Ciena (CIEN) 10-Q 7 Sep 22 2022 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Jul. 30, 2022	Sep. 02, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jul. 30, 2022
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, par value $0.01 per share
Trading Symbol	CIEN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		148,141,810
Entity Central Index Key	0000936395
Current Fiscal Year End Date	--10-29
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Revenue:
Total revenue	$ 867,981	$ 988,141	$ 2,661,651	$ 2,579,198
Cost of goods sold:
Total cost of goods sold	527,202	513,591	1,534,904	1,334,338
Gross profit	340,779	474,550	1,126,747	1,244,860
Operating expenses:
Research and development	150,025	146,225	457,758	389,212
Selling and marketing	105,880	114,924	344,700	322,589
General and administrative	41,121	48,863	131,191	132,491
Significant asset impairments and restructuring costs	7,692	9,789	20,203	23,865
Amortization of intangible assets	8,919	5,967	26,757	17,896
Acquisition and integration costs	35	259	598	860
Total operating expenses	313,672	326,027	981,207	886,913
Income from operations	27,107	148,523	145,540	357,947
Interest and other income (loss), net	366	795	4,860	(1,600)
Interest expense	(12,642)	(7,776)	(33,275)	(22,921)
Income before income taxes	14,831	141,542	117,125	333,426
Provision (benefit) for income taxes	4,319	(96,690)	21,868	(63,271)
Net income	$ 10,512	$ 238,232	$ 95,257	$ 396,697
Basic net income per common share (in dollars per share)	$ 0.07	$ 1.53	$ 0.63	$ 2.55
Diluted net income per potential common share (in dollars per share)	$ 0.07	$ 1.52	$ 0.62	$ 2.53
Weighted average basic common shares outstanding (in shares)	149,862	155,271	152,083	155,277
Weighted average dilutive potential common shares outstanding (in shares)	150,463	156,744	153,209	156,742
Products
Revenue:
Total revenue	$ 684,284	$ 804,414	$ 2,109,239	$ 2,071,677
Cost of goods sold:
Total cost of goods sold	434,756	420,236	1,259,378	1,074,935
Services
Revenue:
Total revenue	183,697	183,727	552,412	507,521
Cost of goods sold:
Total cost of goods sold	$ 92,446	$ 93,355	$ 275,526	$ 259,403

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Net income	$ 10,512	$ 238,232	$ 95,257	$ 396,697
Change in unrealized loss on available-for-sale securities, net of tax	(79)	(21)	(2,184)	(28)
Change in cumulative translation adjustments	(4,037)	(6,823)	(22,783)	19,439
Other comprehensive gain (loss)	(5,820)	(9,990)	(22,318)	30,728
Total comprehensive income	4,692	228,242	72,939	427,425
Change in unrealized gain (loss) on foreign currency forward contracts, net of tax
Change in unrealized gain (loss) on cash flow hedges, net of tax	(91)	(4,766)	(6,776)	5,667
Change in unrealized gain (loss) on forward starting interest rate swaps, net of tax
Change in unrealized gain (loss) on cash flow hedges, net of tax	$ (1,613)	$ 1,620	$ 9,425	$ 5,650

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Current assets:
Cash and cash equivalents	$ 859,687	$ 1,422,546
Short-term investments	321,823	181,483
Accounts receivable, net of allowance for credit losses of $11.7 million and $10.9 million as of July 30, 2022 and October 30, 2021, respectively.	802,484	884,958
Inventories, net	826,673	374,265
Prepaid expenses and other	377,709	325,654
Total current assets	3,188,376	3,188,906
Long-term investments	77,723	70,038
Equipment, building, furniture and fixtures, net	281,690	284,968
Operating right-of-use assets	45,452	44,285
Goodwill	328,978	311,645
Other intangible assets, net	76,918	65,314
Deferred tax asset, net	797,924	800,180
Other long-term assets	103,721	99,891
Total assets	4,900,782	4,865,227
Current liabilities:
Accounts payable	439,229	356,176
Accrued liabilities and other short-term obligations	301,589	409,285
Deferred revenue	147,808	118,007
Operating lease liabilities	19,786	18,632
Current portion of long-term debt	6,930	6,930
Total current liabilities	915,342	909,030
Long-term deferred revenue	61,845	57,457
Other long-term obligations	150,767	166,803
Long-term operating lease liabilities	42,639	41,564
Long-term debt, net	1,062,453	670,355
Total liabilities	2,233,046	1,845,209
Commitments and contingencies (Note 22)
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; 148,293,357 and 154,858,981 shares issued and outstanding	1,483	1,549
Additional paid-in capital	6,378,007	6,803,162
Accumulated other comprehensive income (loss)	(21,879)	439
Accumulated deficit	(3,689,875)	(3,785,132)
Total stockholders’ equity	2,667,736	3,020,018
Total liabilities and stockholders’ equity	$ 4,900,782	$ 4,865,227

