4,174)		(20,474)
Amounts reclassified from AOCI	—		2,747		4,453		—		7,200
Balance at October 31, 2020	45		(219)		(21,535)		(13,649)		(35,358)
Other comprehensive gain (loss) before reclassifications	(209)		16,856		(261)		20,215		36,601
Amounts reclassified from AOCI	—		(10,421)		9,617		—		(804)
Balance at October 30, 2021	(164)		6,216		(12,179)		6,566		439
Other comprehensive gain (loss) before reclassifications	(2,801)		(16,299)		14,512		(49,446)		(54,034)
Amounts reclassified from AOCI	—		(114)		7,064		—		6,950
Balance at October 29, 2022	$	(2,965)	$	(10,197)	$	9,397	$	(42,880)	$	(46,645)

All amounts reclassified from AOCI related to settlement (gains) losses on foreign currency forward contracts designated as cash flow hedges impacted research and development expense on the Consolidated Statements of Operations. All amounts reclassified from AOCI related to settlement (gains) losses on forward starting interest rate swaps designated as cash flow hedges impacted interest and other income (loss), net on the Consolidated Statements of Operations.

LEASES

12 Months Ended

Oct. 29, 2022

Leases [Abstract]

LEASES

LEASESCiena leases over 1.3 million square feet of facilities globally. Ciena’s corporate headquarters are located in Hanover, Maryland. Ciena’s largest facilities are research and development centers located in Ottawa, Canada and Gurgaon, India. Ciena also has engineering facilities located in San Jose, California; Alpharetta, Georgia; Quebec, Canada; and Pune and Bangalore,

India. In addition, Ciena leases various smaller offices in regions throughout the world to support sales and services operations. Office facilities are leased under various non-cancelable operating or finance leases. Ciena's current leases have remaining terms that vary up to 10 years. Certain leases provide for options to extend up to 10 years and/or options to terminate within four years.

Leases included in the Consolidated Balance Sheets for the fiscal periods indicated were as follows (in thousands):


	Classification	Balance at October 29, 2022		Balance at October 30, 2021
Operating leases:
Operating ROU Assets	Operating right-of-use assets	$	45,108	$	44,285
Operating lease liabilities	Operating lease liabilities and Long-term operating lease liabilities	$	61,317	$	60,196
Finance leases:
Buildings, gross	Equipment, building, furniture and fixtures, net	$	69,247	$	76,123
Less: accumulated depreciation	Equipment, building, furniture and fixtures, net	(26,266)		(24,027)
Buildings, net		$	42,981	$	52,096
Finance lease liabilities	Accrued liabilities and other short-term obligations and other long-term obligations	$	56,934	$	66,203

ROU assets that involve subleased or vacant space aggregate $7.1 million as of October 29, 2022. Finance lease buildings, net, that involve subleased or vacant space aggregate $6.8 million as of October 29, 2022. These assets may become impaired if tenants are unable to service their obligations under the sublease, and/or if the estimates as to occupancy are not realized, either of which may be more likely as COVID-19 impacts evolve.

For the periods indicated, the components of lease expense included in the Consolidated Statements of Operations were as follows (in thousands):


		Year Ended		Year Ended		Year Ended
	Classification	October 29, 2022		October 30, 2021		October 31, 2020
Operating lease costs	Operating expense	$	17,966	$	16,602	$	17,544
Finance lease cost:
Amortization of finance ROU asset	Operating expense	4,592		4,773		4,465
Interest on finance lease liabilities	Interest expense	4,601		4,882		4,777
Total finance lease cost		9,193		9,655		9,242
Non-capitalized lease cost	Operating expense	917		1,152		2,976
Variable lease cost(1)	Operating expense	5,898		5,690		5,185

Net lease cost(2)		$	33,974	$	33,099	$	34,947

(1) Variable lease costs include expenses relating to insurance, taxes, maintenance and other costs required by the applicable operating lease. Variable lease costs are determined by whether they are to be included in base rent and if amounts are based on a consumer price index.

(2) Excludes other operating expense of $12.8 million, $8.8 million, and $11.0 million for the fiscal years ended October 29, 2022, October 30, 2021, and October 31, 2020, respectively, related to amortization of leasehold improvements.

Future minimum lease payments and the present value of minimum lease payments related to operating and finance leases as of October 29, 2022 were as follows (in thousands):


	Operating Leases		Finance Leases		Total
2023	$	20,401	$	7,791	$	28,192
2024	16,795		7,791		24,586
2025	12,387		7,947		20,334
2026	8,879		7,979		16,858
2027	4,435		8,255		12,690
Thereafter	2,245		40,588		42,833
Total lease payments	65,142		80,351		145,493
Less: Imputed interest	(3,825)		(23,417)		(27,242)
Present value of lease liabilities	61,317		56,934		118,251
Less: Current portion of present value of minimum lease payments	18,925		3,758		22,683
Long-term portion of present value of minimum lease payments	$	42,392	$	53,176	$	95,568

The weighted average remaining lease terms and weighted average discount rates for operating and finance leases were as follows (in thousands):


Weighted-average remaining lease term in years:	As of October 29, 2022		As of October 30, 2021
Operating leases	3.85		4.06
Finance leases	9.71		10.71
Weighted-average discount rates:
Operating leases	2.97	%	2.49	%
Finance leases	7.56	%	7.56	%

LEASES

Leases included in the Consolidated Balance Sheets for the fiscal periods indicated were as follows (in thousands):


	Classification	Balance at October 29, 2022		Balance at October 30, 2021
Operating leases:
Operating ROU Assets	Operating right-of-use assets	$	45,108	$	44,285
Operating lease liabilities	Operating lease liabilities and Long-term operating lease liabilities	$	61,317	$	60,196
Finance leases:
Buildings, gross	Equipment, building, furniture and fixtures, net	$	69,247	$	76,123
Less: accumulated depreciation	Equipment, building, furniture and fixtures, net	(26,266)		(24,027)
Buildings, net		$	42,981	$	52,096
Finance lease liabilities	Accrued liabilities and other short-term obligations and other long-term obligations	$	56,934	$	66,203

For the periods indicated, the components of lease expense included in the Consolidated Statements of Operations were as follows (in thousands):


		Year Ended		Year Ended		Year Ended
	Classification	October 29, 2022		October 30, 2021		October 31, 2020
Operating lease costs	Operating expense	$	17,966	$	16,602	$	17,544
Finance lease cost:
Amortization of finance ROU asset	Operating expense	4,592		4,773		4,465
Interest on finance lease liabilities	Interest expense	4,601		4,882		4,777
Total finance lease cost		9,193		9,655		9,242
Non-capitalized lease cost	Operating expense	917		1,152		2,976
Variable lease cost(1)	Operating expense	5,898		5,690		5,185

Net lease cost(2)		$	33,974	$	33,099	$	34,947

Future minimum lease payments and the present value of minimum lease payments related to operating and finance leases as of October 29, 2022 were as follows (in thousands):


	Operating Leases		Finance Leases		Total
2023	$	20,401	$	7,791	$	28,192
2024	16,795		7,791		24,586
2025	12,387		7,947		20,334
2026	8,879		7,979		16,858
2027	4,435		8,255		12,690
Thereafter	2,245		40,588		42,833
Total lease payments	65,142		80,351		145,493
Less: Imputed interest	(3,825)		(23,417)		(27,242)
Present value of lease liabilities	61,317		56,934		118,251
Less: Current portion of present value of minimum lease payments	18,925		3,758		22,683
Long-term portion of present value of minimum lease payments	$	42,392	$	53,176	$	95,568

The weighted average remaining lease terms and weighted average discount rates for operating and finance leases were as follows (in thousands):


Weighted-average remaining lease term in years:	As of October 29, 2022		As of October 30, 2021
Operating leases	3.85		4.06
Finance leases	9.71		10.71
Weighted-average discount rates:
Operating leases	2.97	%	2.49	%
Finance leases	7.56	%	7.56	%

SHORT-TERM AND LONG-TERM DEBT

12 Months Ended

Oct. 29, 2022

Debt Disclosure [Abstract]

SHORT-TERM AND LONG-TERM DEBT

2025 Term Loan

On January 23, 2020, Ciena entered into a Refinancing Amendment to Credit Agreement pursuant to which Ciena refinanced the entire outstanding amount of its then existing senior secured term loan and incurred a new senior secured term loan in an aggregate principal amount of $693.0 million and maturing on September 28, 2025 (the “2025 Term Loan”). The 2025 Term Loan bears interest at LIBOR for the chosen borrowing period plus a spread of 1.75% subject to a minimum LIBOR rate of 0.00%. At the end of fiscal 2022, the interest rate on the 2025 Term Loan was 5.24%. Interest on the 2025 Term Loan is payable periodically based on the interest period selected for borrowing.

The net carrying value of the 2025 Term Loan was comprised of the following for the fiscal periods indicated (in thousands):


	October 29, 2022								October 30, 2021
	Principal Balance		Unamortized Discount		Deferred Debt Issuance Costs		Net Carrying Value		Net Carrying Value
2025 Term Loan	$	675,675	$	(928)	$	(1,737)	$	673,010	$	677,285

Deferred debt issuance costs that were deducted from the carrying amounts of the 2025 Term Loan totaled $1.7 million at October 29, 2022 and $2.3 million at October 30, 2021. Deferred debt issuance costs are amortized using the straight-line method, which approximates the effect of the effective interest rate method, through the maturity of the 2025 Term Loan. The amortization of deferred debt issuance costs for the 2025 Term Loan is included in interest expense, and was $0.6 million for fiscal 2022 and fiscal 2021. The carrying value of the 2025 Term Loan listed above is also net of any unamortized debt discounts.

As of October 29, 2022, the estimated fair value of the 2025 Term Loan was $668.9 million. Ciena’s term loan is categorized as Level 2 in the fair value hierarchy. Ciena estimated the fair value of the 2025 Term Loan using a market approach based on observable inputs, such as current market transactions involving comparable securities.

2030 Notes

On January 18, 2022, Ciena entered into an Indenture (the “Indenture”) among Ciena, as issuer, certain domestic subsidiaries of Ciena, as guarantors (collectively, the “Guarantors”), and U.S. Bank National Association, as trustee (the “Trustee”), pursuant to which Ciena issued $400.0 million in aggregate principal amount of 4.00% senior notes due 2030 (the “2030 Notes”).

Ciena’s obligations under the 2030 Notes and the Indenture are irrevocably and unconditionally guaranteed, jointly and severally, on an unsecured senior basis by each of its domestic subsidiaries that is a borrower under or guarantor with respect to the 2025 Term Loan and ABL Credit Facility.

The net proceeds from the sale of the 2030 Notes, after deducting costs, were approximately $394.5 million.

The 2030 Notes bear interest at a rate of 4.00% per annum and mature on January 31, 2030. Interest is payable on the 2030 Notes in arrears on January 31 and July 31 of each year, commencing on July 31, 2022.

The 2030 Notes and related subsidiary guarantees are the general unsubordinated unsecured senior obligations of Ciena and the Guarantors, respectively, and (i) rank equally in right of payment with all other existing and future senior indebtedness of Ciena and the Guarantors; (ii) are effectively subordinated to all existing and future secured indebtedness of Ciena and the Guarantors, including indebtedness under the 2025 Term Loan and the ABL Credit Facility, to the extent of the value of the assets securing such indebtedness; (iii) are structurally subordinated to all existing and future obligations, including indebtedness, of Ciena’s subsidiaries that do not guarantee the 2030 Notes; and (iv) are senior in right of payment to all of Ciena’s existing and future unsecured indebtedness that is, by its terms, expressly subordinated in right of payment to the 2030 Notes.

The Indenture contains restrictive covenants that limit the ability of Ciena and the Restricted Subsidiaries (as defined in the Indenture) or the Guarantors, as applicable, to, among other things, create certain liens or consolidate or merge with or into, or sell, lease, transfer, convey or otherwise dispose of all or substantially all the assets of Ciena or Ciena and its subsidiaries taken as a whole. These covenants are subject to a number of important exceptions and qualifications as set forth in the Indenture.

The Indenture provides for events of default (subject in certain cases to customary grace and cure periods) that include, among others, nonpayment of principal or interest when due, breach of covenants or other agreements in the Indenture, defaults in payment of certain other indebtedness and certain events of bankruptcy or insolvency. Generally, if an event of default occurs, the Trustee or the holders of at least 25% in principal amount of the outstanding 2030 Notes may declare the principal amount of and accrued but unpaid interest on all of the 2030 Notes to be due and payable immediately, provided that such amounts become due and payable without any further action or notice in the case of an event of bankruptcy or insolvency that constitutes an event of default.

Prior to January 31, 2025, Ciena may redeem the 2030 Notes, in whole or part, at a price equal to 100% of the principal amount thereof, plus a “make-whole” of 102% of the principal amount of the notes to be redeemed, and any accrued and unpaid interest. On or after January 31, 2025, Ciena may redeem the 2030 Notes, in whole or part, at the redemption prices set forth in the Indenture and form of the 2030 Notes, plus any accrued and unpaid interest. In addition, until January 31, 2025, Ciena may redeem up to 40% of the aggregate principal amount of the 2030 Notes with the net cash proceeds of certain equity offerings, as described in the Indenture, at a redemption price equal to 104% of the principal amount of the 2030 Notes to be redeemed, plus any accrued and unpaid interest. If a change of control triggering event occurs, as described in the Indenture, Ciena must offer to repurchase all of the 2030 Notes (unless otherwise redeemed) at a price equal to 101% of the principal amount thereof, plus any accrued and unpaid interest.

The net carrying value of the 2030 Notes was comprised of the following for the period indicated (in thousands):


	October 29, 2022
	Principal Balance		Deferred Debt Issuance Costs		Net Carrying Value
2030 Senior Notes 4.00% fixed-rate	$	400,000	$	(4,955)	$	395,045

Deferred debt issuance costs that were deducted from the carrying amount of the 2030 Notes totaled $5.0 million as of October 29, 2022. Deferred debt issuance costs are amortized using the straight-line method, which approximates the effect of the effective interest rate, through the maturity of the 2030 Notes. The amortization of deferred debt issuance costs for the 2030 Notes is included in interest expense, and was $0.5 million during fiscal 2022.

As of October 29, 2022, the estimated fair value of the 2030 Notes was $337.0 million. The 2030 Notes are categorized as Level 2 in the fair value hierarchy. Ciena estimated the fair value of its 2030 Notes using a market approach based on observable inputs, such as current market transactions involving comparable securities.ABL CREDIT FACILITY

Ciena Corporation and certain of its subsidiaries are parties to the ABL Credit Facility, which provides for a total commitment of $300 million with a maturity date of October 28, 2024. The ABL Credit Facility contains customary covenants that limit, absent lender approval, the ability of Ciena and certain of its subsidiaries to, among other things, pay cash dividends, incur debt, create liens and encumbrances, and redeem or repurchase stock. In addition, Ciena is required to maintain a minimum consolidated fixed charge coverage ratio of not less than 1.0 to 1.0 when excess availability under the ABL Credit Facility is less than the greater of (i) 10.0% of the lesser of the total borrowing base and the aggregate revolving commitments and (ii) $15,000,000. Ciena principally uses the ABL Credit Facility to support the issuance of letters of credit that arise in the ordinary course of its business and thereby to reduce its use of cash required to collateralize these instruments.

As of October 29, 2022, letters of credit totaling $85.6 million were outstanding under the ABL Credit Facility. There were no borrowings outstanding under the ABL Credit Facility as of October 29, 2022.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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+ Details

ABL CREDIT FACILITY

12 Months Ended

Oct. 29, 2022

Line of Credit Facility [Abstract]

ABL CREDIT FACILITY

SHORT-TERM AND LONG-TERM DEBT

2025 Term Loan

The net carrying value of the 2025 Term Loan was comprised of the following for the fiscal periods indicated (in thousands):


	October 29, 2022								October 30, 2021
	Principal Balance		Unamortized Discount		Deferred Debt Issuance Costs		Net Carrying Value		Net Carrying Value
2025 Term Loan	$	675,675	$	(928)	$	(1,737)	$	673,010	$	677,285

2030 Notes

The net proceeds from the sale of the 2030 Notes, after deducting costs, were approximately $394.5 million.

The net carrying value of the 2030 Notes was comprised of the following for the period indicated (in thousands):


	October 29, 2022
	Principal Balance		Deferred Debt Issuance Costs		Net Carrying Value
2030 Senior Notes 4.00% fixed-rate	$	400,000	$	(4,955)	$	395,045

- Definition

+ References

+ Details

EARNINGS PER SHARE CALCULATION

12 Months Ended

Oct. 29, 2022

Earnings Per Share [Abstract]

EARNINGS PER SHARE CALCULATION

Basic net income per common share (“Basic EPS”) is computed using the weighted average number of common shares outstanding. Diluted net income per potential common share (“Diluted EPS”) is computed using the weighted average number of the following, in each case, to the extent the effect is not anti-dilutive: (i) common shares outstanding, (ii) shares issuable upon vesting of stock unit awards; and (iii) shares issuable under Ciena’s employee stock purchase plan and upon exercise of outstanding stock options, using the treasury stock method.

The following table presents the calculation of Basic and Diluted EPS (in thousands except per share amounts):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Net income	$	152,902	$	500,196	$	361,291
Basic weighted average shares outstanding	151,208		155,279		154,287
Effect of dilutive potential common shares	985		1,464		1,668
Diluted weighted average shares	152,193		156,743		155,955
Basic EPS	$	1.01	$	3.22	$	2.34
Diluted EPS	$	1.00	$	3.19	$	2.32
Antidilutive employee share-based awards, excluded	1,370		110		263

STOCKHOLDERS’ EQUITY	12 Months Ended
STOCKHOLDERS’ EQUITY	Oct. 29, 2022
Equity [Abstract]
STOCKHOLDERS' EQUITY	STOCKHOLDERS’ EQUITY Stock Repurchase Program and Accelerated Share Repurchase Agreement On December 13, 2018, Ciena announced that its Board of Directors authorized a program to repurchase up to $500 million of Ciena’s common stock. During fiscal 2020, Ciena repurchased 1.9 million shares of its common stock, for an aggregate purchase price of $74.5 million at an average price of $39.81 per share. During fiscal 2021, Ciena repurchased an additional 1.7 million shares of its common stock, for an aggregate purchase price of $92.1 million at an average price of $54.27 per share. Under this program, Ciena repurchased a total of 7.4 million shares of its common stock, for an aggregate purchase price of $316.7 million at an average price of $42.75 per share. On December 9, 2021, Ciena announced that its Board of Directors replaced its previously authorized program with a program to repurchase up to $1.0 billion of its common stock. On December 13, 2021, Ciena entered into an accelerated share repurchase agreement (the “ASR Agreement”) with Goldman, Sachs & Co. LLC (“Goldman”) to repurchase $250.0 million (the “Repurchase Price”) of its common stock as part of the repurchase program. Under the terms of the ASR Agreement, Ciena paid the Repurchase Price to Goldman, and received approximately 3.6 million shares of its common stock from Goldman, calculated based on the average of the volume-weighted average prices of Ciena’s common stock of $69.78 for the period from December 14, 2021 to February 11, 2022, less a discount, which completed the repurchases contemplated by the ASR Agreement. Shares repurchased pursuant to the ASR Agreement were immediately retired upon receipt. During fiscal 2022, Ciena repurchased an additional 4.8 million shares of its common stock, for an aggregate purchase price of $250.0 million at an average price of $51.53 per share. As of October 29, 2022, Ciena has repurchased an aggregate of 8.4 million shares for an aggregate purchase price of $500.0 million at an average price of $59.28 per share and has an aggregate of $500.0 million of authorized funds remaining under its stock repurchase program. The purchase price for the shares of Ciena’s stock repurchased is reflected as a reduction of common stock and additional paid-in capital. Stock Repurchases Related to Restricted Stock Unit Tax Withholdings Ciena repurchases shares of common stock to satisfy employee tax withholding obligations due upon vesting of stock unit awards. The related purchase price of $48.5 million for the shares of Ciena’s stock repurchased during fiscal 2022 is reflected as a reduction to stockholders’ equity. Ciena is required to allocate the purchase price of the repurchased shares as a reduction of common stock and additional paid-in capital.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

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+ Details

INCOME TAXES

12 Months Ended

Oct. 29, 2022

Income Tax Disclosure [Abstract]

INCOME TAXES

For the periods indicated, the provision (benefit) for income taxes consists of the following (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Provision (benefit) for income taxes:
Current:
Federal	$	27,479	$	72,603	$	4,363
State	10,289		21,400		13,328
Foreign	19,337		25,021		12,640
Total current	57,105		119,024		30,331
Deferred:
Federal	(30,032)		(21,942)		60,679
State	520		(11,546)		4,607
Foreign	2,010		(122,981)		(947)
Total deferred	(27,502)		(156,469)		64,339
Provision (benefit) for income taxes	$	29,603	$	(37,445)	$	94,670

For the periods indicated, income before provision (benefit) for income taxes consists of the following (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
United States	$	28,784	$	298,514	$	387,697
Foreign	153,721		164,237		68,264
Total	$	182,505	$	462,751	$	455,961

Ciena’s foreign income tax as a percentage of foreign income may appear disproportionate compared to the expected tax based on the U.S. federal statutory rate and is dependent on the mix of earnings and tax rates in foreign jurisdictions.

For the periods indicated, the tax provision reconciles to the amount computed by multiplying income before income taxes by the U.S. federal statutory rate of 21% for fiscal 2022, fiscal 2021 and fiscal 2020 as follows:


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Provision at statutory rate	21.00	%	21.00	%	21.00	%
Intercompany IP Restructuring Transaction	—	%	(25.85)	%	—	%
Base Erosion and Anti-Abuse Tax	—	%	—	%	(1.02)	%
State taxes	2.31	%	3.73	%	2.21	%
Foreign taxes	(1.37)	%	2.76	%	0.51	%
Research and development credit	(23.66)	%	(7.99)	%	(7.74)	%
Non-deductible compensation	5.26	%	1.68	%	1.79	%
Foreign derived intangible income	—	%	(1.82)	%	(2.07)	%
Global intangible low taxed income	1.73	%	—	%	—	%
Foreign Nontaxable interest	(1.90)	%	—	%	—	%
Taxation on foreign inflation	1.41	%	0.16	%	(0.01)	%
Transition tax	—	%	—	%	0.02	%
Rate change	1.27	%	(4.33)	%	3.04	%
Valuation allowance	8.35	%	1.77	%	3.58	%
Other	1.82	%	0.80	%	(0.55)	%
Effective income tax rate	16.22	%	(8.09)	%	20.76	%

Our future income tax provisions and deferred tax balances may be affected by the amount of pre-tax income, the jurisdictions where it is earned, the existence and utilizability of tax attributes and changes in tax laws and business reorganizations. Ciena continues to monitor these items.

In fiscal 2021, Ciena began implementation of a plan to reorganize its global supply chain and distribution structure more substantially, which included a legal entity reorganization and related system upgrade. Ciena completed the first phase of this plan in fiscal 2021, and substantially completed the reorganization during fiscal 2022. As part of this reorganization, Ciena completed an internal transfer of certain of its non-U.S. intangible assets, which created amortizable tax basis resulting in the discrete recognition of a $119.3 million deferred tax asset with a corresponding tax benefit. The impact of this transfer is reflected in Ciena’s effective tax rate for the year ended October 30, 2021, which had a significant, one-time impact on its net income for the period.

Ciena is also required to make accounting policy elections as a result of the Tax Act. These include whether a valuation allowance is recorded for the estimated effect of the application of GILTI and BEAT or if these will be treated as period costs when incurred. Ciena had made the incremental cash tax cost policy election with respect to analyzing the impact of GILTI on the assessment of the realizability of net operating losses. The realizability of U.S. tax carryforwards is not impacted by the BEAT, and the BEAT is a period cost when incurred. Ciena is also required to elect to treat taxes due on future GILTI inclusions in U.S. taxable income either as a current period expense when incurred or reflect such portion of the future GILTI inclusions in U.S. taxable income that relate to existing basis differences in Ciena’s current measurement of deferred taxes. Ciena’s accounting policy election is to treat the taxes due on future U.S. inclusions in taxable income under GILTI as a period cost when incurred.

The significant components of deferred tax assets are as follows (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021
Deferred tax assets:
Reserves and accrued liabilities	$	76,839	$	69,950
Depreciation and amortization	690,636		677,729
NOL and credit carry forward	154,707		165,087
Other	63,902		47,048
Gross deferred tax assets	986,084		959,814
Valuation allowance	(162,076)		(159,634)
Deferred tax asset, net of valuation allowance	$	824,008	$	800,180

A reconciliation of the beginning and ending amount of unrecognized tax benefits, excluding interest and penalties, is as follows (in thousands):


	Amount
Unrecognized tax benefits at November 2, 2019	$	94,604
Increase related to positions taken in prior period	653
Increase related to positions taken in current period	1,151
Reductions related to expiration of statute of limitations	(660)
Unrecognized tax benefits at October 31, 2020	95,748
Decrease related to positions taken in prior period	(22,854)
Reductions related to settlements with taxing authorities	(654)
Increase related to positions taken in current period	5,510
Reductions related to expiration of statute of limitations	(659)
Unrecognized tax benefits at October 30, 2021	77,091
Increase related to positions taken in prior period	4,732
Reductions related to settlements with taxing authorities	(3,229)
Increase related to positions taken in current period	2,959
Reductions related to expiration of statute of limitations	(1,039)
Unrecognized tax benefits at October 29, 2022	$	80,514

As of October 29, 2022 and October 30, 2021, Ciena had accrued $5.2 million and $3.8 million of interest and penalties, respectively, related to unrecognized tax benefits included in other long-term obligations in the Consolidated Balance Sheets. Interest and penalties of $1.7 million and $0.9 million were recorded as a net expense to the provision for income taxes during fiscal 2022 and 2020, respectively. During fiscal 2021, Ciena recorded a net benefit to the provision for interest and penalties in its provision for income taxes of $0.1 million. If recognized, the entire balance of unrecognized tax benefits would impact the effective tax rate. Over the next 12 months, Ciena does not estimate any material changes in unrecognized income tax benefits.

Ciena has not provided for U.S. deferred income taxes on the cumulative unremitted earnings of its non-U.S. affiliates, as it plans to indefinitely reinvest these foreign earnings outside the U.S. As of October 29, 2022, the cumulative amount of such temporary differences for which a deferred tax liability has not been recognized is an estimated $477.0 million. If these earnings were distributed to the U.S., Ciena would be subject to additional foreign withholding taxes of approximately $33.0 million. Additionally, there are no other significant temporary differences for which a deferred tax liability has not been recognized.

As of October 29, 2022, Ciena continues to maintain a valuation allowance of $162.1 million against its gross deferred tax assets primarily. The valuation allowance is primarily related to state and foreign net operating losses and credits that Ciena estimates it will not be able to use.

The following table summarizes the activity in Ciena’s valuation allowance against its gross deferred tax assets (in thousands):


Year Ended	Beginning Balance		Additions		Deductions		Ending Balance
October 31, 2020	$	135,978	$	25,749	$	10,300	$	151,427
October 30, 2021	$	151,427	$	17,897	$	9,690	$	159,634
October 29, 2022	$	159,634	$	15,245	$	12,803	$	162,076

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 21
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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-URI https://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

SHARE-BASED COMPENSATION EXPENSE

12 Months Ended

Oct. 29, 2022

Share-Based Payment Arrangement [Abstract]

SHARE-BASED COMPENSATION EXPENSE

Ciena has outstanding equity awards issued under its 2017 Omnibus Incentive Plan (the “2017 Plan”), its 2008 Omnibus Incentive Plan, and certain legacy equity plans and equity plans assumed as a result of previous acquisitions. All equity awards granted on or after March 23, 2017 are made exclusively from the 2017 Plan. Ciena also makes shares of its common stock available for purchase under the ESPP. Each of the 2017 Plan and the ESPP are described below.

2017 Plan

The 2017 Plan has a ten-year term and authorizes the issuance of awards including stock options, restricted stock units (RSUs), restricted stock, unrestricted stock, stock appreciation rights (SARs) and other equity and/or cash performance incentive awards to employees, directors and consultants of Ciena. Subject to certain restrictions, the Compensation Committee of the Board of Directors has broad discretion to establish the terms and conditions for awards under the 2017 Plan, including the number of shares, vesting conditions, and the required service or performance criteria. Options and SARs have a maximum term of ten years, and their exercise price may not be less than 100% of fair market value on the date of grant. Repricing of stock options and SARs is prohibited without stockholder approval. Certain change in control transactions may cause awards granted under the 2017 Plan to vest, unless the awards are continued or substituted for in connection with the transaction.

The 2017 Plan authorizes and reserves 21.1 million shares for issuance. The number of shares available under the 2017 Plan are also increased from time to time by: (i) the number of shares subject to outstanding awards granted under Ciena’s prior equity compensation plans that are forfeited, expire or are canceled without delivery of common stock following the effective date of the 2017 Plan, and (ii) the number of shares subject to awards assumed or substituted in connection with the acquisition of another company. As of October 29, 2022, the total number of shares authorized for issuance under the 2017 Plan was 21.1 million and approximately 9.4 million shares remained available for issuance thereunder.

Stock Options

There were no stock options granted by Ciena during fiscal 2022, fiscal 2021 or fiscal 2020. Outstanding stock option awards granted to employees in prior periods are generally subject to service-based vesting conditions and vest over a four-year period. The following table is a summary of Ciena’s stock option activity for the periods indicated (shares in thousands):


	Shares Underlying Options Outstanding	Weighted Average Exercise Price




Balance at October 30, 2021	83	$	32.46
Granted	—	—

Exercised	(46)	$	31.44
Canceled	(5)	$	51.64
Balance at October 29, 2022	32	$	30.98

The total intrinsic value of options exercised during fiscal 2022, fiscal 2021 and fiscal 2020 was $1.6 million, $0.5 million and $1.3 million, respectively.

The following table summarizes information with respect to stock options outstanding at October 29, 2022, based on Ciena’s closing stock price on the last trading day of Ciena’s fiscal 2022 (shares and intrinsic value in thousands):


					Options Outstanding and Vested at
					October 29, 2022
					Number	Weighted Average Remaining	Weighted
Range of					of	Contractual	Average		Aggregate
Exercise					Underlying	Life	Exercise		Intrinsic
Price					Shares	(Years)	Price		Value
$	14.38	—	$	18.22	13	1.56	$	16.02	$	401
$	32.06	—	$	46.30	19	0.43	$	40.67	145
$	14.38	—	$	46.30	32	0.87	$	30.98	$	546

Assumptions for Option-Based Awards

Ciena recognizes the fair value of stock options as share-based compensation expense on a straight-line basis over the requisite service period. Ciena did not grant any option-based awards during fiscal 2022, fiscal 2021 or fiscal 2020.

Restricted Stock Units

A restricted stock unit is a stock award that entitles the holder to receive shares of Ciena common stock as the unit vests. Ciena’s outstanding restricted stock unit awards are subject to service-based vesting conditions and/or performance-based vesting conditions. Awards subject to service-based conditions typically vest in increments over a three or four-year period. However, the 2017 Plan permits Ciena to grant service-based stock awards with a minimum one-year vesting period. Awards with performance-based vesting conditions (i) require the achievement of certain operational, financial or other performance criteria or targets or (ii) vest based on Ciena’s total stockholder return as compared to an index of peer companies, in whole or in part.

Assumptions for Restricted Stock Unit Awards

Ciena recognizes the estimated fair value of restricted stock units subject only to service-based vesting conditions by multiplying the number of shares underlying the award by the closing price per share of Ciena common stock on the grant date. Share-based expense for service-based restricted stock unit awards is recognized ratably over the vesting period on a straight-line basis.

Ciena recognizes the estimated fair value of restricted stock units subject to performance-based vesting conditions other than total stockholder return, by assuming the satisfaction of any performance-based objectives at the “target” level and multiplying the corresponding number of shares earned based upon such achievement by the closing price per share of Ciena common stock on the grant date. Share-based compensation expense is recognized over the performance period, using graded vesting, which considers each performance period or tranche separately, based on Ciena’s determination of whether it is probable that the performance targets will be achieved. At the end of each reporting period, Ciena reassesses the probability of achieving the performance targets and the performance period required to meet those targets. The estimation of whether the performance targets will be achieved involves judgment. Revisions are reflected in the period in which the estimate is changed. If any performance goals are not met, no compensation cost is ultimately recognized against that goal and, to the extent previously recognized, compensation expense is reversed.

Share-based compensation expense for restricted stock units subject only to service-based vesting conditions and restricted stock units subject to performance-based vesting conditions other than total stockholder return, is recognized only for those awards that ultimately vest. In the event of a forfeiture of an award, the expense related to the unvested portion of that award is reversed. Reversal of share-based compensation expense based on forfeitures can materially affect the measurement of estimated fair value of Ciena’s share-based compensation.

Ciena recognizes the estimated fair value of performance based awards subject to total stockholder return as compared to an index of peer companies using a Monte Carlo simulation valuation model. Ciena reverses share-based compensation expense on performance based awards subject to total shareholder return only when the requisite service period is not reached. Assumptions for awards granted during fiscal 2022, fiscal 2021 and fiscal 2020 included the following:


	Year Ended
	October 29, 2022	October 30, 2021	October 31, 2020
Expected volatility of Ciena common stock, which is a weighted average of implied volatility and historical volatility	38.27%	41.00%	31.77%
Historical volatility of Ciena common stock	42.17%	42.80%	36.29%
Historical volatility of S&P Networking Index	27.22%	27.30%	18.40%
Correlation coefficient	0.7049	0.6800	0.5891
Expected life in years	2.89	2.87	2.87
Risk-free interest rate	0.94%	0.17%	1.65%
Expected dividend yield	0.0%	0.0%	0.0%

The following table is a summary of Ciena’s restricted stock unit activity for the period indicated, with the aggregate fair value of the balance outstanding at the end of each period, based on Ciena’s closing stock price on the last trading day of the relevant period (shares and aggregate fair value in thousands):


	Restricted Stock Units Outstanding	Weighted Average Grant Date Fair Value Per Share		Aggregate Fair Value
Balance at October 30, 2021	4,084	$	43.67	$	221,733
Granted	2,361

Vested	(2,030)
Canceled or forfeited	(312)
Balance at October 29, 2022	4,103	$	55.16	$	197,960

As of October 29, 2022 and October 30, 2021, 0.3 million of the total restricted stock units outstanding are performance based awards subject to total stockholder return. The total fair value of restricted stock units that vested and were converted into common stock during fiscal 2022, fiscal 2021 and fiscal 2020 was $119.0 million, $110.0 million and $83.5 million, respectively. The weighted average fair value of each restricted stock unit granted by Ciena during fiscal 2022, fiscal 2021 and fiscal 2020 was $67.03, $48.70 and $41.61, respectively.

Amended and Restated ESPP

Ciena makes shares of its common stock available for purchase under the ESPP under which, eligible employees may enroll in a twelve-month offer period that begins in December and June of each year. Each offer period includes two six-month purchase periods. Employees may purchase a limited number of shares of Ciena common stock at 85% of the fair market value on either the day immediately preceding the offer date or the purchase date, whichever is lower. The ESPP is considered compensatory for purposes of share-based compensation expense. Unless earlier terminated, the ESPP will terminate on April 1, 2031.

During fiscal 2022, fiscal 2021 and fiscal 2020, Ciena issued 0.7 million shares under the ESPP, for each year. At October 29, 2022, 12.2 million shares remained available for issuance under the ESPP.

Share-Based Compensation Expense

The following table summarizes share-based compensation expense for the periods indicated (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Products	$	3,867	$	3,408	$	3,182
Services	7,533		5,181		3,853
Share-based compensation expense included in cost of goods sold	11,400		8,589		7,035
Research and development	31,879		21,863		16,987
Sales and marketing	31,280		25,152		20,194
General and administrative	30,435		28,804		23,424

Share-based compensation expense included in operating expense	93,594		75,819		60,605
Share-based compensation expense capitalized in inventory, net	137		(72)		118
Total share-based compensation	$	105,131	$	84,336	$	67,758

As of October 29, 2022, total unrecognized share-based compensation expense was $185.7 million which relates to unvested restricted stock units and is expected to be recognized over a weighted-average period of 1.51 years.

SEGMENT AND ENTITY WIDE DISCLOSURES

12 Months Ended

Oct. 29, 2022

Segment Reporting [Abstract]

SEGMENT AND ENTITY WIDE DISCLOSURES

Segment Reporting

Ciena has the following operating segments for reporting purposes: (i) Networking Platforms; (ii) Platform Software and Services; (iii) Blue Planet Automation Software and Services; and (iv) Global Services.

Ciena’s long-lived assets, including equipment, building, furniture and fixtures, operating ROU assets, finite-lived intangible assets, and maintenance spares, are not reviewed by Ciena’s chief operating decision maker for purposes of evaluating performance and allocating resources. As of October 29, 2022, equipment, building, furniture and fixtures, net, totaled $267.8 million, and operating ROU assets totaled $45.1 million both of which support asset groups within Ciena’s four operating segments and unallocated selling and general and administrative activities. As of October 29, 2022, finite-lived intangible assets, goodwill and maintenance spares are assigned to asset groups within the following segments (in thousands):


	October 29, 2022
	Networking Platforms		Platform Software and Services		Blue Planet Automation Software and Services		Global Services		Total
Other intangible assets, net	$	38,163	$	—	$	31,354	$	—	$	69,517
Goodwill	$	83,082	$	156,191	$	89,049	$	—	$	328,322
Maintenance spares, net	$	—	$	—	$	—	$	44,815	$	44,815

Segment Profit (Loss)

Segment profit (loss) is determined based on internal performance measures used by Ciena’s chief executive officer to assess the performance of each operating segment in a given period. In connection with that assessment, the chief executive officer excludes the following items: selling and marketing costs; general and administrative costs; significant asset impairments and restructuring costs; amortization of intangible assets; acquisition and integration costs; interest and other income (loss), net; interest expense; loss on extinguishment and modification of debt and provision (benefit) for income taxes.

The table below sets forth Ciena’s segment profit (loss) and the reconciliation to consolidated net income for the respective periods indicated (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Segment profit (loss):
Networking Platforms	$	572,305	$	850,901	$	827,105
Platform Software and Services	175,108		136,602		105,609
Blue Planet Automation Software and Services	(22,388)		(711)		(12,446)
Global Services	210,663		198,521		202,735
Total segment profit	935,688		1,185,313		1,123,003
Less: non-performance operating expenses
Selling and marketing	466,565		452,214		416,425
General and administrative	179,382		181,874		169,548
Significant asset impairments and restructuring costs	33,824		29,565		22,652
Amortization of intangible assets	32,511		23,732		23,383
Acquisition and integration costs	598		2,572		4,031


Add: other non-performance financial items
Interest and other income (loss), net	6,747		(1,768)		964
Interest expense	(47,050)		(30,837)		(31,321)
Loss on extinguishment and modification of debt	—		—		(646)
Less: Provision (benefit) for income taxes	29,603		(37,445)		94,670
Consolidated net income	$	152,902	$	500,196	$	361,291

Entity Wide Reporting

The following table reflects Ciena’s geographic distribution of equipment, building, furniture and fixtures, net, and operating ROU assets, with any country accounting for at least 10% of total equipment, building, furniture and fixtures, net, and operating ROU assets specifically identified. Equipment, building, furniture and fixtures, net, and operating ROU assets attributable to geographic regions outside of the United States and Canada are reflected as “Other International.” For the periods below, Ciena’s geographic distribution of equipment, building, furniture and fixtures, net, and operating ROU assets was as follows (in thousands):


	October 29, 2022		October 30, 2021
Canada	$	226,451	$	240,968
United States	47,515		50,744
Other International	38,921		37,541
Total	$	312,887	$	329,253

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 15
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8657-108599

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-URI https://asc.fasb.org/topic&trid=2134510

+ Details

OTHER EMPLOYEE BENEFIT PLANS	12 Months Ended
OTHER EMPLOYEE BENEFIT PLANS	Oct. 29, 2022
Retirement Benefits [Abstract]
OTHER EMPLOYEE BENEFIT PLANS	OTHER EMPLOYEE BENEFIT PLANS Ciena has a Defined Contribution Pension Plan that covers a majority of its Canada-based employees. The plan covers all Canada-based employees who are not part of an excluded group. Total contributions (employee and employer) cannot exceed the lesser of 18% of participant earnings and an annual dollar limit of CAD$29,210 (approximately $21,305 for 2022). This plan includes a required employer contribution of 1% for all participants and an employer matching contribution equal to 50% of the first 6% an employee contributes each pay period. During fiscal 2022, 2021 and 2020, Ciena made matching contributions of approximately CAD$10.1 million (approximately $7.4 million), CAD$8.3 million (approximately $6.7 million) and CAD$7.0 million (approximately $5.7 million), respectively. Ciena has a 401(k) defined contribution profit sharing plan that covers a majority of its United States-based employees. Participants may contribute up to 60% of base pay through pre-tax or Roth contributions, subject to certain limitations. The plan includes an employer matching contribution equal to 50% of the first 8% an employee contributes each pay period. Ciena may also make discretionary annual profit contributions up to the IRS regulated limit. Ciena has made no profit sharing contributions to date. During fiscal 2022, 2021 and 2020, Ciena made matching contributions of approximately $9.2 million, $8.4 million and $7.5 million, respectively.