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jul. 30, 2022	Oct. 30, 2021
Current assets:
Allowance for credit losses	$ 11.7	$ 10.9
Stockholders’ equity:
Preferred stock, par value per share (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 per share (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)	148,293,357	154,858,981
Common stock, shares outstanding (in shares)	148,293,357	154,858,981

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021
Cash flows provided by (used in) operating activities:
Net income	$ 95,257	$ 396,697
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of equipment, building, furniture and fixtures, and amortization of leasehold improvements	68,280	71,918
Share-based compensation costs	77,827	62,970
Amortization of intangible assets	36,521	27,341
Deferred taxes	(19,824)	(139,543)
Provision for inventory excess and obsolescence	12,038	13,460
Provision for warranty	12,416	12,726
Other	(442)	6,350
Changes in assets and liabilities:
Accounts receivable	74,478	(163,149)
Inventories	(464,664)	(38,821)
Prepaid expenses and other	(39,805)	(17,272)
Operating lease right-of-use assets	12,504	12,340
Accounts payable, accruals and other obligations	(37,587)	31,388
Deferred revenue	34,949	24,969
Short- and long-term operating lease liabilities	(15,197)	(14,618)
Net cash provided by (used in) operating activities	(153,249)	286,756
Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(66,908)	(67,290)
Purchase of available-for-sale securities	(614,333)	(132,895)
Proceeds from maturities of available-for-sale securities	460,000	122,063
Settlement of foreign currency forward contracts, net	4,450	7,326
Purchase of cost method equity investments	(8,000)	0
Proceeds from sale of cost method equity investments	0	4,678
Acquisition of business, net of cash acquired	(62,043)	0
Net cash used in investing activities	(286,834)	(66,118)
Cash flows used in financing activities:
Proceeds from issuance of senior notes	400,000	0
Payment of long-term debt	(3,465)	(5,197)
Payment of debt issuance costs	(5,159)	0
Payment of finance lease obligations	(2,555)	(2,243)
Shares repurchased for tax withholdings on vesting of stock unit awards	(41,280)	(36,484)
Repurchases of common stock - repurchase program	(487,792)	(64,555)
Proceeds from issuance of common stock	30,224	28,289
Net cash used in financing activities	(110,027)	(80,190)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(12,780)	1,344
Net increase (decrease) in cash, cash equivalents and restricted cash	(562,890)	141,792
Cash, cash equivalents and restricted cash at beginning of period	1,422,604	1,088,708
Cash, cash equivalents and restricted cash at end of period	859,714	1,230,500
Supplemental disclosure of cash flow information
Cash paid during the period for interest	24,823	22,392
Cash paid during the period for income taxes, net	28,593	46,165
Operating lease payments	16,342	16,162
Non-cash investing and financing activities
Purchase of equipment in accounts payable	9,320	5,517
Repurchase of common stock in accrued liabilities from repurchase program	5,000	800
Operating right-of-use assets subject to lease liability	$ 8,226	$ 4,182

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Effect of adoption of new accounting standard	Common Stock	Additional Paid-in-Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Accumulated Deficit Effect of adoption of new accounting standard
Beginning balance (in shares) at Oct. 31, 2020			154,563,005
Equity - beginning 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]
Net income	396,697					396,697
Other comprehensive (loss) income	30,728				30,728
Repurchase of common stock - repurchase program (in shares)			(1,203,439)
Repurchase of common stock - repurchase program	(65,355)		$ (12)	(65,343)
Issuance of shares from employee equity plans (in shares)			2,430,224
Issuance of shares from employee equity plans	28,289		$ 24	28,265
Share-based compensation expense	62,970			62,970
Shares repurchased for tax withholdings on vesting of stock unit awards (in shares)			(686,475)
Shares repurchased for tax withholdings on vesting of stock unit awards	(36,484)		$ (7)	(36,477)
Ending balance (in shares) at Jul. 31, 2021			155,103,315
Equity- ending balance at Jul. 31, 2021	$ 2,924,236		$ 1,551	6,815,946	(4,630)	(3,888,631)
Beginning balance (in shares) at Oct. 30, 2021	154,858,981		154,858,981
Equity - beginning 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	95,257					95,257
Other comprehensive (loss) income	(22,318)				(22,318)
Repurchase of common stock - repurchase program (in shares)			(8,279,710)
Repurchase of common stock - repurchase program	(491,992)		$ (83)	(491,909)
Issuance of shares from employee equity plans (in shares)			2,359,326
Issuance of shares from employee equity plans	30,224		$ 23	30,201
Share-based compensation expense	77,827			77,827
Shares repurchased for tax withholdings on vesting of stock unit awards (in shares)			(645,240)
Shares repurchased for tax withholdings on vesting of stock unit awards	$ (41,280)		$ (6)	(41,274)
Ending balance (in shares) at Jul. 30, 2022	148,293,357		148,293,357
Equity- ending balance at Jul. 30, 2022	$ 2,667,736		$ 1,483	$ 6,378,007	$ (21,879)	$ (3,689,875)

INTERIM FINANCIAL STATEMENTS

INTERIM FINANCIAL STATEMENTS	9 Months Ended
	Jul. 30, 2022
Quarterly Financial Data [Abstract]
INTERIM FINANCIAL STATEMENTS	INTERIM FINANCIAL STATEMENTS The interim financial statements included herein for Ciena Corporation and its wholly owned subsidiaries (“Ciena”) have been prepared by Ciena, without audit, pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”). The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires Ciena to make judgments, assumptions, and estimates that affect the amounts reported in the Condensed Consolidated Financial Statements and accompanying notes. The inputs into certain of Ciena’s judgments, assumptions, and estimates reflect, among other things, the information available to Ciena regarding the economic implications of the COVID-19 pandemic, and expectations as to its impact on Ciena’s business. Among other things, these estimates form the basis for judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ materially from these estimates under different assumptions or conditions. To the extent that there are material differences between Ciena’s estimates and actual results, Ciena’s consolidated financial statements will be affected. In addition, because the duration and severity of COVID-19 pandemic are uncertain, certain of these estimates could require further judgment or modification and therefore carry a higher degree of variability and volatility. As events continue to evolve, Ciena’s estimates may change materially in future periods. In the opinion of management, the financial statements included in this report reflect all normal recurring adjustments that Ciena considers necessary for the fair statement of the results of operations of Ciena for the interim periods covered and of the financial position of Ciena at the date of the interim balance sheets. Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to SEC rules and regulations. The Condensed Consolidated Balance Sheet as of October 30, 2021 was derived from audited financial statements, but does not include all disclosures required by GAAP. However, Ciena believes that the disclosures are adequate to understand the information presented herein. The operating results for interim periods are not necessarily indicative of the operating results for the entire year. These financial statements should be read in conjunction with Ciena’s audited consolidated financial statements and the notes thereto included in Ciena’s annual report on Form 10-K for fiscal 2021 (the “2021 Annual Report”).

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
	Jul. 30, 2022
Accounting Policies [Abstract]
SIGNIFICANT ACCOUNTING POLICIES	SIGNIFICANT ACCOUNTING POLICIES Except for the changes in certain policies described below, there have been no material changes to Ciena’s significant accounting policies, compared to the accounting policies described in Note 1 above, Ciena Corporation and Significant Accounting Policies and Estimates, in Notes to Consolidated Financial Statements in Item 8 of Part II of the 2021 Annual Report. Newly Issued Accounting Standards - Effective In December 2019, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update 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. ASU 2019-12 was effective for Ciena beginning in the first quarter of fiscal 2022. Ciena adopted ASU 2019-12 beginning in the first quarter of fiscal 2022 without any material impact on its financial position and results of operations. 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 was effective for annual periods beginning after December 15, 2021. Early adoption was permitted. Ciena adopted ASU 2021-10 in the first quarter of fiscal 2022 without any material impact on its financial position and results of operations. 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 No. 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 may be applied prospectively through December 31, 2022. Ciena adopted Topic 848 beginning in the first quarter of fiscal 2022 without any material impact on its financial position and results of operations. 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 ASU on its condensed consolidated financial statements and related disclosures.