COMMITMENTS AND CONTINGENCIES	12 Months Ended
COMMITMENTS AND CONTINGENCIES	Oct. 29, 2022
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Tax Contingencies Ciena is subject to various tax liabilities arising in the ordinary course of business. Ciena does not expect that the ultimate settlement of these tax liabilities will have a material effect on its results of operations, financial position or cash flows. Litigation Ciena is subject to various legal proceedings, claims and other matters arising in the ordinary course of business, including those that relate to employment, commercial, tax and other regulatory matters. Ciena is also subject to intellectual property related claims, including claims against third parties that may involve contractual indemnification obligations on the part of Ciena. Ciena does not expect that the ultimate costs to resolve such matters will have a material effect on its results of operations, financial position or cash flows. Purchase Order Obligations Ciena has certain advanced orders for supply of certain long lead time components. As of October 29, 2022, Ciena had $2.6 billion in outstanding purchase order commitments to contract manufacturers and component suppliers for inventory. In certain instances, Ciena is permitted to cancel, reschedule or adjust these orders. Consequently, only a portion of this amount relates to firm, non-cancelable and unconditional obligations.

SUBSEQUENT EVENTS	12 Months Ended
SUBSEQUENT EVENTS	Oct. 29, 2022
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS Acquisitions During the first quarter of fiscal 2023, Ciena closed on the acquisition of Benu Networks, a portfolio of cloud-native software solutions, including a virtual Broadband Network Gateway ((v)BNG), that complement Ciena’s existing portfolio of broadband access solutions. On November 22, 2022, Ciena entered into a definitive agreement to acquire Tibit Communications, Inc. Tibit combines passive optical network (PON)-specific hardware and operating software into a micro pluggable transceiver that can be integrated into a carrier-grade Ethernet switch and which will strengthen Ciena’s portfolio to deliver next-generation PON solutions that support residential, enterprise and mobility use cases. Ciena will acquire the remaining shares of Tibit that it does not already own in a cash-free, debt-free transaction currently valued at approximately $210 million, subject to adjustments for cash and debt, with the merger consideration to be paid in cash. In addition, Ciena will enter into certain employee retention arrangements in connection with the transaction. The transaction is expected to close during Ciena’s first quarter fiscal 2023.

CIENA CORPORATION AND SIGNIFICANT ACCOUNTING POLICIES AND ESTIMATES (Policies)	12 Months Ended
	Oct. 29, 2022
Accounting Policies [Abstract]
Principles of Consolidation	The accompanying consolidated financial statements include the accounts of Ciena and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.
Fiscal Year	Ciena has a 52 or 53-week fiscal year, which ends on the Saturday nearest to the last day of October in each year (October 29, 2022, October 30, 2021 and October 31, 2020 for the periods reported). Fiscal 2022, fiscal 2021 and fiscal 2020 each consisted of a 52-week fiscal year.
Business Combinations	Ciena records acquisitions using the purchase method of accounting. All of the assets acquired, liabilities assumed, contractual contingencies and contingent consideration are recognized at their fair value as of the acquisition date. The excess of the purchase price over the estimated fair values of the net tangible and net intangible assets acquired is recorded as goodwill. The application of the purchase method of accounting for business combinations requires management to make significant estimates and assumptions in the determination of the fair value of assets acquired and liabilities assumed, in order to properly allocate purchase price consideration between assets that are depreciated and amortized from goodwill. These assumptions and estimates include a market participant’s use of the asset and the appropriate discount rates for a market participant. Ciena’s estimates are based on historical experience, information obtained from the management of the acquired companies and, when appropriate, include assistance from independent third-party appraisal firms. Significant assumptions and estimates can include, but are not limited to, the cash flows that an asset is expected to generate in the future, the appropriate weighted-average cost of capital and the cost savings expected to be derived from acquiring an asset. These estimates are inherently uncertain and unpredictable. In addition, unanticipated events and circumstances may occur which may affect the accuracy or validity of such estimates.
Use of Estimates	The preparation of the financial statements and related disclosures in conformity with Generally Accepted Accounting Principles (“GAAP”) requires management to make estimates and judgments that affect the amounts reported in the consolidated financial statements and accompanying notes. Estimates are used for selling prices for multiple element arrangements, shared-based compensation, bad debts, valuation of inventories and investments, recoverability of intangible assets, other long-lived assets and goodwill, income taxes, warranty obligations, restructuring liabilities, derivatives, contingencies and litigation. Ciena bases its estimates on historical experience and assumptions that it believes are reasonable. Actual results may differ materially from management’s estimates.
Cash and Cash Equivalents	Ciena considers all highly liquid investments purchased with original maturities of three months or less to be cash equivalents. Any restricted cash collateralizing letters of credit is included in other current assets and other long-term assets depending on the duration of the restriction.
Investments	Ciena’s investments in debt securities are classified as available-for-sale and reported at fair value, with unrealized gains and losses recorded in accumulated other comprehensive income (loss). Ciena recognizes losses in the income statement when it determines that declines in the fair value of its investments below their cost basis are other-than-temporary. In determining whether a decline in fair value is other-than-temporary, Ciena considers various factors, including market price (when available), investment ratings, the financial condition and near-term prospects of the investee, the length of time and the extent to which the fair value has been less than Ciena’s cost basis, and Ciena’s intent and ability to hold the investment until maturity or for a period of time sufficient to allow for any anticipated recovery in market value. Ciena considers all marketable debt securities that it expects to convert to cash within one year or less to be short-term investments, with all others considered to be long-term investments.Ciena has minority equity investments in privately held technology companies that are classified in other long-term assets. These investments are carried at cost because Ciena owns less than 20% of the voting equity and does not have the ability to exercise significant influence over the company. Ciena monitors these investments for impairment and makes appropriate reductions to the carrying value when necessary. As of October 29, 2022, the combined carrying value of these investments was $20.7 million. Ciena elects to estimate the fair value at cost minus impairment, if any, plus or minus observable price changes in orderly transactions for identical or similar investments of the same issuer. Ciena evaluates these investments for impairment or observable price changes quarterly and records adjustments to interest and other income (loss), net on the Consolidated Statements of Operations.
Inventories	Inventories are stated at the lower of cost or market, with cost computed using standard cost, which approximates actual cost, on a first-in, first-out basis. Ciena records a provision for excess and obsolete inventory when an impairment has been identified.Ciena writes down its inventory for estimated obsolescence or unmarketable inventory by an amount equal to the difference between the cost of inventory and the estimated net realizable value based on assumptions about future demand, which are affected by changes in Ciena’s strategic direction, discontinuance of a product or introduction of newer versions of products, declines in the sales of or forecasted demand for certain products, and general market conditions.
Segment Reporting	Ciena’s chief operating decision maker, its chief executive officer, evaluates the Company’s performance and allocates resources based on multiple factors, including measures of segment profit (loss). Operating segments are defined as components of an enterprise that engage in business activities that may earn revenue and incur expense, for which discrete financial information is available, and for which such information is evaluated regularly by the chief operating decision maker for purposes of allocating resources and assessing performance. Ciena has the following operating segments for reporting purposes: (i) Networking Platforms; (ii) Platform Software and Services; (iii) Blue Planet Automation Software and Services; and (iv) Global Services.
Goodwill	Goodwill is the excess of the purchase price over the fair values assigned to the net assets acquired in a business combination. Ciena tests goodwill for impairment on an annual basis, which it has determined to be the last business day of fiscal September each year. Ciena also tests goodwill for impairment between annual tests if an event occurs or circumstances change that would, more likely than not, reduce the fair value of the reporting unit below its carrying value. Annually, Ciena tests goodwill impairment qualitatively, or quantitatively by comparing the fair value of the reporting unit with the unit’s carrying amount, including goodwill. If this test indicates that the fair value is less than the carrying value, then an impairment loss is recognized limited to the total amount of goodwill allocated to that reporting unit. A non-cash goodwill impairment charge would have the effect of decreasing earnings or increasing losses in such period. If Ciena is required to take a substantial impairment charge, its operating results would be materially adversely affected in such period.
Long-lived Assets	Long-lived assets include: equipment, building, furniture and fixtures, operating right-of-use (“ROU”) assets, finite-lived intangible assets and maintenance spares. Ciena tests long-lived assets for impairment whenever triggering events or changes in circumstances indicate that the asset’s carrying amount is not recoverable from its undiscounted cash flows. An impairment loss is measured as the amount by which the carrying amount of the asset or asset group exceeds its fair value. Ciena’s long-lived assets are assigned to asset groups that represent the lowest level for which cash flows can be identified.
Equipment, Building, Furniture and Fixtures and Internal Use Software	Equipment, building, furniture and fixtures are recorded at cost. Depreciation and amortization are computed using the straight-line method, generally over useful lives of three years to five years for equipment and furniture and fixtures and the shorter of useful life or lease term for leasehold improvements. Qualifying internal use software and website development costs incurred during the application development stage, which consist primarily of outside services and purchased software license costs, are capitalized and amortized straight-line over the estimated useful lives of two years to five years.
Leases	At the inception of a contract, Ciena must determine whether the contract is or contains a lease. The contract is or contains a lease if the contract conveys the right to control the use of the property, plant, or equipment for a designated term in exchange for consideration. Ciena’s evaluation of its contracts follows the assessment of whether there is a right to obtain substantially all of the economic benefits from the use and the right to direct the use of the identified asset in the contract. Operating leases are included in the Operating ROU assets, Operating lease liabilities and Long-term operating lease liabilities in the Consolidated Balance Sheets. Finance leases are included in Equipment, building, furniture and fixtures, net (“Finance ROU assets”), Accrued liabilities and other short-term obligations and Other long-term obligations in the Consolidated Balance Sheets. Ciena has operating and finance leases that primarily relate to real property. Ciena has elected not to capitalize leases with a term of 12 months or less without a purchase option that it is likely to exercise. Ciena has elected not to separate lease and non-lease components of operating and finance leases. Lease components are payment items directly attributable to the use of the underlying asset, while non-lease components are explicit elements of a contract not directly related to the use of the underlying asset, including pass-through operating expenses like common area maintenance and utilities. Operating ROU assets and lease liabilities and Finance ROU assets and lease liabilities are recognized on the Consolidated Balance Sheets at the present value of the future lease payments over the life of the lease term. Ciena uses discount rates based on incremental borrowing rates, on a collateralized basis, for the respective underlying assets, for terms similar to the respective leases when implicit rates for leases are not determinable. Operating lease costs are included as rent expense in the Consolidated Statements of Operations. Fixed base payments on operating leases paid directly to the lessor are recorded as lease expense on a straight-line basis. Related variable payments based on usage, changes in an index, or market rate are expensed as incurred. Finance ROU assets are generally amortized on a straight-line basis over the lease term with the interest expense on the lease liability recorded using the interest method. The amortization and interest expense are recorded separately in the Consolidated Statements of Operations.
Intangible Assets	Ciena has recorded finite-lived intangible assets as a result of several acquisitions. Finite-lived intangible assets are carried at cost less accumulated amortization. Amortization is computed using the straight-line method over the expected economic lives of the respective assets, up to seven years, which approximates the use of intangible assets.
Maintenance Spares	Maintenance spares are recorded at cost. Spares usage cost is expensed ratably over four years.
Concentrations	Substantially all of Ciena’s cash and cash equivalents are maintained at a small number of major U.S. financial institutions. The majority of Ciena’s cash equivalents consist of money market funds. Deposits held with banks may exceed the amount of insurance provided on such deposits. Because these deposits generally may be redeemed upon demand, management believes that they bear minimal risk. Historically, a significant percentage of Ciena’s revenue has been concentrated among sales to a small number of large communications service providers and Web-scale providers. Consolidation among Ciena’s customers has increased this concentration. Consequently, Ciena’s accounts receivable are concentrated among these customers. See Note 2 below. Additionally, Ciena’s access to certain materials or components is dependent on sole or limited source suppliers. The inability of any of these suppliers to fulfill Ciena’s supply requirements, or significant changes in supply cost, could affect future results. Ciena relies on a small number of contract manufacturers to perform the majority of the manufacturing for its products. If Ciena cannot effectively manage these manufacturers or forecast future demand, or if these manufacturers fail to deliver products or components on time, Ciena’s business and results of operations may suffer.
Revenue Recognition	Ciena recognizes revenue when control of the promised products or services is transferred to its customer, in an amount that reflects the consideration to which Ciena expects to be entitled in exchange for those products or services. Ciena determines revenue recognition by applying the following five-step approach: •identification of the contract, or contracts, with a customer; •identification of the performance obligations in the contract; •determination of the transaction price; •allocation of the transaction price to the performance obligations in the contract; and •recognition of revenue when, or as, Ciena satisfies a performance obligation. Generally, Ciena makes sales pursuant to purchase orders placed by customers under framework agreements that govern the general commercial terms and conditions of the sale of Ciena’s products and services. These purchase orders under framework agreements are used to determine the identification of the contract or contracts with this customer. Purchase orders typically include the description, quantity, and price of each product or service purchased. Purchase orders may include one-line bundled pricing for both products and services. Accordingly, purchase orders can include various combinations of products and services that are generally distinct and accounted for as separate performance obligations. Ciena evaluates each promised product and service offering to determine whether it represents a distinct performance obligation. In doing so, Ciena considers, among other things, customary business practices, whether the customer can benefit from the product or service on its own or together with other resources that are readily available, and whether Ciena’s commitment to transfer the product or service to the customer is separately identifiable from other obligations in the purchase order. For transactions where Ciena delivers the product or services, Ciena is typically the principal and records revenue and costs of goods sold on a gross basis. Purchase orders are invoiced based on the terms set forth either in the purchase order or the framework agreement, as applicable. Generally, sales of products and software licenses are invoiced upon shipment or delivery. Maintenance and software subscription services are invoiced quarterly or annually in advance of the service term. Ciena’s other service offerings are generally invoiced upon completion of the service. Payment terms and cash received typically range from 30 to 90 days from the invoicing date. Historically, Ciena has not provided any material financing arrangements to its customers. As a practical expedient, Ciena does not adjust the amount of consideration it will receive for the effects of a significant financing component as it expects, at contract inception, that the period between Ciena’s transfer of the products or services to the customer and customer payment for the products or services will be one year or less. Shipping and handling fees invoiced to customers are included in revenue, with the associated expense included in product cost of goods sold. Ciena records revenue net of any associated sales taxes. Ciena recognizes revenue upon the transfer of control of promised products or services to a customer. Transfer of control occurs once the customer has the contractual right to use the product, generally upon shipment or delivery to the customer. Transfer of control can also occur over time for services such as software subscription, maintenance, installation, and various professional services as the customer receives the benefit over the contract term. Significant Judgments Revenue is allocated among performance obligations based on standalone selling price (“SSP”). SSP reflects the price at which Ciena would expect to sell that product or service on a stand-alone basis at contract inception and that Ciena would expect to be entitled to receive for the promised products or services. SSP is estimated for each distinct performance obligation, and judgment may be required in its determination. The best evidence of SSP is the observable price of a product or service when Ciena sells the products separately in similar circumstances and to similar customers. In instances where SSP is not directly observable, Ciena determines SSP using information that may include market conditions and other observable inputs. Ciena applies judgment in determining the transaction price, as Ciena may be required to estimate variable consideration when determining the amount of revenue to recognize. Variable consideration can include various rebate, cooperative marketing, and other incentive programs that Ciena offers to its distributors, partners and customers. When determining the amount of revenue to recognize, Ciena estimates the expected usage of these programs, applying the expected value or most likely estimate and updates the estimate at each reporting period as actual utilization data becomes available. Ciena also considers any customer right of return and any actual or potential payment of liquidated damages, contractual or similar penalties, or other claims for performance failures or delays in determining the transaction price, where applicable. When transfer of control is judged to be over time for installation and professional service arrangements, Ciena applies the input method to determine the amount of revenue to be recognized in a given period. Utilizing the input method, Ciena recognizes revenue based on the ratio of actual costs incurred to date to the total estimated costs expected to be incurred. Revenue for software subscription and maintenance is recognized ratably over the period during which the services are performed. Capitalized Contract Acquisition Costs Ciena has considered the impact of the guidance in ASC 340-40, Other Assets and Deferred Costs; Contracts with Customers, and the interpretations of the Financial Accounting Standards Board (“FASB”) Transition Resource Group for Revenue Recognition with respect to capitalization and amortization of incremental costs of obtaining a contract. In conjunction with this interpretation, Ciena considers each customer purchase in combination with the corresponding framework agreement, if applicable, as a contract. Ciena has elected to implement the practical expedient, which allows for incremental costs to be recognized as an expense when incurred if the period of the asset recognition is one year or less. If the period of the asset recognition is greater than one year, Ciena amortizes these costs over the period of performance. Ciena considers sales commissions incurred upon receipt of purchase orders placed by customers as incremental costs to obtain such purchase orders. The practical expedient method is applied to the purchase order as a whole and thus the capitalized costs of obtaining a purchase order is applied even if the purchase order contains more than one performance obligation. In cases where a purchase order includes various distinct products or services with both short-term (one year or less) and long-term (more than a year) performance periods, the cost of commissions incurred for the total value of the purchase order is capitalized and subsequently amortized as each performance obligation is recognized.
Warranty Accruals	Ciena provides for the estimated costs to fulfill customer warranty obligations upon recognition of the related revenue. Estimated warranty costs include estimates for material costs, technical support labor costs and associated overhead. Warranty is included in cost of goods sold and is determined based on actual warranty cost experience, estimates of component failure rates and management’s industry experience. Ciena’s sales contracts do not permit the right of return of the product by the customer after the product has been accepted.
Allowance for Credit Losses for Accounts Receivable and Contract Assets	Ciena estimates its allowances for credit losses using relevant available information from internal and external sources, related to past events, current conditions and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. When assessing for credit losses, Ciena determines collectability by pooling assets with similar characteristics. The allowances for credit losses are each measured on a collective basis when similar risk characteristics exist. The allowances for credit losses are each measured by multiplying the exposure probability of default (the probability the asset will default within a given time frame) by the loss given default rate (the percentage of the asset not expected to be collected due to default) based on the pool of assets. Probability of default rates are published by third-party credit rating agencies. Adjustments to Ciena’s exposure probability may take into account a number of factors, including, but not limited to, various customer-specific factors, the potential sovereign risk of the geographic locations in which the customer is operating and macroeconomic conditions. These factors are updated regularly or when facts and circumstances indicate that an update is deemed necessary. Accounts Receivable Factoring Ciena has entered into factoring agreements to sell certain receivables to unrelated third-party financial institution on a non-recourse basis. These transactions are accounted for in accordance with ASC Topic 860, “Transfers and Servicing” and result in a reduction in accounts receivable because the agreements transfer effective control over and risk related to the receivables to the buyers. Ciena's factoring agreements do not allow for recourse in the event of uncollectability, and Ciena does not retain any interest in the underlying accounts receivable once sold. Trade accounts receivables balances sold are removed from the consolidated balance sheets and cash received is reflected as cash provided by (used in) operating activities in the Consolidated Statements of Cash Flow. Factoring related interest expense is recorded to interest and other income (loss), net on the Consolidated Statements of Operations. See Note 9 below.
Research and Development	Ciena charges all research and development costs to expense as incurred. Types of expense incurred in research and development include employee compensation, prototype equipment, consulting and third-party services, depreciation, facility costs and information technology.
Government Grants	Ciena accounts for proceeds from government grants as a reduction of expense when there is reasonable assurance that Ciena has met the required conditions associated with the grant and that grant proceeds will be received. Grant benefits are recorded to the particular line item of the Consolidated Statement of Operations to which the grant activity relates.
Advertising Costs	Ciena expenses all advertising costs as incurred.
Legal Costs	Ciena expenses legal costs associated with litigation as incurred.
Share-Based Compensation Expense	Ciena measures and recognizes compensation expense for share-based awards and employee stock purchases related to its Amended and Restated 2003 Employee Stock Purchase Plan (the “ESPP”) based on estimated fair values on the date of grant. Ciena estimates the fair value of employee stock purchases related to the ESPP using the Black-Scholes option-pricing model. Ciena recognizes the estimated fair value of restricted stock units subject only to service-based vesting conditions by multiplying the number of shares underlying the award by the closing price per share of Ciena common stock on the grant date. In each case, Ciena only recognizes expense in its Consolidated Statements of Operations for those restricted stock units that ultimately vest. Awards with performance-based vesting conditions (i) require the achievement of certain operational, financial or other performance criteria or targets or (ii) vest based on Ciena’s total stockholder return as compared to an index of peer companies, in whole or in part. Ciena recognizes the estimated fair value of restricted stock units subject to performance-based vesting conditions other than total stockholder return by assuming the satisfaction of any performance-based objectives at the “target” level and multiplying the corresponding number of shares earned based upon such achievement by the closing price per share of Ciena common stock on the grant date. Ciena recognizes the estimated fair value of performance based awards subject to total stockholder return as compared to an index of peer companies using a Monte Carlo simulation valuation model on the date of grant. At the end of each reporting period, Ciena reassesses the probability of achieving the performance targets and the performance period required to meet those targets.
Stock Repurchase Program	Shares repurchased pursuant to Ciena’s stock repurchase program are immediately retired upon purchase. Repurchased common stock is reflected as a reduction of stockholders’ equity. Ciena’s accounting policy related to its share repurchases is to reduce its common stock based on the par value of the shares and to reduce its capital surplus for the excess of the repurchase price over the par value. Since the inception of its stock repurchase programs, Ciena has had an accumulated deficit balance; therefore, the excess over the par value has been applied to additional paid-in capital. Once Ciena has retained earnings, the excess will be charged entirely to retained earnings.
Income Taxes	Ciena accounts for income taxes using an asset and liability approach. This approach recognizes deferred tax assets and liabilities (“DTA”) for the expected future tax consequences attributable to differences between the carrying amounts of assets and liabilities for financial reporting purposes and their respective tax bases, and for operating loss and tax credit carryforwards. In estimating future tax consequences, Ciena considers all expected future events other than the enactment of changes in tax laws or rates. Valuation allowances are provided if, based on the weight of the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. In the ordinary course of business, transactions occur for which the ultimate outcome may be uncertain. In addition, tax authorities periodically audit Ciena’s income tax returns. These audits examine significant tax filing positions, including the timing and amounts of deductions and the allocation of income tax expenses among tax jurisdictions. Ciena is currently under audit in India for 2012 through 2021, in Canada for 2014 through 2016 and 2020 through 2021, and in the United Kingdom for 2016 through 2020. Management does not expect the outcome of these audits to have a material adverse effect on Ciena’s consolidated financial position, results of operations or cash flows. Ciena’s major tax jurisdictions and the earliest open tax years are as follows: United States (2019), United Kingdom (2016), Canada (2014), and India (2012). Limited adjustments can be made to federal U.S. tax returns in earlier years in order to reduce net operating loss carryforwards. Ciena classifies interest and penalties related to uncertain tax positions as a component of income tax expense. Ciena has not provided for U.S. deferred income taxes on the cumulative unremitted earnings of its non-U.S. affiliates, as it plans to indefinitely reinvest these foreign earnings outside the U.S. As of October 29, 2022, the cumulative amount of such temporary differences for which a deferred tax liability has not been recognized totaled approximately $477.0 million. If these earnings were distributed to the U.S. in the form of dividends, or otherwise, or if the shares of the relevant foreign subsidiaries were sold or otherwise transferred, Ciena would be subject to additional U.S. income taxes (subject to an adjustment for foreign tax credits) and foreign withholding taxes. Ciena would also be subject to additional foreign withholding taxes of approximately $33.0 million. Additionally, there are no other significant temporary differences for which a deferred tax liability has not been recognized. Ciena is required to record excess tax benefits or tax deficiencies related to stock-based compensation as income tax benefit or expense when share-based awards vest or are settled. The Tax Cuts and Jobs Act (the “Tax Act”) includes provisions that affected Ciena starting in fiscal 2019, including a provision designed to tax global intangible low-taxed income (“GILTI”). An accounting policy choice is allowed to either treat taxes due on future U.S. inclusions related to GILTI in taxable income as a current-period expense when incurred (the “period cost method”) or factor such amounts into the measurement of deferred taxes (the “deferred method”). The calculation of the deferred balance with respect to the GILTI tax provisions will depend, in part, on analyzing global income to determine whether future U.S. inclusions in taxable income are expected related to GILTI and, if so, what the impact is expected to be. Ciena is electing to use the period cost method for future GILTI inclusions. Additionally, Ciena is electing to use the incremental cash tax savings approach when determining whether a valuation allowance needs to be recorded against the U.S. net operating loss (“NOL”) due to the GILTI inclusions. The Tax Act also introduced an alternative tax known as the base erosion and anti-abuse tax (“BEAT”). An accounting policy choice has been made to consider BEAT as a period cost when incurred.
Loss Contingencies	Ciena is subject to the possibility of various losses arising in the ordinary course of business. These may relate to disputes, litigation and other legal actions. Ciena considers the likelihood of loss or the incurrence of a liability, as well as Ciena’s ability to estimate the amount of loss reasonably, in determining loss contingencies. An estimated loss contingency is accrued when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Ciena regularly evaluates current information available to it in order to determine whether any accruals should be adjusted and whether new accruals are required.
Fair Value of Financial Instruments	The carrying value of Ciena’s cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximates fair market value due to the relatively short period of time to maturity. For information related to the fair value of Ciena’s short-term and long-term debt, see Note 19 below. Fair value for the measurement of financial assets and liabilities is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. Ciena utilizes a valuation hierarchy for disclosure of the inputs for fair value measurement. This hierarchy prioritizes the inputs into three broad levels as follows: •Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities; •Level 2 inputs are quoted prices for identical or similar assets or liabilities in less active markets or model-derived valuations in which significant inputs are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument; and •Level 3 inputs are unobservable inputs based on Ciena’s assumptions used to measure assets and liabilities at fair value. The fair values are determined based on model-based techniques using inputs Ciena could not corroborated with market data. By distinguishing between inputs that are observable in the marketplace, and therefore more objective, and those that are unobservable, and therefore more subjective, the hierarchy is designed to indicate the relative reliability of the fair value measurements. A financial asset’s or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.
Restructuring	From time to time, Ciena takes actions to align its workforce, facilities and operating costs with perceived market opportunities, business strategies and changes in market and business conditions and redesign business processes. Ciena recognizes a liability for the cost associated with an exit or disposal activity in the period in which the liability is incurred, except for one-time employee termination benefits related to a service period, typically of more than 60 days, which are accrued over the service period.
Foreign Currency	Certain of Ciena’s foreign branch offices and subsidiaries use the U.S. Dollar as their functional currency because Ciena Corporation, as the U.S. parent entity, exclusively funds the operations of these branch offices and subsidiaries. For those subsidiaries using the local currency as their functional currency, assets and liabilities are translated at exchange rates in effect at the balance sheet date, and the statement of operations is translated at a monthly average rate. Resulting translation adjustments are recorded directly to a separate component of stockholders’ equity. Where the monetary assets and liabilities are transacted in a currency other than the entity’s functional currency, re-measurement adjustments are recorded in interest and other income (loss), net on the Consolidated Statements of Operations.
Derivatives	From time to time, Ciena uses foreign currency forward contracts to reduce variability in certain forecasted non-U.S. Dollar denominated cash flows. Generally, these derivatives have maturities of 24 months or less. Ciena also has interest rate swap arrangements to reduce variability in certain forecasted interest expense associated with its term loan. All of these derivatives are designated as cash flow hedges. At the inception of the cash flow hedge, and on an ongoing basis, Ciena assesses whether the derivative has been effective in offsetting changes in cash flows attributable to the hedged risk during the hedging period. The derivative’s net gain or loss is initially reported as a component of accumulated other comprehensive income (loss), and upon occurrence of the forecasted transaction, is subsequently reclassified to the line item in the Consolidated Statements of Operations to which the hedged transaction relates. Ciena records derivative instruments in the Consolidated Statements of Cash Flows within operating, investing, or financing activities consistent with the cash flows of the hedged items. From time to time, Ciena uses foreign currency forward contracts to hedge certain balance sheet foreign exchange exposures. These forward contracts are not designated as hedges for accounting purposes, and any net gain or loss associated with these derivatives is reported in interest and other income (loss), net on the Consolidated Statements of Operations.
Computation of Net Income (Loss) per Share	Ciena calculates basic earnings per share by dividing earnings attributable to common stock by the weighted average number of common shares outstanding for the period. Diluted net income per potential common share (“Diluted EPS”) includes other potential dilutive shares that would be outstanding if securities or other contracts to issue common stock were exercised or converted into common stock. Ciena uses a dual presentation of basic net income per common share (“Basic EPS”) and Diluted EPS on the face of its income statement. A reconciliation of the numerator and denominator used for the Basic EPS and Diluted EPS computations is set forth in Note 21 below.
Software Development Costs	Ciena develops software for sale to its customers. GAAP requires the capitalization of certain software development costs that are incurred subsequent to the date technological feasibility is established and prior to the date the product is generally available for sale. The capitalized cost is then amortized using the straight-line method over the estimated life of the product. Ciena defines technological feasibility as being attained at the time a working model is completed. To date, the period between Ciena achieving technological feasibility and the general availability of such software has been short, and software development costs qualifying for capitalization have been insignificant. Accordingly, Ciena has not capitalized any software development costs.
Newly Issued Accounting Standards - Effective and Not Yet Effective	Newly Issued Accounting Standards - Effective In June 2016, the FASB issued Accounting Standards Update No. 2016-13 (“ASU 2016-13”), Financial Instruments - Credit Losses, which requires measurement and recognition of expected credit losses for financial assets held based on historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Ciena adopted ASU 2016-13 on a modified retrospective basis in the first quarter of fiscal 2021 through a cumulative-effect adjustment at the beginning of the period of adoption and did not restate prior periods. The standard primarily impacts the value of Ciena’s accounts receivable, net and contract assets for unbilled accounts receivable, net. Adoption of ASU 2016-13 did not have a material effect on Ciena’s financial position or results of operations. In December 2019, the FASB issued ASU No. 2019-12 (“ASU 2019-12”), Income Taxes (ASC 740): Simplifying the Accounting for Income Taxes, which simplifies the accounting for income taxes by removing certain exceptions to the general principles in ASC 740. The amendments also improve consistent application of and simplify GAAP for other areas of ASC 740 by clarifying and amending existing guidance. Most amendments within this standard are required to be applied on a prospective basis, while certain amendments must be applied on a retrospective or modified retrospective basis. Ciena adopted ASU 2019-12 on a prospective basis in the first quarter of fiscal 2022. The adoption of ASU 2019-12 did not have a material impact on Ciena’s consolidated financial statements and related disclosures. In March 2020, the FASB issued ASU No. 2020-04 (“ASU 2020-04”), Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2020-04 provides temporary optional guidance on contract modifications and hedging accounting to ease the financial reporting burdens of the expected market transition from the London Interbank Offered Rate (“LIBOR”) to alternative reference rates. In January 2021, the FASB issued ASU 2021-01, which refines the scope of Topic 848 and clarifies some of its guidance as part of the FASB’s monitoring of global reference rate activities. The new guidance was effective upon issuance, and Ciena is allowed to elect to apply the amendments prospectively through December 31, 2022. Ciena adopted ASU 2020-04 and ASU 2021-01 on a prospective basis in fiscal 2022. The adoption of ASU 2020-04 and ASU 2021-01 did not have a material impact on Ciena’s consolidated financial statements and related disclosures. In November 2021, the FASB issued ASU No. 2021-10 (“ASU 2021-10”), Government Assistance, to increase transparency of government assistance including the disclosure of (1) the types of assistance, (2) an entity’s accounting for the assistance, and (3) the effect of the assistance on an entity’s financial statements. ASU 2021-10 is effective for annual periods beginning after December 15, 2021. Early adoption is permitted. Ciena early adopted ASU 2021-10 during fiscal 2022. The adoption of ASU 2021-10 did not have a material impact on Ciena’s consolidated financial statements and related disclosures. Newly Issued Accounting Standards - Not Yet Effective In October 2021, the FASB issued ASU No. 2021-08 (“ASU 2021-08”), Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers to improve the accounting for acquired revenue contracts with customers in a business combination to address recognition of an acquired contract liability and payment terms and their effect on subsequent revenue recognized by the acquirer. ASU 2021-08 is effective for annual periods beginning after December 15, 2022 on a prospective basis. Early adoption is permitted. Ciena is currently evaluating the impact of this accounting standard update on its consolidated financial statements and related disclosures.