REVENUE

REVENUE	9 Months Ended
	Jul. 30, 2022
Revenue from Contract with Customer [Abstract]
REVENUE	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 across Ciena’s product lines, resulting in different economic risk profiles for each line. The tables below set forth Ciena’s disaggregated revenue for the respective periods (in thousands): Quarter Ended July 30, 2022 Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Product lines: Converged Packet Optical $ 563,837 $ — $ — $ — $ 563,837 Routing and Switching 100,741 — — — 100,741 Platform Software and Services — 63,483 — — 63,483 Blue Planet Automation Software and Services — — 17,342 — 17,342 Maintenance Support and Training — — — 72,760 72,760 Installation and Deployment — — — 38,704 38,704 Consulting and Network Design — — — 11,114 11,114 Total revenue by product line $ 664,578 $ 63,483 $ 17,342 $ 122,578 $ 867,981 Timing of revenue recognition: Products and services at a point in time $ 664,578 $ 15,230 $ 4,632 $ 9,408 $ 693,848 Services transferred over time — 48,253 12,710 113,170 174,133 Total revenue by timing of revenue recognition $ 664,578 $ 63,483 $ 17,342 $ 122,578 $ 867,981 Quarter Ended July 31, 2021 Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Product lines: Converged Packet Optical $ 712,906 $ — $ — $ — $ 712,906 Routing and Switching 69,698 — — — 69,698 Platform Software and Services — 56,945 — — 56,945 Blue Planet Automation Software and Services — — 16,607 — 16,607 Maintenance Support and Training — — — 74,006 74,006 Installation and Deployment — — — 46,653 46,653 Consulting and Network Design — — — 11,326 11,326 Total revenue by product line $ 782,604 $ 56,945 $ 16,607 $ 131,985 $ 988,141 Timing of revenue recognition: Products and services at a point in time $ 782,604 $ 17,928 $ 4,558 $ 6,508 $ 811,598 Services transferred over time — 39,017 12,049 125,477 176,543 Total revenue by timing of revenue recognition $ 782,604 $ 56,945 $ 16,607 $ 131,985 $ 988,141 Nine Months Ended July 30, 2022 Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Product lines: Converged Packet Optical $ 1,730,066 $ — $ — $ — $ 1,730,066 Routing and Switching 295,638 — — — 295,638 Platform Software and Services — 205,557 — — 205,557 Blue Planet Automation Software and Services — — 55,334 — 55,334 Maintenance Support and Training — — — 219,270 219,270 Installation and Deployment — — — 120,504 120,504 Consulting and Network Design — — — 35,282 35,282 Total revenue by product line $ 2,025,704 $ 205,557 $ 55,334 $ 375,056 $ 2,661,651 Timing of revenue recognition: Products and services at a point in time $ 2,025,704 $ 66,655 $ 17,442 $ 31,368 $ 2,141,169 Services transferred over time — 138,902 37,892 343,688 520,482 Total revenue by timing of revenue recognition $ 2,025,704 $ 205,557 $ 55,334 $ 375,056 $ 2,661,651 Nine Months Ended July 31, 2021 Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Product lines: Converged Packet Optical $ 1,798,888 $ — $ — $ — $ 1,798,888 Routing and Switching 197,632 — — — 197,632 Platform Software and Services — 163,472 — — 163,472 Blue Planet Automation Software and Services — — 57,499 — 57,499 Maintenance Support and Training — — — 212,054 212,054 Installation and Deployment — — — 124,263 124,263 Consulting and Network Design — — — 25,390 25,390 Total revenue by product line $ 1,996,520 $ 163,472 $ 57,499 $ 361,707 $ 2,579,198 Timing of revenue recognition: Products and services at a point in time $ 1,996,520 $ 54,756 $ 20,497 $ 9,776 $ 2,081,549 Services transferred over time — 108,716 37,002 351,931 497,649 Total revenue by timing of revenue recognition $ 1,996,520 $ 163,472 $ 57,499 $ 361,707 $ 2,579,198 Ciena reports its sales geographically using the following markets: (i) Americas; (ii) Europe, Middle East and Africa (“EMEA”); and (iii) Asia Pacific, Japan and India (“APAC”). Americas includes activities in North America and South America. 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 based principally 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): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Geographic distribution: Americas $ 617,366 $ 692,853 $ 1,913,350 $ 1,776,939 EMEA 124,185 189,180 420,075 499,652 APAC 126,430 106,108 328,226 302,607 Total revenue by geographic distribution $ 867,981 $ 988,141 $ 2,661,651 $ 2,579,198 Ciena’s revenue includes $574.3 million and $623.9 million of United States revenue for the third quarter of fiscal 2022 and 2021, respectively. For th e nine months ended July 30, 2022 and July 31, 2021 , United States revenue was $1.8 billion and $1.6 billion, respectively. No other country accounted for 10% or more of total revenue for the periods presented above. For the periods below, customers accounting for at least 10% of Ciena’s revenue were as follows (in thousands): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Verizon $ 108,495 $ 131,892 $ 273,158 n/a AT&T 100,293 119,199 314,358 313,140 Web-scale provider n/a 119,728 n/a n/a Total $ 208,788 $ 370,819 $ 587,516 $ 313,140 _____________________________ n/a Denotes revenue representing less than 10% of total revenue for the periods presented The Web-scale provider noted in the above table purchased products from each of Ciena’s operating segments excluding Blue Planet ® Automation Software and Services. The other customers identified above purchased products and services from each of Ciena’s operating segments for each of the periods presented. • 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 ® stackable 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 also includes the Z-Series Packet-Optical Platform and Optical Microsystems products. • 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 IP networking 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 Condensed 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 provides analytics, data, and planning tools to assist customers in managing Ciena’s Networking Platforms products in their networks. Ciena’s platform software includes its Manage, Control and Plan (MCP) domain controller solution 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 described above. Revenue from the software portion of this segment is included in product revenue on the Condensed Consolidated Statements of Operations. Revenue from services portions of this segment is included in services revenue on the Condensed Consolidated Statements of Operations. • Blue Planet ® Automation Software and Services is a comprehensive, micro-services, standards-based open software suite, together with related services, that enables customers to implement large-scale software and IT-led operations support system (OSS) transformations by transforming legacy networks into “service ready” networks, accelerating the creation, delivery and lifecycle management of new, cloud-based services. 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 Condensed Consolidated Statements of Operations. Revenue from services portions of this segment is included in services revenue on the Condensed 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 in which 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 Condensed Consolidated Statements of Operations. Ciena’s Global Services are considered a distinct performance obligation for which 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 also 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 July 30, 2022 Balance at October 30, 2021 Accounts receivable, net $ 802,484 $ 884,958 Contract assets for unbilled accounts receivable, net $ 157,448 $ 101,355 Deferred revenue $ 209,653 $ 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 Condensed Consolidated Balance Sheets. See Note 12 below. Contract liabilities consist of deferred revenue and represent advanced payments against non-cancelable customer orders received prior to revenue recognition. Ciena recognized approximately $98.9 million and $94.7 million of revenue during the first nine months of fiscal 2022 and 2021, respectively, that was included in the deferred revenue balance as of October 30, 2021 and October 31, 2020, respectively. Revenue recognized due to changes in transaction price from performance obligations satisfied or partially satisfied in previous periods was immaterial during the nine months ended July 30, 2022 and July 31, 2021. Capitalized Contract Acquisition Costs Capitalized contract acquisition costs consist of deferred sales commissions, and were $36.1 million and $27.6 million as of July 30, 2022 and October 30, 2021, respectively. Capitalized contract acquisition costs were included in (i) prepaid expenses and other and (ii) other long-term assets. The amortization expense associated with these costs was $20.5 million and $16.8 million during the first nine months of fiscal 2022 and 2021, respectively, and was included in selling and marketing expense on the Condensed Consolidated Statement 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 July 30, 2022, the aggregate amount of RPO was $2.9 billion. As of July 30, 2022, Ciena expects approximately 91% of the RPO to be recognized as revenue within the next 12 months .

BUSINESS COMBINATIONS

BUSINESS COMBINATIONS	9 Months Ended
	Jul. 30, 2022
Business Combination and Asset Acquisition [Abstract]
BUSINESS COMBINATIONS	BUSINESS COMBINATIONS Vyatta and Xelic Acquisitions 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 3 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 $64.3 million, of which $63.5 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 Condensed Consolidated Statement 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 17,982 Accrued liabilities (4,434) Total purchase consideration $ 64,348 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 Condensed Consolidated Statement of Operations for the reporting period are immaterial.

CANADIAN EMERGENCY WAGE SUBSIDY

CANADIAN EMERGENCY WAGE SUBSIDY	9 Months Ended
	Jul. 30, 2022
Unusual or Infrequent Items, or Both [Abstract]
CANADIAN EMERGENCY WAGE SUBSIDY	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 Condensed Consolidated Statement of Operations to which the grant activity relates. During the nine months ended July 31, 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 ($35.2 million) related to employee wages during fiscal 2020. The following table summarizes CEWS for the periods indicated (in thousands, U.S. Dollar): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Product $ — $ 94 $ — $ 4,283 Service — 47 — 2,667 CEWS benefit in cost of goods sold — 141 — 6,950 Research and development — 596 — 29,519 Sales and marketing — 53 — 2,604 General and administrative — 46 — 2,207 CEWS benefit in operating expense — 695 — 34,330 Total CEWS benefit $ — $ 836 $ — $ 41,280