REVENUE (Tables)

12 Months Ended

Oct. 29, 2022

Revenue from Contract with Customer [Abstract]

Schedule Of Disaggregation of revenue

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


	Year Ended October 29, 2022
	Networking Platforms		Platform Software and Services		Blue Planet Automation Software and Services		Global Services		Total
Product lines:
Converged Packet Optical	$	2,379,931	$	—	$	—	$	—	$	2,379,931
Routing and Switching	398,439		—		—		—		398,439
Platform Software and Services	—		277,191		—		—		277,191
Blue Planet Automation Software and Services	—		—		76,567		—		76,567
Maintenance Support and Training	—		—		—		292,375		292,375
Installation and Deployment	—		—		—		157,443		157,443
Consulting and Network Design	—		—		—		50,715		50,715
Total revenue by product line	$	2,778,370	$	277,191	$	76,567	$	500,533	$	3,632,661

Timing of revenue recognition:
Products and services at a point in time	$	2,778,370	$	85,691	$	25,540	$	44,091	$	2,933,692
Products and services transferred over time	—		191,500		51,027		456,442		698,969
Total revenue by timing of revenue recognition	$	2,778,370	$	277,191	$	76,567	$	500,533	$	3,632,661


	Year Ended October 30, 2021
	Networking Platforms		Platform Software and Services		Blue Planet Automation Software and Services		Global Services		Total
Product lines:
Converged Packet Optical	$	2,553,509	$	—	$	—	$	—	$	2,553,509
Routing and Switching	271,796		—		—		—		271,796
Platform Software and Services	—		229,588		—		—		229,588
Blue Planet Automation Software and Services	—		—		77,247		—		77,247
Maintenance Support and Training	—		—		—		283,350		283,350
Installation and Deployment	—		—		—		171,489		171,489
Consulting and Network Design	—		—		—		33,705		33,705
Total revenue by product line	$	2,825,305	$	229,588	$	77,247	$	488,544	$	3,620,684

Timing of revenue recognition:
Products and services at a point in time	$	2,825,305	$	80,359	$	27,621	$	14,923	$	2,948,208
Products and services transferred over time	—		149,229		49,626		473,621		672,476
Total revenue by timing of revenue recognition	$	2,825,305	$	229,588	$	77,247	$	488,544	$	3,620,684


	Year Ended October 31, 2020
	Networking Platforms		Platform Software and Services		Blue Planet Automation Software and Services		Global Services		Total
Product lines:
Converged Packet Optical	$	2,547,647	$	—	$	—	$	—	$	2,547,647
Routing and Switching	267,416		—		—		—		267,416
Platform Software and Services	—		197,809		—		—		197,809
Blue Planet Automation Software and Services	—		—		62,632		—		62,632
Maintenance Support and Training	—		—		—		269,354		269,354
Installation and Deployment	—		—		—		152,003		152,003
Consulting and Network Design	—		—		—		35,296		35,296
Total revenue by product line	$	2,815,063	$	197,809	$	62,632	$	456,653	$	3,532,157

Timing of revenue recognition:
Products and services at a point in time	$	2,815,063	$	69,099	$	19,583	$	14,363	$	2,918,108
Products and services transferred over time	—		128,710		43,049		442,290		614,049
Total revenue by timing of revenue recognition	$	2,815,063	$	197,809	$	62,632	$	456,653	$	3,532,157

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


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Geographic distribution:
Americas	$	2,636,840	$	2,525,619	$	2,469,278
EMEA	555,215		670,462		591,468
APAC	440,606		424,603		471,411
Total revenue by geographic distribution	$	3,632,661	$	3,620,684	$	3,532,157

For the periods below, the only customers that accounted for at least 10% of Ciena’s revenue were as follows (in thousands):


	October 29, 2022		October 30, 2021		October 31, 2020
AT&T	$	433,418	$	447,403	$	373,163
Verizon	402,787		n/a		n/a

Total	$	836,205	$	447,403	$	373,163

________________________________


n/a			Denotes revenue representing less than 10% of total revenue for the period

Schedule Of Contract balances

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


	Balance at October 29, 2022		Balance at October 30, 2021
Accounts receivable, net	$	920,772	$	884,958
Contract assets for unbilled accounts receivable, net	$	156,039	$	101,355
Deferred revenue	$	200,235	$	175,464

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


	October 29, 2022		October 30, 2021
Products	$	19,814	$	12,859
Services	180,421		162,605
Total deferred revenue	200,235		175,464
Less current portion	(137,899)		(118,007)
Long-term deferred revenue	$	62,336	$	57,457

CANADIAN EMERGENCY WAGE SUBSIDY (Tables)

12 Months Ended

Oct. 29, 2022

Unusual or Infrequent Items, or Both [Abstract]

Schedule of Canadian emergency wage subsidy

The following table summarizes CEWS for the period indicated (in thousands):


	Year Ended October 30, 2021

Product	$	4,283
Service	2,667
CEWS benefit in cost of goods sold	6,950
Research and development	29,519
Sales and marketing	2,604
General and administrative	2,207
CEWS benefit in operating expense	34,330
Total CEWS benefit	$	41,280

BUSINESS COMBINATIONS (Tables)

12 Months Ended

Oct. 29, 2022

Business Combination and Asset Acquisition [Abstract]

Schedule of acquired assets and assumed liabilities

The following table summarizes the final purchase price allocation related to the acquisitions based on the estimated fair value of the acquired assets and assumed liabilities (in thousands):


	Amount
Cash and cash equivalents	$	201
Prepaid expenses and other	1,614
Equipment, furniture and fixtures	694
Customer relationships and contracts	15,800
Developed technology	32,491
Goodwill	17,698
Accrued liabilities	(4,434)
Total purchase consideration	$	64,064

The following table summarizes the final purchase price allocation related to the acquisition based on the estimated fair value of the acquired assets and assumed liabilities (in thousands):


	Amount
Cash and cash equivalents	$	5,718
Accounts receivable	610
Prepaid expenses and other	536
Equipment, furniture and fixtures	17
Goodwill	13,055
Customer relationships and contracts	400
Developed technology	22,200
Accounts payable	(47)
Accrued liabilities	(286)
Deferred revenue	(1,493)
Deferred tax liability	(6,692)
Total purchase consideration	$	34,018

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS (Tables)

12 Months Ended

Oct. 29, 2022

Restructuring and Related Activities [Abstract]

Schedule Of activity and balance of the restructuring liability accounts

The following table sets forth the restructuring activity and balance of the restructuring liability accounts, which are included in accrued liabilities and other short-term obligations on Ciena’s Consolidated Balance Sheets, for the fiscal years indicated (in thousands):


	Workforce reduction			Other restructuring activities			Total
Balance at November 2, 2019	$	3,983		$	11,160		$	15,143
Charges	7,282		(1)	15,370		(2)	22,652
Adjustments related to ASC 842	—			(11,160)		(3)	(11,160)

Cash payments	(8,350)			(15,370)			(23,720)
Balance at October 31, 2020	2,915			—			2,915
Charges	5,938		(1)	23,627		(2)	29,565


Cash payments	(8,072)			(23,627)			(31,699)
Balance at October 30, 2021	781			—			781
Charges	3,156		(1)	26,814		(2)	29,970


Cash payments	(2,722)			(22,194)			(24,916)
Balance at October 29, 2022	$	1,215		$	4,620		$	5,835
Current restructuring liabilities	$	1,215		$	4,620		$	5,835

_________________________________

(3) Represents restructuring reserve liability recognized as a reduction to Operating ROU assets, net in relation to adoption of ASC 842.