SIGNIFICANT ASSET IMPAIRMENT AN

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS	9 Months Ended
	Jul. 30, 2022
Restructuring and Related Activities [Abstract]
SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS	SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS Restructuring Costs Ciena has undertaken a number of restructuring activities intended to reduce expense and to 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 the Condensed Consolidated Balance Sheets, for the nine months ended July 30, 2022 (in thousands): Workforce Other restructuring activities Total Balance at October 30, 2021 $ 781 $ — $ 781 Charges 2,224 (1) 13,992 (2) 16,216 Cash payments (2,423) (13,115) (15,538) Balance at July 30, 2022 $ 582 $ 877 $ 1,459 Current restructuring liabilities $ 582 $ 877 $ 1,459 (1) Reflects employee costs associated with workforce reductions during the nine months ended July 30, 2022 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. 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 the Condensed Consolidated Balance Sheets for the nine months ended July 31, 2021 (in thousands): Workforce Other restructuring activities Total Balance at October 30, 2020 $ 2,915 $ — $ 2,915 Charges 5,306 (1) 18,558 (2) 23,864 Cash payments (7,051) (18,558) (25,609) Balance at July 31, 2021 $ 1,170 $ — $ 1,170 Current restructuring liabilities $ 1,170 $ — $ 1,170 (1) Reflects employee costs associated with workforce reductions during the nine months ended July 31, 2021 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. 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 $4.1 million of which $2.0 million was a provision for credit losses.

INTEREST AND OTHER INCOME (LOSS

INTEREST AND OTHER INCOME (LOSS), NET	9 Months Ended
	Jul. 30, 2022
Other Income and Expenses [Abstract]
INTEREST AND OTHER INCOME (LOSS), NET	INTEREST AND OTHER INCOME (LOSS), NETThe components of interest and other income (loss), net, are as follows for the periods indicated (in thousands): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Interest income $ 2,774 $ 465 $ 4,962 $ 1,553 Gains (losses) on non-hedge designated foreign currency forward contracts (985) (4,414) (2,911) 5,295 Foreign currency exchange gains (losses) (788) 4,959 2,711 (8,534) Unrealized gain on cost method equity investment — — 4,120 — Other (635) (215) (4,022) 86 Interest and other income (loss), net $ 366 $ 795 $ 4,860 $ (1,600) 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 local currencies as their functional currencies . Ciena recorded $2.7 million in foreign currency exchange rate gains for the first nine months of fiscal 2022 and during the first nine months of fiscal 2021, Ciena recorded $8.5 million in foreign currency exchange rate losses, both a s a result of monetary assets and liabilities that were transacted in a currency other than Ciena’s functional currency. The related remeasurement adjustments were recorded in interest and other income (loss), net, on the Condensed Consolidated Statements of Operations. From time to time, Ciena uses foreign currency forwards to hedge this type of balance sheet exposure. These forwards 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 Condensed Consolidated Statements of Operations. During the first nine months of fiscal 2022, Ciena recorded losses of $2.9 million and during the first nine months of fiscal 2021, Ciena recorded gains of $5.3 million from non-hedge designated foreign currency forward contracts. During the first nine months of fiscal 2022, Ciena recorded an unrealized gain of $4.1 million on its cost method equity investment.

INCOME TAXES

INCOME TAXES	9 Months Ended
	Jul. 30, 2022
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The effective tax rate for the quarter and nine months ended July 30, 2022 was higher than the effective tax rate for the quarter and nine months ended July 31, 2021, primarily due to the tax benefit associated with recording a deferred tax asset in the third quarter of fiscal 2021. To accommodate the requirements of a global business, Ciena is reorganizing its global supply chain and distribution structure, which has included a legal entity reorganization and related system upgrade. During the third quarter of fiscal 2021, 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 $124.2 million deferred tax asset with a corresponding tax benefit. The impact of this transfer is reflected in Ciena’s effective tax rate for the quarter and nine months ended July 31, 2021, which had a significant, one-time impact on its net income for these periods. Ciena’s 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 ability to utilize tax attributes and changes in tax laws and business reorganizations. Ciena continues to monitor these items and will adopt strategies to address their impact as appropriate. In certain jurisdictions, Ciena provides a valuation allowance for its deferred tax assets in excess of deferred tax liabilities because Ciena has concluded that it is more likely than not that such deferred tax assets will ultimately not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income (including the reversals of deferred tax liabilities) during the periods in which those deferred tax assets will become deductible. Ciena assesses available positive and negative evidence regarding its ability to realize deferred tax assets and record a valuation allowance when it is more likely than not that deferred tax assets will not be realized. To form a conclusion, management considers its recent financial results and trends and makes judgments and estimates related to projections of profitability, the timing and extent of the use of net operating loss carryforwards, and tax planning strategies. Ciena will continue to evaluate future financial performance to determine whether such profitability is both sustainable and significant enough to provide sufficient evidence to support reversal of all or a portion of the valuation allowance. Any future release of valuation allowance may be recorded as a tax benefit increasing net income or as an adjustment to paid-in capital, based on tax ordering requirements.

CASH EQUIVALENT, SHORT-TERM AND

CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS	9 Months Ended
	Jul. 30, 2022
Investments, Debt and Equity Securities [Abstract]
CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS	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): July 30, 2022 Amortized Cost Gross Unrealized Gross Unrealized Estimated Fair U.S. government obligations $ 361,659 $ 11 $ (2,945) $ 358,725 Corporate debt securities 33,969 5 (100) 33,874 Time deposits 121,913 1 (26) 121,888 $ 517,541 $ 17 $ (3,071) $ 514,487 Included in cash equivalents $ 114,941 $ — $ — $ 114,941 Included in short-term investments 322,820 14 (1,011) 321,823 Included in long-term investments 79,780 3 (2,060) 77,723 $ 517,541 $ 17 $ (3,071) $ 514,487 October 30, 2021 Amortized Cost Gross Unrealized Gross Unrealized Estimated Fair 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 final legal maturities of debt investments as of July 30, 2022 (in thousands): Amortized Estimated Less than one year $ 437,761 $ 436,764 Due in 1-2 years 79,780 77,723 $ 517,541 $ 514,487

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	9 Months Ended
	Jul. 30, 2022
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS As of each date indicated, the following table summarizes the assets and liabilities that are recorded at fair value on a recurring basis (in thousands): July 30, 2022 Level 1 Level 2 Level 3 Total Assets: Money market funds $ 531,686 $ — $ — $ 531,686 Bond mutual fund 70,717 — — 70,717 Time deposits 121,888 — — 121,888 Deferred compensation plan assets 13,184 — — 13,184 U.S. government obligations — 358,725 — 358,725 Corporate debt securities — 33,874 — 33,874 Foreign currency forward contracts — 3,024 — 3,024 Forward starting interest rate swaps — 759 — 759 Total assets measured at fair value $ 737,475 $ 396,382 $ — $ 1,133,857 Liabilities: Foreign currency forward contracts $ — $ 3,399 $ — $ 3,399 Forward starting interest rate swaps — 4,337 — 4,337 Total liabilities measured at fair value $ — $ 7,736 $ — $ 7,736 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 each date indicated, the assets and liabilities above are presented on Ciena’s Condensed Consolidated Balance Sheets as follows (in thousands): July 30, 2022 Level 1 Level 2 Level 3 Total Assets: Cash equivalents $ 717,344 $ — $ — $ 717,344 Short-term investments 6,947 314,876 — 321,823 Prepaid expenses and other — 3,024 — 3,024 Long-term investments — 77,723 — 77,723 Other long-term assets 13,184 759 — 13,943 Total assets measured at fair value $ 737,475 $ 396,382 $ — $ 1,133,857 Liabilities: Accrued liabilities and other short-term obligations $ — $ 3,399 $ — $ 3,399 Other long-term obligations — 4,337 — 4,337 Total liabilities measured at fair value $ — $ 7,736 $ — $ 7,736 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.

INVENTORIES

INVENTORIES	9 Months Ended
	Jul. 30, 2022
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES As of the dates indicated, inventories are comprised of the following (in thousands): July 30, October 30, Raw materials $ 621,849 $ 175,399 Work-in-process 19,462 10,260 Finished goods 187,008 180,800 Deferred cost of goods sold 33,800 44,765 Gross inventories 862,119 411,224 Reserve for inventory excess and obsolescence (35,446) (36,959) Inventories, net $ 826,673 $ 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 writes down its inventory for estimated obsolescence

PREPAID EXPENSES AND OTHER

PREPAID EXPENSES AND OTHER	9 Months Ended
	Jul. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
PREPAID EXPENSES AND OTHER	PREPAID EXPENSES AND OTHER As of the dates indicated, prepaid expenses and other are comprised of the following (in thousands): July 30, October 30, Contract assets for unbilled accounts receivable, net $ 157,448 $ 101,355 Prepaid VAT and other taxes 71,140 77,388 Prepaid expenses 64,498 62,189 Product demonstration equipment, net 35,722 29,362 Capitalized contract acquisition costs 30,425 21,753 Other non-trade receivables 14,878 18,408 Derivative assets 3,024 14,935 Deferred deployment expense 574 264 $ 377,709 $ 325,654 Depreciation of product demonstration equipment was $6.8 million during the first nine months of fiscal 2022 and $7.6 million during the first nine months of fiscal 2021. For further discussion on contract assets and capitalized contract acquisition costs, see Note 3 above.