INTEREST AND OTHER INCOME (LOSS), NET (Tables)

12 Months Ended

Oct. 29, 2022

Other Income and Expenses [Abstract]

Schedule of interest and other income (loss)

The components of interest and other income (loss), net, were as follows (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Interest income	$	10,060	$	2,051	$	6,860
Gains (losses) on non-hedge designated foreign currency forward contracts	(4,018)		11,172		5,551
Foreign currency exchange gains (losses)	2,501		(14,622)		(13,022)

Unrealized gain on cost method equity investment	4,120		—		2,681
Other	(5,916)		(369)		(1,106)
Interest and other income (loss), net	$	6,747	$	(1,768)	$	964

CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS (Tables)

12 Months Ended

Oct. 29, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule Of short-term and long-term investments

As of the dates indicated, investments classified as available-for-sale are comprised of the following (in thousands):


	October 29, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. government obligations	$	137,963	$	—	$	(3,379)	$	134,584
Corporate debt securities	54,899		1		(405)		54,495
Time deposits	55,889		—		(64)		55,825
	$	248,751	$	1	$	(3,848)	$	244,904

Included in cash equivalents	$	55,530	$	—	$	—	$	55,530
Included in short-term investments	156,430		1		(2,442)		153,989
Included in long-term investments	36,791		—		(1,406)		35,385
	$	248,751	$	1	$	(3,848)	$	244,904


	October 30, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. government obligations	$	251,713	$	5	$	(197)	$	251,521

Time deposits	71,226		—		—		71,226
	$	322,939	$	5	$	(197)	$	322,747

Included in cash equivalents	$	71,226	$	—	$	—	$	71,226
Included in short-term investments	181,488		5		(10)		181,483
Included in long-term investments	70,225		—		(187)		70,038
	$	322,939	$	5	$	(197)	$	322,747

Schedule Of legal maturities of debt investments

The following table summarizes the legal maturities of debt investments at October 29, 2022 (in thousands):


	October 29, 2022
	Amortized Cost		Estimated Fair Value
Less than one year	$	211,960	$	209,519
Due in 1-2 years	36,791		35,385
	$	248,751	$	244,904

FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Oct. 29, 2022

Fair Value Disclosures [Abstract]

Schedule Of summary of the fair value of assets and liabilities recorded on a recurring basis

As of the dates indicated, the following tables summarize the fair value of assets and liabilities that were recorded at fair value on a recurring basis (in thousands):


	October 29, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	639,024	$	—	$	—	$	639,024
Bond mutual fund	71,145		—		—		71,145
Time deposits	55,825		—		—		55,825
Deferred compensation plan assets	12,751		—		—		12,751
U.S. government obligations	—		134,584		—		134,584
Corporate debt securities	—		54,495		—		54,495
Foreign currency forward contracts	—		251		—		251
Forward starting interest rate swaps	—		12,306		—		12,306
Total assets measured at fair value	$	778,745	$	201,636	$	—	$	980,381

Liabilities:
Foreign currency forward contracts	$	—	$	15,605	$	—	$	15,605

Total liabilities measured at fair value	$	—	$	15,605	$	—	$	15,605


	October 30, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	1,120,851	$	—	$	—	$	1,120,851
Bond mutual fund	75,425		—		—		75,425
Time deposits	71,226		—		—		71,226
Deferred compensation plan assets	12,968		—		—		12,968
U.S. government obligations	—		251,521		—		251,521

Foreign currency forward contracts	—		14,935		—		14,935
Total assets measured at fair value	$	1,280,470	$	266,456	$	—	$	1,546,926

Liabilities:
Foreign currency forward contracts	$	—	$	716	$	—	$	716
Forward starting interest rate swaps	—		15,928		—		15,928

Total liabilities measured at fair value	$	—	$	16,644	$	—	$	16,644

Schedule Of assets and liabilities are presented on Ciena's Condensed Consolidated Balance Sheet

As of the dates indicated, the assets and liabilities above were presented on Ciena’s Consolidated Balance Sheets as follows (in thousands):


	October 29, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	757,725	$	7,974	$	—	$	765,699
Short-term investments	8,269		145,720		—		153,989
Prepaid expenses and other	—		251		—		251
Long-term investments	—		35,385		—		35,385
Other long-term assets	12,751		12,306		—		25,057
Total assets measured at fair value	$	778,745	$	201,636	$	—	$	980,381

Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	15,605	$	—	$	15,605


Total liabilities measured at fair value	$	—	$	15,605	$	—	$	15,605


	October 30, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	1,267,502	$	—	$	—	$	1,267,502
Short-term investments	—		181,483		—		181,483
Prepaid expenses and other	—		14,935		—		14,935
Long-term investments	—		70,038		—		70,038
Other long-term assets	12,968		—		—		12,968
Total assets measured at fair value	$	1,280,470	$	266,456	$	—	$	1,546,926

Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	716	$	—	$	716
Other long-term obligations	—		15,928		—		15,928
Total liabilities measured at fair value	$	—	$	16,644	$	—	$	16,644

ACCOUNTS RECEIVABLE (Tables)

12 Months Ended

Oct. 29, 2022

Receivables [Abstract]

Schedule Of activity in allowance for doubtful accounts

The following table summarizes the activity in Ciena’s allowance for credit losses for the fiscal years indicated (in thousands):


Year Ended	Beginning Balance		Effect of adoption of new accounting standard (Note 1)		Provisions		Net Deductions		Ending Balance
October 31, 2020(1)	$	20,101	$	—	$	8,855	$	18,358	$	10,598
October 30, 2021	$	10,598	$	2,206	$	2,346	$	4,238	$	10,912
October 29, 2022(2)	$	10,912	$	—	$	4,199	$	4,153	$	10,958

INVENTORIES (Tables)

12 Months Ended

Oct. 29, 2022

Inventory Disclosure [Abstract]

Inventories

As of the dates indicated, inventories are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Raw materials	$	664,916	$	175,399
Work-in-process	18,232		10,260
Finished goods	258,584		180,800
Deferred cost of goods sold	41,084		44,765
Gross inventories	982,816		411,224
Reserve for excess and obsolescence	(36,086)		(36,959)
Inventories, net	$	946,730	$	374,265

Activity in reserve for excess and obsolete inventory

The following table summarizes the activity in Ciena’s reserve for excess and obsolete inventory for the fiscal years indicated (in thousands):


Year Ended	Beginning Balance		Provisions		Disposals		Ending Balance
October 31, 2020	$	47,322	$	24,701	$	32,386	$	39,637
October 30, 2021	$	39,637	$	17,850	$	20,528	$	36,959
October 29, 2022	$	36,959	$	16,184	$	17,057	$	36,086

PREPAID EXPENSES AND OTHER (Tables)

12 Months Ended

Oct. 29, 2022

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Prepaid expenses and other

As of the dates indicated, prepaid expenses and other are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Contract assets for unbilled accounts receivable, net	$	156,039	$	101,355
Prepaid VAT and other taxes	63,975		77,388
Prepaid expenses	55,440		62,189
Product demonstration equipment, net	35,929		29,362
Capitalized contract acquisition costs	33,516		21,753
Other non-trade receivables	24,026		18,408
Deferred deployment expense	877		264

Derivative assets	251		14,935


	$	370,053	$	325,654

EQUIPMENT, BUILDING, FURNITURE AND FIXTURES (Tables)

12 Months Ended

Oct. 29, 2022

Property, Plant and Equipment [Abstract]

Schedule Of equipment, building, furniture and fixtures

As of the dates indicated, equipment, building, furniture and fixtures are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Equipment, furniture and fixtures	$	619,160	$	599,672
Building subject to finance lease	69,247		76,123
Leasehold improvements	80,415		100,270
Equipment, building, furniture and fixtures	768,822		776,065
Accumulated depreciation and amortization	(501,043)		(491,097)
Equipment, building, furniture and fixtures, net	$	267,779	$	284,968

INTANGIBLE ASSETS (Tables)

12 Months Ended

Oct. 29, 2022

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Schedule Of Intangible assets

As of the dates indicated, intangible assets are comprised of the following (in thousands):


	October 29, 2022						October 30, 2021
	Gross Intangible		Accumulated Amortization		Net Intangible		Gross Intangible		Accumulated Amortization		Net Intangible
Developed technology	$	428,218	$	(386,300)	$	41,918	$	395,726	$	(359,828)	$	35,898

Patents and licenses	8,415		(4,228)		4,187		7,815		(3,321)		4,494
Customer relationships, covenants not to compete, outstanding purchase orders and contracts	390,271		(366,859)		23,412		375,329		(350,407)		24,922
Total intangible assets	$	826,904	$	(757,387)	$	69,517	$	778,870	$	(713,556)	$	65,314

Schedule Of Expected future amortization of finite-lived intangible assets

Expected future amortization of intangible assets for the fiscal years indicated is as follows (in thousands):


Fiscal Year	Amount
2023	$	28,828
2024	19,194
2025	13,337
2026	7,191
2027	709
Thereafter	258
	$	69,517

GOODWILL (Tables)

12 Months Ended

Oct. 29, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Of Goodwill allocated by reportable segments

The following table presents the goodwill allocated to Ciena’s operating segments as of October 29, 2022 and October 30, 2021, as well as the changes to goodwill during fiscal 2022 (in thousands):


	Balance at October 30, 2021		Acquisitions		Translation		Balance at October 29, 2022
Platform Software and Services	$	156,191	$	—	$	—	$	156,191
Blue Planet Automation Software and Services	89,049		—		—		89,049
Networking Platforms	66,405		17,698		(1,021)		83,082
Total	$	311,645	$	17,698	$	(1,021)	$	328,322

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1A
-URI https://asc.fasb.org/extlink&oid=121556970&loc=SL108378252-109267

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 55
-Paragraph 24
-URI https://asc.fasb.org/extlink&oid=122137925&loc=d3e14258-109268

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

+ Details

OTHER BALANCE SHEET DETAILS (Tables)

12 Months Ended

Oct. 29, 2022

Balance Sheet Related Disclosures [Abstract]

Schedule Of Other long-term assets

As of the dates indicated, other long-term assets are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Maintenance spares inventory, net	$	44,815	$	55,696
Cost method equity investments(1)	20,698		8,578
Deferred compensation plan assets	12,751		12,968
Forward starting interest rate swaps	12,306		—
Capitalized contract acquisition costs	6,151		5,803
Deferred debt issuance costs, net(2)	781		1,188
Restricted cash	26		58

Other	16,089		15,600
	$	113,617	$	99,891

Schedule Of Accrued liabilities

As of the dates indicated, accrued liabilities and other short-term obligations are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Compensation, payroll related tax and benefits (1)	$	126,338	$	201,119
Warranty	45,503		48,019
Vacation	26,396		31,200
Foreign currency forward contracts	15,604		716
Income taxes payable	11,472		13,577
Interest payable	4,793		598
Finance lease liabilities	3,758		3,620
Other	126,918		110,436
	$	360,782	$	409,285

(1) Reduction is primarily due to a lower accrual rate related to Ciena’s 2022 annual cash incentive compensation plan.

Schedule Of Accrued warranty

The following table summarizes the activity in Ciena’s accrued warranty for the fiscal years indicated (in thousands):


Year Ended	Beginning Balance		Current Year Provisions		Settlements		Ending Balance
October 31, 2020	$	48,498	$	22,417	$	21,047	$	49,868
October 30, 2021	$	49,868	$	17,093	$	18,942	$	48,019
October 29, 2022	$	48,019	$	17,440	$	19,956	$	45,503

Schedule Of Deferred revenue

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


	Balance at October 29, 2022		Balance at October 30, 2021
Accounts receivable, net	$	920,772	$	884,958
Contract assets for unbilled accounts receivable, net	$	156,039	$	101,355
Deferred revenue	$	200,235	$	175,464

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


	October 29, 2022		October 30, 2021
Products	$	19,814	$	12,859
Services	180,421		162,605
Total deferred revenue	200,235		175,464
Less current portion	(137,899)		(118,007)
Long-term deferred revenue	$	62,336	$	57,457

Schedule Of Other liabilities

As of the dates indicated, other long-term obligations are comprised of the following (in thousands):


	October 29, 2022		October 30, 2021
Finance lease liabilities	$	53,176	$	62,583
Interest rate swap liability	—		15,928
Income tax liability	72,644		63,412



Deferred compensation plan liability	12,535		12,877
Other	11,980		12,003
	$	150,335	$	166,803

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)

12 Months Ended

Oct. 29, 2022

Equity [Abstract]

Schedule Of Accumulated other comprehensive income (loss)

The following table summarizes the changes in accumulated balances of other comprehensive income (“AOCI”), net of tax (in thousands):


	Unrealized Gain/(Loss) on						Cumulative
	Available-for-Sale Securities		Foreign Currency Forward Contracts		Forward Starting Interest Rate Swaps		Foreign Currency Translation Adjustment		Total
Balance at November 2, 2019	$	152	$	925	$	(13,686)	$	(9,475)	$	(22,084)
Other comprehensive loss before reclassifications	(107)		(3,891)		(12,302)		(4,174)		(20,474)
Amounts reclassified from AOCI	—		2,747		4,453		—		7,200
Balance at October 31, 2020	45		(219)		(21,535)		(13,649)		(35,358)
Other comprehensive gain (loss) before reclassifications	(209)		16,856		(261)		20,215		36,601
Amounts reclassified from AOCI	—		(10,421)		9,617		—		(804)
Balance at October 30, 2021	(164)		6,216		(12,179)		6,566		439
Other comprehensive gain (loss) before reclassifications	(2,801)		(16,299)		14,512		(49,446)		(54,034)
Amounts reclassified from AOCI	—		(114)		7,064		—		6,950
Balance at October 29, 2022	$	(2,965)	$	(10,197)	$	9,397	$	(42,880)	$	(46,645)

LEASES (Tables)

12 Months Ended

Oct. 29, 2022

Leases [Abstract]

Leases included in balance sheet

Leases included in the Consolidated Balance Sheets for the fiscal periods indicated were as follows (in thousands):


	Classification	Balance at October 29, 2022		Balance at October 30, 2021
Operating leases:
Operating ROU Assets	Operating right-of-use assets	$	45,108	$	44,285
Operating lease liabilities	Operating lease liabilities and Long-term operating lease liabilities	$	61,317	$	60,196
Finance leases:
Buildings, gross	Equipment, building, furniture and fixtures, net	$	69,247	$	76,123
Less: accumulated depreciation	Equipment, building, furniture and fixtures, net	(26,266)		(24,027)
Buildings, net		$	42,981	$	52,096
Finance lease liabilities	Accrued liabilities and other short-term obligations and other long-term obligations	$	56,934	$	66,203

Components of lease expense

For the periods indicated, the components of lease expense included in the Consolidated Statements of Operations were as follows (in thousands):


		Year Ended		Year Ended		Year Ended
	Classification	October 29, 2022		October 30, 2021		October 31, 2020
Operating lease costs	Operating expense	$	17,966	$	16,602	$	17,544
Finance lease cost:
Amortization of finance ROU asset	Operating expense	4,592		4,773		4,465
Interest on finance lease liabilities	Interest expense	4,601		4,882		4,777
Total finance lease cost		9,193		9,655		9,242
Non-capitalized lease cost	Operating expense	917		1,152		2,976
Variable lease cost(1)	Operating expense	5,898		5,690		5,185

Net lease cost(2)		$	33,974	$	33,099	$	34,947

The weighted average remaining lease terms and weighted average discount rates for operating and finance leases were as follows (in thousands):


Weighted-average remaining lease term in years:	As of October 29, 2022		As of October 30, 2021
Operating leases	3.85		4.06
Finance leases	9.71		10.71
Weighted-average discount rates:
Operating leases	2.97	%	2.49	%
Finance leases	7.56	%	7.56	%

Future minimum lease payments, operating lease

Future minimum lease payments and the present value of minimum lease payments related to operating and finance leases as of October 29, 2022 were as follows (in thousands):


	Operating Leases		Finance Leases		Total
2023	$	20,401	$	7,791	$	28,192
2024	16,795		7,791		24,586
2025	12,387		7,947		20,334
2026	8,879		7,979		16,858
2027	4,435		8,255		12,690
Thereafter	2,245		40,588		42,833
Total lease payments	65,142		80,351		145,493
Less: Imputed interest	(3,825)		(23,417)		(27,242)
Present value of lease liabilities	61,317		56,934		118,251
Less: Current portion of present value of minimum lease payments	18,925		3,758		22,683
Long-term portion of present value of minimum lease payments	$	42,392	$	53,176	$	95,568

Future minimum lease payments, finance lease

Future minimum lease payments and the present value of minimum lease payments related to operating and finance leases as of October 29, 2022 were as follows (in thousands):


	Operating Leases		Finance Leases		Total
2023	$	20,401	$	7,791	$	28,192
2024	16,795		7,791		24,586
2025	12,387		7,947		20,334
2026	8,879		7,979		16,858
2027	4,435		8,255		12,690
Thereafter	2,245		40,588		42,833
Total lease payments	65,142		80,351		145,493
Less: Imputed interest	(3,825)		(23,417)		(27,242)
Present value of lease liabilities	61,317		56,934		118,251
Less: Current portion of present value of minimum lease payments	18,925		3,758		22,683
Long-term portion of present value of minimum lease payments	$	42,392	$	53,176	$	95,568

SHORT-TERM AND LONG-TERM DEBT (Tables)

12 Months Ended

Oct. 29, 2022

Debt Disclosure [Abstract]

Schedule of carrying values and estimated fair values of debt instruments

The net carrying value of the 2025 Term Loan was comprised of the following for the fiscal periods indicated (in thousands):


	October 29, 2022								October 30, 2021
	Principal Balance		Unamortized Discount		Deferred Debt Issuance Costs		Net Carrying Value		Net Carrying Value
2025 Term Loan	$	675,675	$	(928)	$	(1,737)	$	673,010	$	677,285

The net carrying value of the 2030 Notes was comprised of the following for the period indicated (in thousands):


	October 29, 2022
	Principal Balance		Deferred Debt Issuance Costs		Net Carrying Value
2030 Senior Notes 4.00% fixed-rate	$	400,000	$	(4,955)	$	395,045

EARNINGS PER SHARE CALCULATION (Tables)

12 Months Ended

Oct. 29, 2022

Earnings Per Share [Abstract]

Reconciliation of numerator and denominator of Basic and Diluted Earnings Per Share

The following table presents the calculation of Basic and Diluted EPS (in thousands except per share amounts):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Net income	$	152,902	$	500,196	$	361,291
Basic weighted average shares outstanding	151,208		155,279		154,287
Effect of dilutive potential common shares	985		1,464		1,668
Diluted weighted average shares	152,193		156,743		155,955
Basic EPS	$	1.01	$	3.22	$	2.34
Diluted EPS	$	1.00	$	3.19	$	2.32
Antidilutive employee share-based awards, excluded	1,370		110		263

INCOME TAXES (Tables)

12 Months Ended

Oct. 29, 2022

Income Tax Disclosure [Abstract]

Provision (benefit) for income taxes

For the periods indicated, the provision (benefit) for income taxes consists of the following (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Provision (benefit) for income taxes:
Current:
Federal	$	27,479	$	72,603	$	4,363
State	10,289		21,400		13,328
Foreign	19,337		25,021		12,640
Total current	57,105		119,024		30,331
Deferred:
Federal	(30,032)		(21,942)		60,679
State	520		(11,546)		4,607
Foreign	2,010		(122,981)		(947)
Total deferred	(27,502)		(156,469)		64,339
Provision (benefit) for income taxes	$	29,603	$	(37,445)	$	94,670

Income before provision (benefit) for income taxes

For the periods indicated, income before provision (benefit) for income taxes consists of the following (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
United States	$	28,784	$	298,514	$	387,697
Foreign	153,721		164,237		68,264
Total	$	182,505	$	462,751	$	455,961

Tax provision (benefit) reconciles to the amount computed by multiplying income or loss before income taxes by the U.S. federal statutory rate of 35%


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Provision at statutory rate	21.00	%	21.00	%	21.00	%
Intercompany IP Restructuring Transaction	—	%	(25.85)	%	—	%
Base Erosion and Anti-Abuse Tax	—	%	—	%	(1.02)	%
State taxes	2.31	%	3.73	%	2.21	%
Foreign taxes	(1.37)	%	2.76	%	0.51	%
Research and development credit	(23.66)	%	(7.99)	%	(7.74)	%
Non-deductible compensation	5.26	%	1.68	%	1.79	%
Foreign derived intangible income	—	%	(1.82)	%	(2.07)	%
Global intangible low taxed income	1.73	%	—	%	—	%
Foreign Nontaxable interest	(1.90)	%	—	%	—	%
Taxation on foreign inflation	1.41	%	0.16	%	(0.01)	%
Transition tax	—	%	—	%	0.02	%
Rate change	1.27	%	(4.33)	%	3.04	%
Valuation allowance	8.35	%	1.77	%	3.58	%
Other	1.82	%	0.80	%	(0.55)	%
Effective income tax rate	16.22	%	(8.09)	%	20.76	%

Significant components of deferred tax assets and liabilities

The significant components of deferred tax assets are as follows (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021
Deferred tax assets:
Reserves and accrued liabilities	$	76,839	$	69,950
Depreciation and amortization	690,636		677,729
NOL and credit carry forward	154,707		165,087
Other	63,902		47,048
Gross deferred tax assets	986,084		959,814
Valuation allowance	(162,076)		(159,634)
Deferred tax asset, net of valuation allowance	$	824,008	$	800,180

Reconciliation of the beginning and ending amount of unrecognized tax benefits, excluding interest and penalties

A reconciliation of the beginning and ending amount of unrecognized tax benefits, excluding interest and penalties, is as follows (in thousands):


	Amount
Unrecognized tax benefits at November 2, 2019	$	94,604
Increase related to positions taken in prior period	653
Increase related to positions taken in current period	1,151
Reductions related to expiration of statute of limitations	(660)
Unrecognized tax benefits at October 31, 2020	95,748
Decrease related to positions taken in prior period	(22,854)
Reductions related to settlements with taxing authorities	(654)
Increase related to positions taken in current period	5,510
Reductions related to expiration of statute of limitations	(659)
Unrecognized tax benefits at October 30, 2021	77,091
Increase related to positions taken in prior period	4,732
Reductions related to settlements with taxing authorities	(3,229)
Increase related to positions taken in current period	2,959
Reductions related to expiration of statute of limitations	(1,039)
Unrecognized tax benefits at October 29, 2022	$	80,514

Summary of valuation allowance against the gross deferred tax assets

The following table summarizes the activity in Ciena’s valuation allowance against its gross deferred tax assets (in thousands):


Year Ended	Beginning Balance		Additions		Deductions		Ending Balance
October 31, 2020	$	135,978	$	25,749	$	10,300	$	151,427
October 30, 2021	$	151,427	$	17,897	$	9,690	$	159,634
October 29, 2022	$	159,634	$	15,245	$	12,803	$	162,076

SHARE-BASED COMPENSATION EXPENSE (Tables)

12 Months Ended

Oct. 29, 2022

Share-Based Payment Arrangement [Abstract]

Summary of stock option activity

The following table is a summary of Ciena’s stock option activity for the periods indicated (shares in thousands):


	Shares Underlying Options Outstanding	Weighted Average Exercise Price




Balance at October 30, 2021	83	$	32.46
Granted	—	—

Exercised	(46)	$	31.44
Canceled	(5)	$	51.64
Balance at October 29, 2022	32	$	30.98

Summarizes information with respect to stock options outstanding


					Options Outstanding and Vested at
					October 29, 2022
					Number	Weighted Average Remaining	Weighted
Range of					of	Contractual	Average		Aggregate
Exercise					Underlying	Life	Exercise		Intrinsic
Price					Shares	(Years)	Price		Value
$	14.38	—	$	18.22	13	1.56	$	16.02	$	401
$	32.06	—	$	46.30	19	0.43	$	40.67	145
$	14.38	—	$	46.30	32	0.87	$	30.98	$	546

Assumptions for awards granted

Assumptions for awards granted during fiscal 2022, fiscal 2021 and fiscal 2020 included the following:


	Year Ended
	October 29, 2022	October 30, 2021	October 31, 2020
Expected volatility of Ciena common stock, which is a weighted average of implied volatility and historical volatility	38.27%	41.00%	31.77%
Historical volatility of Ciena common stock	42.17%	42.80%	36.29%
Historical volatility of S&P Networking Index	27.22%	27.30%	18.40%
Correlation coefficient	0.7049	0.6800	0.5891
Expected life in years	2.89	2.87	2.87
Risk-free interest rate	0.94%	0.17%	1.65%
Expected dividend yield	0.0%	0.0%	0.0%

Summary of restricted stock unit activity


	Restricted Stock Units Outstanding	Weighted Average Grant Date Fair Value Per Share		Aggregate Fair Value
Balance at October 30, 2021	4,084	$	43.67	$	221,733
Granted	2,361

Vested	(2,030)
Canceled or forfeited	(312)
Balance at October 29, 2022	4,103	$	55.16	$	197,960

Share-based compensation expense

The following table summarizes share-based compensation expense for the periods indicated (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Products	$	3,867	$	3,408	$	3,182
Services	7,533		5,181		3,853
Share-based compensation expense included in cost of goods sold	11,400		8,589		7,035
Research and development	31,879		21,863		16,987
Sales and marketing	31,280		25,152		20,194
General and administrative	30,435		28,804		23,424

Share-based compensation expense included in operating expense	93,594		75,819		60,605
Share-based compensation expense capitalized in inventory, net	137		(72)		118
Total share-based compensation	$	105,131	$	84,336	$	67,758

SEGMENT AND ENTITY WIDE DISCLOSURES (Tables)

12 Months Ended

Oct. 29, 2022

Segment Reporting [Abstract]

Reconciliation of assets from segment to consolidated

As of October 29, 2022, finite-lived intangible assets, goodwill and maintenance spares are assigned to asset groups within the following segments (in thousands):


	October 29, 2022
	Networking Platforms		Platform Software and Services		Blue Planet Automation Software and Services		Global Services		Total
Other intangible assets, net	$	38,163	$	—	$	31,354	$	—	$	69,517
Goodwill	$	83,082	$	156,191	$	89,049	$	—	$	328,322
Maintenance spares, net	$	—	$	—	$	—	$	44,815	$	44,815

Segment profit (loss) and the reconciliation to consolidated net income (loss)

The table below sets forth Ciena’s segment profit (loss) and the reconciliation to consolidated net income for the respective periods indicated (in thousands):


	Year Ended
	October 29, 2022		October 30, 2021		October 31, 2020
Segment profit (loss):
Networking Platforms	$	572,305	$	850,901	$	827,105
Platform Software and Services	175,108		136,602		105,609
Blue Planet Automation Software and Services	(22,388)		(711)		(12,446)
Global Services	210,663		198,521		202,735
Total segment profit	935,688		1,185,313		1,123,003
Less: non-performance operating expenses
Selling and marketing	466,565		452,214		416,425
General and administrative	179,382		181,874		169,548
Significant asset impairments and restructuring costs	33,824		29,565		22,652
Amortization of intangible assets	32,511		23,732		23,383
Acquisition and integration costs	598		2,572		4,031


Add: other non-performance financial items
Interest and other income (loss), net	6,747		(1,768)		964
Interest expense	(47,050)		(30,837)		(31,321)
Loss on extinguishment and modification of debt	—		—		(646)
Less: Provision (benefit) for income taxes	29,603		(37,445)		94,670
Consolidated net income	$	152,902	$	500,196	$	361,291

Ciena's geographic distribution of revenue and long-lived assets

For the periods below, Ciena’s geographic distribution of equipment, building, furniture and fixtures, net, and operating ROU assets was as follows (in thousands):


	October 29, 2022		October 30, 2021
Canada	$	226,451	$	240,968
United States	47,515		50,744
Other International	38,921		37,541
Total	$	312,887	$	329,253

CIENA CORPORATION AND SIGNIFICANT ACCOUNTING POLICIES AND ESTIMATES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021
Significant Accounting Policies [Line Items]
Cost method equity investments	$ 20,698	$ 8,578
Expected economic lives of finite-lived intangible assets (in years)	7 years
Expected number of years Spares usage cost is expensed	4 years
Cumulative amount of temporary differences for unremitted foreign earnings for which a deferred tax liability has not been recognized	$ 477,000
Cumulative amount of temporary differences for unremitted foreign earnings for which a deferred tax liability has not been recognized	$ 33,000
One-time employee termination benefits related to service period (in days)	60 days
Accumulated deficit	$ (3,632,230)	$ (3,785,132)
Minimum
Significant Accounting Policies [Line Items]
Payment terms and cash received	30 days
Maximum
Significant Accounting Policies [Line Items]
Payment terms and cash received	90 days
Foreign exchange contract maturities	24 months
Equipment, furniture and fixtures \| Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives capitalized and amortized straight-line (in years)	3 years
Equipment, furniture and fixtures \| Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives capitalized and amortized straight-line (in years)	5 years
Software and website development \| Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives capitalized and amortized straight-line (in years)	2 years
Software and website development \| Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives capitalized and amortized straight-line (in years)	5 years

REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenue	$ 3,632,661	$ 3,620,684	$ 3,532,157
Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	2,933,692	2,948,208	2,918,108
Products and services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	698,969	672,476	614,049
Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	2,379,931	2,553,509	2,547,647
Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	398,439	271,796	267,416
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	277,191	229,588	197,809
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	76,567	77,247	62,632
Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	292,375	283,350	269,354
Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	157,443	171,489	152,003
Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	50,715	33,705	35,296
Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	2,778,370	2,825,305	2,815,063
Networking Platforms \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	2,778,370	2,825,305	2,815,063
Networking Platforms \| Products and services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Networking Platforms \| Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	2,379,931	2,553,509	2,547,647
Networking Platforms \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Networking Platforms \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Networking Platforms \| Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Networking Platforms \| Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Networking Platforms \| Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Networking Platforms \| Packet Networking
Disaggregation of Revenue [Line Items]
Total revenue	398,439	271,796	267,416
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	277,191	229,588	197,809
Platform Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	85,691	80,359	69,099
Platform Software and Services \| Products and services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	191,500	149,229	128,710
Platform Software and Services \| Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Platform Software and Services \| Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Platform Software and Services \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	277,191	229,588	197,809
Platform Software and Services \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Platform Software and Services \| Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Platform Software and Services \| Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Platform Software and Services \| Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	76,567	77,247	62,632
Blue Planet Automation Software and Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	25,540	27,621	19,583
Blue Planet Automation Software and Services \| Products and services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	51,027	49,626	43,049
Blue Planet Automation Software and Services \| Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Blue Planet Automation Software and Services \| Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Blue Planet Automation Software and Services \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Blue Planet Automation Software and Services \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	76,567	77,247	62,632
Blue Planet Automation Software and Services \| Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Blue Planet Automation Software and Services \| Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Blue Planet Automation Software and Services \| Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Global Services
Disaggregation of Revenue [Line Items]
Total revenue	500,533	488,544	456,653
Global Services \| Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	44,091	14,923	14,363
Global Services \| Products and services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	456,442	473,621	442,290
Global Services \| Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Global Services \| Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Global Services \| Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Global Services \| Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0
Global Services \| Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	292,375	283,350	269,354
Global Services \| Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	157,443	171,489	152,003
Global Services \| Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	$ 50,715	$ 33,705	$ 35,296

REVENUE - Geographical Distribution of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenue	$ 3,632,661	$ 3,620,684	$ 3,532,157
Americas
Disaggregation of Revenue [Line Items]
Total revenue	2,636,840	2,525,619	2,469,278
EMEA
Disaggregation of Revenue [Line Items]
Total revenue	555,215	670,462	591,468
APAC
Disaggregation of Revenue [Line Items]
Total revenue	$ 440,606	$ 424,603	$ 471,411

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 28
-Subparagraph (f)
-URI https://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 280
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

+ Details

REVENUE - Revenue by Major Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Revenue, Major Customer [Line Items]
Total revenue	$ 3,632,661	$ 3,620,684	$ 3,532,157
AT&T \| Revenue \| Customer Concentration Risk
Revenue, Major Customer [Line Items]
Total revenue	433,418	447,403	373,163
Verizon \| Revenue \| Customer Concentration Risk
Revenue, Major Customer [Line Items]
Total revenue	402,787
Total \| Revenue \| Customer Concentration Risk
Revenue, Major Customer [Line Items]
Total revenue	$ 836,205	$ 447,403	$ 373,163

- Definition

+ References

+ Details

REVENUE - Contract Balances (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Revenue from Contract with Customer [Abstract]
Accounts receivable, net	$ 920,772	$ 884,958
Contract assets for unbilled accounts receivable, net	156,039	101,355
Deferred revenue	$ 200,235	$ 175,464

REVENUE - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
REVENUE - Narrative (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Revenue from External Customer [Line Items]
Revenues	$ 3,632,661	$ 3,620,684	$ 3,532,157
Revenue recognized that was previously deferred	111,300	106,500
Capitalized contract acquisition costs	39,700	27,600
Amortization of capitalized contract acquisition costs	27,300	24,600
Remaining performance obligation	2,800,000
United States
Revenue from External Customer [Line Items]
Revenues	$ 2,420,000	$ 2,270,000	$ 2,250,000
Revenue \| Customer Concentration Risk \| Ten Largest Customers
Revenue from External Customer [Line Items]
Concentration risk, percentage	56.30%	55.50%	54.50%

REVENUE - Performance Obligation (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-31	Oct. 29, 2022
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation	91.00%
Period of remaining performance obligation	12 months

CANADIAN EMERGENCY WAGE SUBSIDY - Narrative (Details) $ in Thousands, $ in Millions	12 Months Ended
	Oct. 30, 2021 USD ($)	Oct. 30, 2021 CAD ($)	Oct. 31, 2020 USD ($)	Oct. 31, 2020 CAD ($)
Canadian Emergency Wage Subsidy
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	$ 41,280	$ 52.2
Grants, Canada Emergency Wage Subsidy, 2020 Employee Wages
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit			$ 35,400	$ 43.9

CANADIAN EMERGENCY WAGE SUBSIDY - Schedule of Canadian Emergency Wage Subsidy (Details) - 12 months ended Oct. 30, 2021 - Canadian Emergency Wage Subsidy $ in Thousands, $ in Millions	USD ($)	CAD ($)
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	$ 41,280	$ 52.2
Product
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	4,283
Service
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	2,667
CEWS benefit in cost of goods sold
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	6,950
Research and development
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	29,519
Sales and marketing
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	2,604
General and administrative
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	2,207
CEWS benefit in operating expense
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	$ 34,330

BUSINESS COMBINATIONS - Narrative (Details) - USD ($) $ in Thousands				12 Months Ended
	Mar. 09, 2022	Nov. 01, 2021	Nov. 02, 2019	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Business Acquisition [Line Items]
Acquisition and integration costs				$ 598	$ 2,572	$ 4,031
Vyatta And Xelic
Business Acquisition [Line Items]
Consideration transferred	$ 64,100
Payment to acquire business	63,300
Future payable arrangement	$ 800
Acquisition and integration costs				$ 1,700
Vyatta And Xelic \| Customer relationships and contracts
Business Acquisition [Line Items]
Intangible assets, useful life		2 years
Vyatta And Xelic \| Developed technology
Business Acquisition [Line Items]
Intangible assets, useful life		5 years
Centina Systems, Inc.
Business Acquisition [Line Items]
Payment to acquire business			$ 34,000
Centina Systems, Inc. \| Customer relationships and contracts
Business Acquisition [Line Items]
Intangible assets, useful life			2 years
Centina Systems, Inc. \| Developed technology
Business Acquisition [Line Items]
Intangible assets, useful life			5 years

BUSINESS COMBINATIONS - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Nov. 01, 2021	Oct. 30, 2021	Nov. 02, 2019
Business Acquisition [Line Items]
Goodwill	$ 328,322		$ 311,645
Vyatta And Xelic
Business Acquisition [Line Items]
Cash and cash equivalents		$ 201
Prepaid expenses and other		1,614
Equipment, furniture and fixtures		694
Goodwill		17,698
Accrued liabilities		(4,434)
Total purchase consideration		64,064
Vyatta And Xelic \| Customer relationships and contracts
Business Acquisition [Line Items]
Intangible assets acquired		15,800
Vyatta And Xelic \| Developed technology
Business Acquisition [Line Items]
Intangible assets acquired		$ 32,491
Centina Systems, Inc.
Business Acquisition [Line Items]
Cash and cash equivalents				$ 5,718
Accounts receivable				610
Prepaid expenses and other				536
Equipment, furniture and fixtures				17
Goodwill				13,055
Accounts payable				(47)
Accrued liabilities				(286)
Deferred revenue				(1,493)
Deferred tax liability				(6,692)
Total purchase consideration				34,018
Centina Systems, Inc. \| Customer relationships and contracts
Business Acquisition [Line Items]
Intangible assets acquired				400
Centina Systems, Inc. \| Developed technology
Business Acquisition [Line Items]
Intangible assets acquired				$ 22,200

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Activity and balance of the restructuring liability accounts
Balance at beginning of period	$ 781	$ 2,915	$ 15,143
Charges	29,970	29,565	22,652
Adjustments related to ASC 842			(11,160)
Cash payments	(24,916)	(31,699)	(23,720)
Balance at end of period	5,835	781	2,915
Current restructuring liabilities	5,835
Workforce reduction
Activity and balance of the restructuring liability accounts
Balance at beginning of period	781	2,915	3,983
Charges	3,156	5,938	7,282
Adjustments related to ASC 842			0
Cash payments	(2,722)	(8,072)	(8,350)
Balance at end of period	1,215	781	2,915
Current restructuring liabilities	1,215
Other restructuring activities
Activity and balance of the restructuring liability accounts
Balance at beginning of period	0	0	11,160
Charges	26,814	23,627	15,370
Adjustments related to ASC 842			(11,160)
Cash payments	(22,194)	(23,627)	(15,370)
Balance at end of period	4,620	$ 0	$ 0
Current restructuring liabilities	$ 4,620

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS - Narrative (Details) $ in Millions	Mar. 07, 2022 USD ($)
Restructuring and Related Activities [Abstract]
Asset Impairment Charges	$ 3.8
Provision for Other Credit Losses	$ 1.8

INTEREST AND OTHER INCOME (LOSS), NET (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Other Income and Expenses [Abstract]
Interest income	$ 10,060	$ 2,051	$ 6,860
Gains (losses) on non-hedge designated foreign currency forward contracts	(4,018)	11,172	5,551
Foreign currency exchange gains (losses)	2,501	(14,622)	(13,022)
Unrealized gain on cost method equity investment	4,120	0	2,681
Other	(5,916)	(369)	(1,106)
Interest and other income (loss), net	$ 6,747	$ (1,768)	$ 964

CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS - Schedule of Short-term and Long-term Investments (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 248,751	$ 322,939
Gross Unrealized Gains	1	5
Gross Unrealized Losses	(3,848)	(197)
Estimated Fair Value	244,904	322,747
Cash equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	55,530	71,226
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	55,530	71,226
Short-term investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	156,430	181,488
Gross Unrealized Gains	1	5
Gross Unrealized Losses	(2,442)	(10)
Estimated Fair Value	153,989	181,483
Other Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	36,791	70,225
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,406)	(187)
Estimated Fair Value	35,385	70,038
U.S. government obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	137,963	251,713
Gross Unrealized Gains	0	5
Gross Unrealized Losses	(3,379)	(197)
Estimated Fair Value	134,584	251,521
Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	54,899
Gross Unrealized Gains	1
Gross Unrealized Losses	(405)
Estimated Fair Value	54,495
Time deposits
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	55,889	71,226
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(64)	0
Estimated Fair Value	$ 55,825	$ 71,226

CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS - Legal Maturities of Debt Investments (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Amortized Cost, Less than one year	$ 211,960
Amortized Cost, Due in 1-2 years	36,791
Amortized Cost	248,751	$ 322,939
Estimated Fair Value, Less than one year	209,519
Estimated Fair Value, Due in 1-2 years	35,385
Estimated Fair Value	$ 244,904	$ 322,747

FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurements (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Assets:
Debt securities	$ 244,904	$ 322,747
Corporate Debt Securities
Assets:
Debt securities	54,495
Fair Value, Measurements, Recurring
Assets:
Deferred compensation plan assets	12,751	12,968
Total assets measured at fair value	980,381	1,546,926
Liabilities:
Total liabilities measured at fair value	15,605	16,644
Fair Value, Measurements, Recurring \| Money market funds
Assets:
Cash equivalents	639,024	1,120,851
Fair Value, Measurements, Recurring \| Time deposits
Assets:
Cash equivalents	55,825	71,226
Fair Value, Measurements, Recurring \| Bond mutual fund
Assets:
Debt securities	71,145	75,425
Fair Value, Measurements, Recurring \| U.S. government obligations
Assets:
Debt securities	134,584	251,521
Fair Value, Measurements, Recurring \| Corporate Debt Securities
Assets:
Debt securities	54,495
Level 1 \| Fair Value, Measurements, Recurring
Assets:
Deferred compensation plan assets	12,751	12,968
Total assets measured at fair value	778,745	1,280,470
Liabilities:
Total liabilities measured at fair value	0	0
Level 1 \| Fair Value, Measurements, Recurring \| Money market funds
Assets:
Cash equivalents	639,024	1,120,851
Level 1 \| Fair Value, Measurements, Recurring \| Time deposits
Assets:
Cash equivalents	55,825	71,226
Level 1 \| Fair Value, Measurements, Recurring \| Bond mutual fund
Assets:
Debt securities	71,145	75,425
Level 1 \| Fair Value, Measurements, Recurring \| U.S. government obligations
Assets:
Debt securities	0	0
Level 1 \| Fair Value, Measurements, Recurring \| Corporate Debt Securities
Assets:
Debt securities	0
Level 2 \| Fair Value, Measurements, Recurring
Assets:
Deferred compensation plan assets	0	0
Total assets measured at fair value	201,636	266,456
Liabilities:
Total liabilities measured at fair value	15,605	16,644
Level 2 \| Fair Value, Measurements, Recurring \| Money market funds
Assets:
Cash equivalents	0	0
Level 2 \| Fair Value, Measurements, Recurring \| Time deposits
Assets:
Cash equivalents	0	0
Level 2 \| Fair Value, Measurements, Recurring \| Bond mutual fund
Assets:
Debt securities	0	0
Level 2 \| Fair Value, Measurements, Recurring \| U.S. government obligations
Assets:
Debt securities	134,584	251,521
Level 2 \| Fair Value, Measurements, Recurring \| Corporate Debt Securities
Assets:
Debt securities	54,495
Level 3 \| Fair Value, Measurements, Recurring
Assets:
Deferred compensation plan assets	0	0
Total assets measured at fair value	0	0
Liabilities:
Total liabilities measured at fair value	0	0
Level 3 \| Fair Value, Measurements, Recurring \| Money market funds
Assets:
Cash equivalents	0	0
Level 3 \| Fair Value, Measurements, Recurring \| Time deposits
Assets:
Cash equivalents	0	0
Level 3 \| Fair Value, Measurements, Recurring \| Bond mutual fund
Assets:
Debt securities	0	0
Level 3 \| Fair Value, Measurements, Recurring \| U.S. government obligations
Assets:
Debt securities	0	0
Level 3 \| Fair Value, Measurements, Recurring \| Corporate Debt Securities
Assets:
Debt securities	0
Foreign Currency Forward Contracts \| Fair Value, Measurements, Recurring
Assets:
Foreign currency forward contracts	251	14,935
Liabilities:
Derivative liability	15,605	716
Foreign Currency Forward Contracts \| Level 1 \| Fair Value, Measurements, Recurring
Assets:
Foreign currency forward contracts	0	0
Liabilities:
Derivative liability	0	0
Foreign Currency Forward Contracts \| Level 2 \| Fair Value, Measurements, Recurring
Assets:
Foreign currency forward contracts	251	14,935
Liabilities:
Derivative liability	15,605	716
Foreign Currency Forward Contracts \| Level 3 \| Fair Value, Measurements, Recurring
Assets:
Foreign currency forward contracts	0	0
Liabilities:
Derivative liability	0	0
Forward starting interest rate swaps
Liabilities:
Derivative liability	12,306
Forward starting interest rate swaps \| Fair Value, Measurements, Recurring
Liabilities:
Derivative liability		15,928
Forward starting interest rate swaps \| Level 1
Liabilities:
Derivative liability	0
Forward starting interest rate swaps \| Level 1 \| Fair Value, Measurements, Recurring
Liabilities:
Derivative liability		0
Forward starting interest rate swaps \| Level 2
Liabilities:
Derivative liability	12,306
Forward starting interest rate swaps \| Level 2 \| Fair Value, Measurements, Recurring
Liabilities:
Derivative liability		15,928
Forward starting interest rate swaps \| Level 3
Liabilities:
Derivative liability	$ 0
Forward starting interest rate swaps \| Level 3 \| Fair Value, Measurements, Recurring
Liabilities:
Derivative liability		$ 0

FAIR VALUE MEASUREMENTS - Balance Sheet Items (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Assets:
Total assets measured at fair value	$ 980,381	$ 1,546,926
Liabilities:
Total liabilities measured at fair value	15,605	16,644
Cash equivalents
Assets:
Cash equivalents	765,699	1,267,502
Short-term investments
Assets:
Short-term investments	153,989	181,483
Prepaid expenses and other
Assets:
Other assets	251	14,935
Long-term investments
Assets:
Long-term investments	35,385	70,038
Other long-term assets
Assets:
Other assets	25,057	12,968
Accrued liabilities and other short-term obligations
Liabilities:
Accrued liabilities and other short-term obligations	15,605	716
Other long-term obligations
Liabilities:
Other long-term obligations		15,928
Level 1
Assets:
Total assets measured at fair value	778,745	1,280,470
Liabilities:
Total liabilities measured at fair value	0	0
Level 1 \| Cash equivalents
Assets:
Cash equivalents	757,725	1,267,502
Level 1 \| Short-term investments
Assets:
Short-term investments	8,269	0
Level 1 \| Prepaid expenses and other
Assets:
Other assets	0	0
Level 1 \| Long-term investments
Assets:
Long-term investments	0	0
Level 1 \| Other long-term assets
Assets:
Other assets	12,751	12,968
Level 1 \| Accrued liabilities and other short-term obligations
Liabilities:
Accrued liabilities and other short-term obligations	0	0
Level 1 \| Other long-term obligations
Liabilities:
Other long-term obligations		0
Level 2
Assets:
Total assets measured at fair value	201,636	266,456
Liabilities:
Total liabilities measured at fair value	15,605	16,644
Level 2 \| Cash equivalents
Assets:
Cash equivalents	7,974	0
Level 2 \| Short-term investments
Assets:
Short-term investments	145,720	181,483
Level 2 \| Prepaid expenses and other
Assets:
Other assets	251	14,935
Level 2 \| Long-term investments
Assets:
Long-term investments	35,385	70,038
Level 2 \| Other long-term assets
Assets:
Other assets	12,306	0
Level 2 \| Accrued liabilities and other short-term obligations
Liabilities:
Accrued liabilities and other short-term obligations	15,605	716
Level 2 \| Other long-term obligations
Liabilities:
Other long-term obligations		15,928
Level 3
Assets:
Total assets measured at fair value	0	0
Liabilities:
Total liabilities measured at fair value	0	0
Level 3 \| Cash equivalents
Assets:
Cash equivalents	0	0
Level 3 \| Short-term investments
Assets:
Short-term investments	0	0
Level 3 \| Prepaid expenses and other
Assets:
Other assets	0	0
Level 3 \| Long-term investments
Assets:
Long-term investments	0	0
Level 3 \| Other long-term assets
Assets:
Other assets	0	0
Level 3 \| Accrued liabilities and other short-term obligations
Liabilities:
Accrued liabilities and other short-term obligations	$ 0	0
Level 3 \| Other long-term obligations
Liabilities:
Other long-term obligations		$ 0

ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands			12 Months Ended
ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands	Mar. 07, 2022	Oct. 31, 2020	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			$ 10,912	$ 10,598	$ 20,101
Provision for doubtful accounts			4,199	2,346	8,855
Net Deductions			4,153	4,238	18,358
Balance at end of period		$ 10,598	10,958	10,912	10,598
Interest expense			47,050	30,837	31,321
Factoring Receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Gross amount of trade account receivable sold			11,800
Interest expense			$ 600
Russia
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Provision for doubtful accounts	$ 1,800	12,200
Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period				$ 2,206
Balance at end of period		$ 2,206			$ 2,206
Unidentified Customer One \| Customer Concentration Risk \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage			13.00%	15.00%
Unidentified Customer Two \| Customer Concentration Risk \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage			11.00%	10.00%

INVENTORIES (Details) - USD ($) $ in Thousands	12 Months Ended
INVENTORIES (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Inventories
Raw materials	$ 664,916	$ 175,399
Work-in-process	18,232	10,260
Finished goods	258,584	180,800
Deferred cost of goods sold	41,084	44,765
Inventories before provision	982,816	411,224
Reserve for excess and obsolescence	(36,086)	(36,959)	$ (39,637)
Total inventories	946,730	374,265
Reserve for excess and obsolete inventory [Roll Forward]
Valuation allowance, beginning balance	36,959	39,637	47,322
Provisions	16,184	17,850	24,701
Disposals	17,057	20,528	32,386
Valuation allowance, ending balance	$ 36,086	$ 36,959	$ 39,637

PREPAID EXPENSES AND OTHER (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Capitalized Contract Cost [Line Items]
Prepaid VAT and other taxes	$ 63,975	$ 77,388
Prepaid expenses	55,440	62,189
Product demonstration equipment, net	35,929	29,362
Other non-trade receivables	24,026	18,408
Deferred deployment expense	877	264
Derivative assets	251	14,935
Prepaid expenses and other	370,053	325,654
Depreciation of product demonstration equipment	8,700	9,800	$ 9,000
Contract assets for unbilled accounts receivable, net
Capitalized Contract Cost [Line Items]
Contract assets	156,039	101,355
Capitalized contract acquisition costs
Capitalized Contract Cost [Line Items]
Contract assets	$ 33,516	$ 21,753

EQUIPMENT, BUILDING, FURNITURE AND FIXTURES (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Property, Plant and Equipment, Net [Abstract]
Equipment, building, furniture and fixtures, gross	$ 768,822	$ 776,065
Accumulated depreciation and amortization	(501,043)	(491,097)
Equipment, building, furniture and fixtures, net	267,779	284,968
Equipment, furniture and fixtures
Property, Plant and Equipment, Net [Abstract]
Equipment, building, furniture and fixtures, gross	619,160	599,672
Building subject to finance lease
Property, Plant and Equipment, Net [Abstract]
Equipment, building, furniture and fixtures, gross	69,247	76,123
Leasehold improvements
Property, Plant and Equipment, Net [Abstract]
Equipment, building, furniture and fixtures, gross	80,415	100,270
Equipment, Building, and Furniture and Fixtures
Property, Plant and Equipment, Net [Abstract]
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements	$ 87,200	$ 86,500	$ 84,900

INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Intangible Assets
Gross Intangible	$ 826,904	$ 778,870
Accumulated Amortization	(757,387)	(713,556)
Net Intangible	69,517	65,314
Amortization of intangible assets	44,281	36,033	$ 38,619
Expected future amortization of finite-lived intangible assets
2023	28,828
2024	19,194
2025	13,337
2026	7,191
2027	709
Thereafter	258
Net Intangible	69,517	65,314
Developed technology
Intangible Assets
Gross Intangible	428,218	395,726
Accumulated Amortization	(386,300)	(359,828)
Net Intangible	41,918	35,898
Expected future amortization of finite-lived intangible assets
Net Intangible	41,918	35,898
Patents and licenses
Intangible Assets
Gross Intangible	8,415	7,815
Accumulated Amortization	(4,228)	(3,321)
Net Intangible	4,187	4,494
Expected future amortization of finite-lived intangible assets
Net Intangible	4,187	4,494
Customer relationships, covenants not to compete, outstanding purchase orders and contracts
Intangible Assets
Gross Intangible	390,271	375,329
Accumulated Amortization	(366,859)	(350,407)
Net Intangible	23,412	24,922
Expected future amortization of finite-lived intangible assets
Net Intangible	$ 23,412	$ 24,922

GOODWILL (Details) $ in Thousands	12 Months Ended
GOODWILL (Details) $ in Thousands	Oct. 29, 2022 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 311,645
Acquisitions	17,698
Translation	(1,021)
Goodwill, ending balance	328,322
Platform Software and Services
Goodwill [Roll Forward]
Goodwill, ending balance	156,191
Blue Planet Automation Software and Services
Goodwill [Roll Forward]
Goodwill, ending balance	89,049
Networking Platforms
Goodwill [Roll Forward]
Goodwill, ending balance	83,082
Operating Segments \| Platform Software and Services
Goodwill [Roll Forward]
Goodwill, beginning balance	156,191
Acquisitions	0
Translation	0
Goodwill, ending balance	156,191
Operating Segments \| Blue Planet Automation Software and Services
Goodwill [Roll Forward]
Goodwill, beginning balance	89,049
Acquisitions	0
Translation	0
Goodwill, ending balance	89,049
Operating Segments \| Networking Platforms
Goodwill [Roll Forward]
Goodwill, beginning balance	66,405
Acquisitions	17,698
Translation	(1,021)
Goodwill, ending balance	$ 83,082

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References + Details

OTHER BALANCE SHEET DETAILS - Other Long Term Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021
Other long-term assets
Maintenance spares inventory, net	$ 44,815	$ 55,696
Cost method equity investments	20,698	8,578
Deferred compensation plan assets	$ 12,751	$ 12,968
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total	Total
Forward starting interest rate swaps	$ 12,306	$ 0
Capitalized contract acquisition costs	6,151	5,803
Deferred debt issuance costs, net	781	1,188
Restricted cash	26	58
Other	16,089	15,600
Total	113,617	$ 99,891
Revolving Credit Facility
Other long-term assets
Amortization of debt issuance costs included in interest expense	$ 400

OTHER BALANCE SHEET DETAILS - Accrued Liabilities (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020	Nov. 02, 2019
Accrued liabilities
Compensation, payroll related tax and benefits	$ 126,338	$ 201,119
Warranty	45,503	48,019	$ 49,868	$ 48,498
Vacation	$ 26,396	$ 31,200
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total	Total
Foreign currency forward contracts	$ 15,604	$ 716
Income taxes payable	11,472	13,577
Interest payable	$ 4,793	$ 598
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total	Total
Finance lease liabilities	$ 3,758	$ 3,620
Other	126,918	110,436
Total	$ 360,782	$ 409,285

OTHER BALANCE SHEET DETAILS - Accrued Warranty (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning Balance	$ 48,019	$ 49,868	$ 48,498
Current Year Provisions	17,440	17,093	22,417
Settlements	19,956	18,942	21,047
Ending Balance	$ 45,503	$ 48,019	$ 49,868

OTHER BALANCE SHEET DETAILS - Deferred Revenue (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Disaggregation of Revenue [Line Items]
Total	$ 200,235	$ 175,464
Less current portion	(137,899)	(118,007)
Long-term deferred revenue	62,336	57,457
Products
Disaggregation of Revenue [Line Items]
Total	19,814	12,859
Services
Disaggregation of Revenue [Line Items]
Total	$ 180,421	$ 162,605

OTHER BALANCE SHEET DETAILS - Other Long-Term Obligations (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Balance Sheet Related Disclosures [Abstract]
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term obligations	Other long-term obligations
Finance lease liabilities	$ 53,176	$ 62,583
Interest rate swap liability	0	15,928
Income tax liability	72,644	63,412
Deferred compensation plan liability	12,535	12,877
Other	11,980	12,003
Other long-term obligations	$ 150,335	$ 166,803

DERIVATIVE INSTRUMENTS (Details) - USD ($) $ in Millions	12 Months Ended
DERIVATIVE INSTRUMENTS (Details) - USD ($) $ in Millions	Oct. 29, 2022	Apr. 30, 2022	Oct. 30, 2021
Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contract maturities	24 months
Designated as Hedging Instrument \| Foreign Currency Forward Contracts \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Notional principal of contract	$ 272.2		$ 288.6
Designated as Hedging Instrument \| Foreign Currency Forward Contracts \| Cash Flow Hedging \| Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contract maturities	24 months
Designated as Hedging Instrument \| Forward starting interest rate swaps \| Cash Flow Hedging \| Term Loan 2025 \| Secured Debt
Derivative Instruments, Gain (Loss) [Line Items]
Notional principal of contract	$ 350.0
Fixed interest amount resulting from interest rate swap	2.957%	2.968%
Designated as Hedging Instrument \| Forward starting interest rate swaps \| Cash Flow Hedging \| Term Loan 2025 \| Secured Debt \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Derivative Instruments, Gain (Loss) [Line Items]
Notional principal of contract	$ 350.0	$ 350.0
Not Designated as Hedging Instrument \| Foreign Currency Forward Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional principal of contract	$ 108.0		$ 296.1
Not Designated as Hedging Instrument \| Foreign Currency Forward Contracts \| Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contract maturities	12 months

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 3,020,018	$ 2,509,597	$ 2,172,761
Other comprehensive loss before reclassifications	(54,034)	36,601	(20,474)
Amounts reclassified from AOCI	6,950	(804)	7,200
Ending balance	2,712,861	3,020,018	2,509,597
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	439	(35,358)	(22,084)
Ending balance	(46,645)	439	(35,358)
Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(164)	45	152
Other comprehensive loss before reclassifications	(2,801)	(209)	(107)
Amounts reclassified from AOCI	0	0	0
Ending balance	(2,965)	(164)	45
Unrealized Gain/Losses on Derivative Instruments \| Foreign Currency Forward Contracts
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	6,216	(219)	925
Other comprehensive loss before reclassifications	(16,299)	16,856	(3,891)
Amounts reclassified from AOCI	(114)	(10,421)	2,747
Ending balance	(10,197)	6,216	(219)
Unrealized Gain/Losses on Derivative Instruments \| Forward starting interest rate swaps
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(12,179)	(21,535)	(13,686)
Other comprehensive loss before reclassifications	14,512	(261)	(12,302)
Amounts reclassified from AOCI	7,064	9,617	4,453
Ending balance	9,397	(12,179)	(21,535)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	6,566	(13,649)	(9,475)
Other comprehensive loss before reclassifications	(49,446)	20,215	(4,174)
Amounts reclassified from AOCI	0	0	0
Ending balance	$ (42,880)	$ 6,566	$ (13,649)

LEASES - Narrative (Details) ft² in Millions, $ in Millions	12 Months Ended
LEASES - Narrative (Details) ft² in Millions, $ in Millions	Oct. 29, 2022 USD ($) ft²
Leases [Abstract]
Area leased (in sq ft) \| ft²	1.3
Remaining lease term (up to)	10 years
Extension term (up to)	10 years
Termination period (up to)	4 years
ROU assets that involve subleased or vacant space	$ 7.1
Finance lease buildings, net that involve subleased or vacant space	$ 6.8

LEASES - Leases Included in the Balance Sheet (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Operating leases:
Operating ROU Assets	$ 45,108	$ 44,285
Operating lease liabilities	61,317	60,196
Finance leases:
Buildings, gross	$ 69,247	$ 76,123
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Equipment, building, furniture and fixtures, net	Equipment, building, furniture and fixtures, net
Less: accumulated depreciation	$ (26,266)	$ (24,027)
Buildings, net	42,981	52,096
Finance lease liabilities	56,934
Accrued liabilities and other short-term obligations
Finance leases:
Finance lease liabilities	56,934	66,203
Other long-term obligations
Finance leases:
Finance lease liabilities	$ 56,934	$ 66,203

LEASES - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
LEASES - Lease Cost (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Leases [Abstract]
Operating lease costs	$ 17,966	$ 16,602	$ 17,544
Finance lease cost:
Amortization of finance ROU asset	4,592	4,773	4,465
Interest on finance lease liabilities	4,601	4,882	4,777
Total finance lease cost	9,193	9,655	9,242
Non-capitalized lease cost	917	1,152	2,976
Variable lease cost	5,898	5,690	5,185
Net lease cost	33,974	33,099	34,947
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Amortization	$ 12,800	$ 8,800	$ 11,000

LEASES - Leases Maturity (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Operating Leases
2023	$ 20,401
2024	16,795
2025	12,387
2026	8,879
2027	4,435
Thereafter	2,245
Total lease payments	65,142
Less: Imputed interest	(3,825)
Present value of lease liabilities	61,317	$ 60,196
Less: Current portion of present value of minimum lease payments	(18,925)	(18,632)
Long-term portion of present value of minimum lease payments	42,392	41,564
Finance Leases
2023	7,791
2024	7,791
2025	7,947
2026	7,979
2027	8,255
Thereafter	40,588
Total lease payments	80,351
Less: Imputed interest	(23,417)
Present value of lease liabilities	56,934
Less: Current portion of present value of minimum lease payments	(3,758)	(3,620)
Long-term portion of present value of minimum lease payments	53,176	$ 62,583
Total
2023	28,192
2024	24,586
2025	20,334
2026	16,858
2027	12,690
Thereafter	42,833
Total lease payments	145,493
Less: Imputed interest	(27,242)
Present value of lease liabilities	118,251
Less: Current portion of present value of minimum lease payments	22,683
Long-term portion of present value of minimum lease payments	$ 95,568

LEASES - Weighted Average Remaining Lease Terms and Discount Rates (Details)	Oct. 29, 2022	Oct. 30, 2021
Weighted-average remaining lease term in years:
Operating leases	3 years 10 months 6 days	4 years 21 days
Finance leases	9 years 8 months 15 days	10 years 8 months 15 days
Weighted-average discount rates:
Operating leases	2.97%	2.49%
Finance leases	7.56%	7.56%

SHORT-TERM AND LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 18, 2022	Oct. 29, 2022	Jul. 30, 2022	Oct. 30, 2021	Jan. 23, 2020
Secured Debt \| 2025 Term Loan
Debt Instrument [Line Items]
Principal Balance		$ 675,675			$ 693,000
Derivative, Fixed Interest Rate		5.24%
Deferred debt issuance costs		$ 1,737		$ 2,300
Amortization of debt issuance costs included in interest expense		600
Fair value of debt		668,900
Secured Debt \| 2025 Term Loan \| London Interbank Offered Rate (LIBOR) \| Maximum
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate					1.75%
Secured Debt \| 2025 Term Loan \| London Interbank Offered Rate (LIBOR) \| Minimum
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate					0.00%
Secured Debt \| Senior Notes 4.00% Due 2030
Debt Instrument [Line Items]
Fair value of debt		337,000
Senior Notes \| Senior Notes 4.00% Due 2030
Debt Instrument [Line Items]
Amortization of debt issuance costs included in interest expense		$ 500
Aggregate principal amount	$ 400,000
Fixed-rate	4.00%	4.00%
Proceeds from Issuance of Debt	$ 394,500
Debt Instrument, Event Of Default, Percent Of Principal, Threshold	25.00%
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net			$ 5,000
Senior Notes \| Senior Notes 4.00% Due 2030 \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	102.00%
Senior Notes \| Senior Notes 4.00% Due 2030 \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	104.00%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	40.00%
Senior Notes \| Senior Notes 4.00% Due 2030 \| Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.00%

SHORT-TERM AND LONG-TERM DEBT - Net Carrying Values of Term Loans (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Jan. 18, 2022	Oct. 30, 2021	Jan. 23, 2020
Debt Instrument [Line Items]
Net Carrying Value			$ 677,285
Secured Debt \| 2025 Term Loan
Debt Instrument [Line Items]
Principal Balance	$ 675,675			$ 693,000
Unamortized Discount	(928)
Deferred Debt Issuance Costs	(1,737)		$ (2,300)
Net Carrying Value	673,010
Secured Debt \| 2030 Senior Notes 4.00% Fixed Rate
Debt Instrument [Line Items]
Principal Balance	400,000
Deferred Debt Issuance Costs	(4,955)
Net Carrying Value	$ 395,045
Senior Notes \| Senior Notes 4.00% Due 2030
Debt Instrument [Line Items]
Fixed-rate	4.00%	4.00%

ABL CREDIT FACILITY (Details) $ in Thousands	12 Months Ended
ABL CREDIT FACILITY (Details) $ in Thousands	Oct. 29, 2022 USD ($)
Letter of Credit
Line of Credit Facility [Line Items]
Letters of credit collateralized by the credit facility	$ 85,600
Revolving Credit Facility
Line of Credit Facility [Line Items]
Current borrowing capacity	$ 300,000
Fixed charge coverage ratio	1.0
Percent of borrowing base	10.00%
Threshold amount	$ 15,000
Line of credit outstanding	$ 0

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

EARNINGS PER SHARE CALCULATION - Earnings Per Share Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 152,902	$ 500,196	$ 361,291
Basic weighted average shares outstanding (in shares)	151,208	155,279	154,287
Effect of dilutive potential common shares (in shares)	985	1,464	1,668
Diluted weighted average shares (in shares)	152,193	156,743	155,955
Basic EPS (in dollars per share)	$ 1.01	$ 3.22	$ 2.34
Diluted EPS (in dollars per share)	$ 1.00	$ 3.19	$ 2.32
Antidilutive employee share-based awards, excluded (in shares)	1,370	110	263

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

STOCKHOLDERS’ EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	2 Months Ended	11 Months Ended	12 Months Ended			36 Months Ended
	Feb. 11, 2022	Oct. 29, 2022	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020	Dec. 08, 2021	Dec. 13, 2021	Dec. 09, 2021	Dec. 13, 2018
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock under the stock repurchase program (in shares)		8.4
Stock repurchases		$ 500,000
Repurchase of common stock under the stock repurchase program (in dollars per share)		$ 59.28
Authorized funds under stock repurchase program		$ 500,000	$ 500,000
Shares repurchased for tax withholdings on vesting of restricted stock units			$ 48,454	$ 44,071	$ 32,472
Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program authorized amount								$ 1,000,000	$ 500,000
Repurchase of common stock under the stock repurchase program (in shares)			4.8	1.7	1.9	7.4
Stock repurchases			$ 250,000	$ 92,100	$ 74,500	$ 316,700
Repurchase of common stock under the stock repurchase program (in dollars per share)			$ 51.53	$ 54.27	$ 39.81	$ 42.75
Accelerated Share Repurchase Agreement
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program authorized amount							$ 250,000
Repurchase of common stock under the stock repurchase program (in shares)	3.6
Repurchase of common stock under the stock repurchase program (in dollars per share)	$ 69.78

INCOME TAXES - Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Current:
Federal	$ 27,479	$ 72,603	$ 4,363
State	10,289	21,400	13,328
Foreign	19,337	25,021	12,640
Total current	57,105	119,024	30,331
Deferred:
Federal	(30,032)	(21,942)	60,679
State	520	(11,546)	4,607
Foreign	2,010	(122,981)	(947)
Total deferred	(27,502)	(156,469)	64,339
Provision (benefit) for income taxes	$ 29,603	$ (37,445)	$ 94,670

INCOME TAXES - Income Before Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Income (loss) before provision (benefit) for income taxes:
United States	$ 28,784	$ 298,514	$ 387,697
Foreign	153,721	164,237	68,264
Income before income taxes	$ 182,505	$ 462,751	$ 455,961

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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INCOME TAXES - Effective Income Tax Rate (Details)	12 Months Ended
INCOME TAXES - Effective Income Tax Rate (Details)	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Income tax rate reconciliation:
Provision at statutory rate	21.00%	21.00%	21.00%
Intercompany IP Restructuring Transaction	0.00%	0.00%	(1.02%)
Base Erosion and Anti-Abuse Tax	0.00%	(25.85%)	0.00%
State taxes	2.31%	3.73%	2.21%
Foreign taxes	(1.37%)	2.76%	0.51%
Research and development credit	(23.66%)	(7.99%)	(7.74%)
Non-deductible compensation	5.26%	1.68%	1.79%
Foreign derived intangible income	0.00%	(1.82%)	(2.07%)
Global intangible low taxed income	1.73%	0.00%	0.00%
Foreign Nontaxable interest	(1.90%)	0.00%	0.00%
Taxation on foreign inflation	1.41%	0.16%	(0.01%)
Transition tax	0.00%	0.00%	0.02%
Rate change	1.27%	(4.33%)	3.04%
Valuation allowance	8.35%	1.77%	3.58%
Other	1.82%	0.80%	(0.55%)
Effective income tax rate	16.22%	(8.09%)	20.76%

INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020	Nov. 02, 2019
Income Tax Disclosure [Abstract]
Intra-entity transfer of non-US intellectual property rights, income tax benefit	$ 119,300
Unrecognized tax benefits, interest and penalties accrued	5,200	$ 3,800
Interest and penalties expense (benefit)	1,700	100	$ 900
Cumulative unremitted earnings of non-U.S. affiliates	477,000
Cumulative amount of temporary differences for unremitted foreign earnings for which a deferred tax liability has not been recognized	33,000
Valuation allowance	$ 162,076	$ 159,634	$ 151,427	$ 135,978

INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020	Nov. 02, 2019
Deferred tax assets:
Reserves and accrued liabilities	$ 76,839	$ 69,950
Depreciation and amortization	690,636	677,729
NOL and credit carry forward	154,707	165,087
Other	63,902	47,048
Gross deferred tax assets	986,084	959,814
Valuation allowance	(162,076)	(159,634)	$ (151,427)	$ (135,978)
Deferred tax asset, net of valuation allowance	$ 824,008	$ 800,180

INCOME TAXES - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Reconciliation of the beginning and ending amount of unrecognized tax benefits, excluding interest and penalties
Unrecognized tax benefits, beginning balance	$ 77,091	$ 95,748	$ 94,604
Increase related to positions taken in prior period	4,732		653
Decrease related to positions taken in prior period		(22,854)
Reductions related to settlements with taxing authorities	(3,229)	(654)
Increase related to positions taken in current period	2,959	5,510	1,151
Reductions related to expiration of statute of limitations	(1,039)	(659)	(660)
Unrecognized tax benefits, ending balance	$ 80,514	$ 77,091	$ 95,748

INCOME TAXES - Valuation Allowance of Gross Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Valuation allowance against gross deferred tax assets:
Valuation allowance, beginning balance	$ 159,634	$ 151,427	$ 135,978
Additions	15,245	17,897	25,749
Deductions	12,803	9,690	10,300
Valuation allowance, ending balance	$ 162,076	$ 159,634	$ 151,427

SHARE-BASED COMPENSATION EXPENSE - Narrative (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Oct. 29, 2022 USD ($) period $ / shares shares	Oct. 30, 2021 USD ($) $ / shares shares	Oct. 31, 2020 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted during the period (in shares)	0	0	0
Unrecognized share-based compensation \| $	$ 185.7
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of service-based awards	4 years
Intrinsic value of option exercised \| $	$ 1.6	$ 0.5	$ 1.3
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	4,103,000	4,084,000
Total fair value of restricted stock units vested and converted into common stock \| $	$ 119.0	$ 110.0	$ 83.5
Weighted average fair value of each restricted stock unit granted (in dollars per share) \| $ / shares	$ 67.03	$ 48.70	$ 41.61
Nonvested award compensation cost not yet recognized, period for recognition	1 year 6 months 3 days
Restricted Stock Units (RSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of service-based awards	3 years
Restricted Stock Units (RSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of service-based awards	4 years
Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	300,000	300,000
2017 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum expiration period of incentive awards	10 years
Number of shares authorized (in shares)	21,100,000
Remaining authorized shares available for issuance (in shares)	9,400,000
2017 Omnibus Incentive Plan \| Employee Stock Options and Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum expiration period of incentive awards	10 years
Minimum exercise price, percentage of fair market value on grant date	100.00%
2017 Omnibus Incentive Plan \| Restricted Stock Units (RSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of service-based awards	1 year
Employee Stock Purchase Plan \| Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining authorized shares available for issuance (in shares)	12,200,000
Offer period for ESPP	12 months
Number of purchase periods in offer period \| period	2
Purchase period	6 months
ESPP discount percentage purchase date	85.00%
Shares issued under ESPP (in shares)	700,000	700,000	700,000

SHARE-BASED COMPENSATION EXPENSE - Summary of Stock Option Activity (Details) - $ / shares	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Shares Underlying Options Outstanding
Beginning Balance (in shares)	83,000
Granted (in shares)	0	0	0
Exercised (in shares)	(46,000)
Canceled (in shares)	(5,000)
Ending Balance (in shares)	32,000	83,000
Weighted Average Exercise Price
Beginning Balance (in dollars per share)	$ 32.46
Granted (in dollars per share)	0
Exercised (in dollars per share)	31.44
Canceled (in dollars per share)	51.64
Ending Balance (in dollars per share)	$ 30.98	$ 32.46

SHARE-BASED COMPENSATION EXPENSE - Stock Options Outstanding (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021
Summarizes information with respect to stock options outstanding
Weighted average exercise price, (in dollars per share)	$ 30.98	$ 32.46
Range of Exercise Price Range One
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	14.38
Range of exercise price, upper (in dollars per share)	$ 18.22
Number of underlying shares (in shares)	13
Weighted average remaining contractual life (in years)	1 year 6 months 21 days
Weighted average exercise price, (in dollars per share)	$ 16.02
Aggregate intrinsic value	$ 401
Range of Exercise Price Range Two
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	$ 32.06
Range of exercise price, upper (in dollars per share)	$ 46.30
Number of underlying shares (in shares)	19
Weighted average remaining contractual life (in years)	5 months 4 days
Weighted average exercise price, (in dollars per share)	$ 40.67
Aggregate intrinsic value	$ 145
Range of Exercise Price Range Three
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	$ 14.38
Range of exercise price, upper (in dollars per share)	$ 46.30
Number of underlying shares (in shares)	32
Weighted average remaining contractual life (in years)	10 months 13 days
Weighted average exercise price, (in dollars per share)	$ 30.98
Aggregate intrinsic value	$ 546

SHARE-BASED COMPENSATION EXPENSE - Assumptions for Awards Granted (Details) - Performance Based Awards	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility of Ciena common stock, which is a weighted average of implied volatility and historical volatility	38.27%	41.00%	31.77%
Historical volatility of Ciena common stock	42.17%	42.80%	36.29%
Historical volatility of S&P Networking Index	27.22%	27.30%	18.40%
Correlation coefficient	0.7049	0.6800	0.5891
Expected life in years	2 years 10 months 20 days	2 years 10 months 13 days	2 years 10 months 13 days
Risk-free interest rate	0.94%	0.17%	1.65%
Expected dividend yield	0.00%	0.00%	0.00%

SHARE-BASED COMPENSATION EXPENSE - Restricted Stock Units (Details) - Restricted Stock Units (RSUs) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021
Summary of Restricted Stock Unit Activity
Restricted shares outstanding, Beginning balance (in shares)	4,084
Restricted stock units outstanding, granted (in shares)	2,361
Restricted stock units outstanding, vested (in shares)	(2,030)
Restricted stock units outstanding, canceled or forfeited (in shares)	(312)
Restricted shares outstanding, Ending balance (in shares)	4,103
Weighted average grant date fair value per share (in dollars per share)	$ 55.16	$ 43.67
Aggregate fair value	$ 197,960	$ 221,733

SHARE-BASED COMPENSATION EXPENSE - Components of Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Share-based compensation expense
Share-based compensation expense capitalized in inventory, net	$ 137	$ (72)	$ 118
Total share-based compensation	105,131	84,336	67,758
Share-based compensation expense included in cost of goods sold
Share-based compensation expense
Share-based compensation expense included in operating expense	11,400	8,589	7,035
Products
Share-based compensation expense
Share-based compensation expense included in operating expense	3,867	3,408	3,182
Services
Share-based compensation expense
Share-based compensation expense included in operating expense	7,533	5,181	3,853
Share-based compensation expense included in operating expense
Share-based compensation expense
Share-based compensation expense included in operating expense	93,594	75,819	60,605
Research and development
Share-based compensation expense
Share-based compensation expense included in operating expense	31,879	21,863	16,987
Sales and marketing
Share-based compensation expense
Share-based compensation expense included in operating expense	31,280	25,152	20,194
General and administrative
Share-based compensation expense
Share-based compensation expense included in operating expense	$ 30,435	$ 28,804	$ 23,424

SEGMENT AND ENTITY WIDE DISCLOSURES - Narrative (Details) $ in Thousands	12 Months Ended
	Oct. 29, 2022 USD ($) segment	Oct. 30, 2021 USD ($)
Segment Reporting [Abstract]
Equipment, building, furniture and fixtures, net	$ 267,779	$ 284,968
Operating right-of-use assets	$ 45,108	$ 44,285
Number of operating segments \| segment	4

SEGMENT AND ENTITY WIDE DISCLOSURES - Other Intangibles Assets, Goodwill and Maintenance Spares (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Segment Reporting Information [Line Items]
Other intangible assets, net	$ 69,517	$ 65,314
Goodwill	328,322	311,645
Maintenance spares, net	44,815	$ 55,696
Networking Platforms
Segment Reporting Information [Line Items]
Other intangible assets, net	38,163
Goodwill	83,082
Maintenance spares, net	0
Platform Software and Services
Segment Reporting Information [Line Items]
Other intangible assets, net	0
Goodwill	156,191
Maintenance spares, net	0
Blue Planet Automation Software and Services
Segment Reporting Information [Line Items]
Other intangible assets, net	31,354
Goodwill	89,049
Maintenance spares, net	0
Global Services
Segment Reporting Information [Line Items]
Other intangible assets, net	0
Goodwill	0
Maintenance spares, net	$ 44,815

- Definition

+ References + Details

SEGMENT AND ENTITY WIDE DISCLOSURES - Segment Profit (Loss) and Reconciliation to Consolidated Net Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 31, 2020
Less: non-performance operating expenses
Selling and marketing	$ 466,565	$ 452,214	$ 416,425
General and administrative	179,382	181,874	169,548
Significant asset impairments and restructuring costs	33,824	29,565	22,652
Amortization of intangible assets	32,511	23,732	23,383
Acquisition and integration costs	598	2,572	4,031
Add: other non-performance financial items
Interest and other income (loss), net	6,747	(1,768)	964
Interest expense	(47,050)	(30,837)	(31,321)
Loss on extinguishment and modification of debt	0	0	(646)
Less: Provision (benefit) for income taxes	29,603	(37,445)	94,670
Net income	152,902	500,196	361,291
Operating Segments
Add: other non-performance financial items
Net income	935,688	1,185,313	1,123,003
Operating Segments \| Networking Platforms
Add: other non-performance financial items
Net income	572,305	850,901	827,105
Operating Segments \| Platform Software and Services
Add: other non-performance financial items
Net income	175,108	136,602	105,609
Operating Segments \| Blue Planet Automation Software and Services
Add: other non-performance financial items
Net income	(22,388)	(711)	(12,446)
Operating Segments \| Global Services
Add: other non-performance financial items
Net income	$ 210,663	$ 198,521	$ 202,735

SEGMENT AND ENTITY WIDE DISCLOSURES - Entity Wide Reporting (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Oct. 30, 2021
Ciena's geographic distribution of equipment, furniture and fixtures
Equipment, building, furniture and fixtures, net	$ 312,887	$ 329,253
Canada
Ciena's geographic distribution of equipment, furniture and fixtures
Equipment, building, furniture and fixtures, net	226,451	240,968
United States
Ciena's geographic distribution of equipment, furniture and fixtures
Equipment, building, furniture and fixtures, net	47,515	50,744
Other International
Ciena's geographic distribution of equipment, furniture and fixtures
Equipment, building, furniture and fixtures, net	$ 38,921	$ 37,541

OTHER EMPLOYEE BENEFIT PLANS (Details)	12 Months Ended
OTHER EMPLOYEE BENEFIT PLANS (Details)	Oct. 29, 2022 USD ($)	Oct. 29, 2022 CAD ($)	Oct. 30, 2021 USD ($)	Oct. 30, 2021 CAD ($)	Oct. 31, 2020 USD ($)	Oct. 31, 2020 CAD ($)
Defined Contribution Pension Plan Canada
Defined Contribution Plan Disclosure [Line Items]
Maximum total employee and employer contribution percentage	18.00%	18.00%
Maximum total employee and employer contribution amount	$ 21,305	$ 29,210
Required employer contribution percent	1.00%	1.00%
Employer matching percentage for eligible employee contribution	50.00%	50.00%
Percentage of employee contribution with employer matching contribution	6.00%	6.00%
Employer matching contributions	$ 7,400,000	$ 10,100,000	$ 6,700,000	$ 8,300,000	$ 5,700,000	$ 7,000,000
Defined Contribution Profit Sharing Plan
Defined Contribution Plan Disclosure [Line Items]
Employer matching percentage for eligible employee contribution	50.00%	50.00%
Percentage of employee contribution with employer matching contribution	8.00%	8.00%
Employer matching contributions	$ 9,200,000		$ 8,400,000		$ 7,500,000
Maximum employee contribution percentage of pre-tax compensation	60.00%	60.00%
Employer discretionary contribution amount	$ 0

COMMITMENTS AND CONTINGENCIES (Details) $ in Billions	Oct. 29, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Outstanding purchase order commitment	$ 2.6

SUBSEQUENT EVENTS (Details) $ in Millions	Nov. 22, 2022 USD ($)
Subsequent Event \| Tibit Communications, Inc. \| Forecast
Subsequent Event [Line Items]
Consideration	$ 210