INTANGIBLE ASSETS

INTANGIBLE ASSETS	9 Months Ended
	Jul. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
INTANGIBLE ASSETS	INTANGIBLE ASSETS As of the dates indicated, intangible assets are comprised of the following (in thousands): July 30, 2022 October 30, 2021 Gross Accumulated Net Gross Accumulated Net Developed technology $ 428,218 $ (382,090) $ 46,128 $ 395,726 $ (359,828) $ 35,898 Patents and licenses 7,815 (3,991) 3,824 7,815 (3,321) 4,494 Customer relationships, covenants not to compete, outstanding purchase orders and contracts 390,822 (363,856) 26,966 375,329 (350,407) 24,922 Total intangible assets $ 826,855 $ (749,937) $ 76,918 $ 778,870 $ (713,556) $ 65,314 The aggregate amortization expense of intangible assets was $36.5 million during the first nine months of fiscal 2022 and $27.3 million during the first nine months of fiscal 2021. Expected future amortization of intangible assets for the fiscal years indicated is as follows (in thousands): Fiscal Year Amount 2022 (remaining three months) $ 7,757 2023 28,821 2024 19,187 2025 13,323 2026 7,105 Thereafter 725 $ 76,918

OTHER BALANCE SHEET DETAILS

OTHER BALANCE SHEET DETAILS	9 Months Ended
	Jul. 30, 2022
Balance Sheet Related Disclosures [Abstract]
OTHER BALANCE SHEET DETAILS	OTHER BALANCE SHEET DETAILS As of the dates indicated, accrued liabilities and other short-term obligations are comprised of the following (in thousands): July 30, October 30, Compensation, payroll related tax and benefits (1) $ 98,174 $ 201,119 Warranty 45,689 48,019 Vacation 27,721 31,200 Interest payable 9,386 598 Income taxes payable 4,830 13,577 Finance lease liabilities 3,923 3,620 Foreign currency forward contracts 3,399 716 Other 108,467 110,436 $ 301,589 $ 409,285 (1) Reduction is primarily due to bonus payments to employees under Ciena’s 2021 annual cash incentive compensation plan in the first quarter of fiscal 2022, and 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 periods indicated (in thousands): Beginning Balance Current Period Provisions Settlements Ending Balance Nine Months Ended July 31, 2021 $ 49,868 12,726 (14,455) $ 48,139 Nine Months Ended July 30, 2022 $ 48,019 12,416 (14,746) $ 45,689 As of the dates indicated, deferred revenue is comprised of the following (in thousands): July 30, October 30, Products $ 27,432 $ 12,859 Services 182,221 162,605 Total deferred revenue 209,653 175,464 Less current portion (147,808) (118,007) Long-term deferred revenue $ 61,845 $ 57,457

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS	9 Months Ended
	Jul. 30, 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 enters into foreign currency contracts. Ciena does not enter into such contracts for speculative purposes. As of July 30, 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 $238.8 million and $288.6 million as of July 30, 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 July 30, 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 $111.7 million and $296.1 million as of July 30, 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 16 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 for $350.0 million of the 2025 Term Loan (as defined in Note 16 below) at 2.957% through September 2023. The total notional amount of interest rate swaps in effect was $350.0 million as of July 30, 2022 and October 30, 2021. 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 16 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 July 30, 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 amounts 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 Note 7 and Note 10 above.

SHORT-TERM AND LONG-TERM DEBT

SHORT-TERM AND LONG-TERM DEBT	9 Months Ended
	Jul. 30, 2022
Debt Disclosure [Abstract]
SHORT-TERM AND LONG-TERM DEBT	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 net carrying value of the 2025 Term Loan was comprised of the following for the periods indicated (in thousands): July 30, 2022 October 30, 2021 Principal Balance Unamortized Discount Deferred Debt Issuance Costs Net Carrying Value Net Carrying Value 2025 Term Loan $ 677,407 $ (1,008) $ (1,887) $ 674,512 $ 677,285 Deferred debt issuance costs that were deducted from the carrying amounts of the 2025 Term Loan totaled $1.9 million as of July 30, 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, 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 $0.5 million during the first nine months of each of 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 July 30, 2022, the estimated fair value of the 2025 Term Loan was $674.1 million. The 2025 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 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 Ciena’s senior secured asset-based revolving credit facility (the “ABL Credit Facility”). The net proceeds from the sale of the 2030 Notes, after deducting costs, were approximately $395.5 million. Ciena intends to use the net proceeds from the Offering for general corporate purposes. 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 redemption price equal to 102% of the principal amount of the notes to be redeemed, plus 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): July 30, 2022 Principal Balance Deferred Debt Issuance Costs Net Carrying Value 2030 Senior Notes 4.00% fixed-rate $ 400,000 $ (5,129) $ 394,871 Deferred debt issuance costs that were deducted from the carrying amount of the 2030 Notes totaled $5.1 million as of July 30, 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 $0.4 million during the first nine months of fiscal 2022. As of July 30, 2022, the estimated fair value of the 2030 Notes was $368.0 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.

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME	9 Months Ended
	Jul. 30, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME	ACCUMULATED OTHER COMPREHENSIVE INCOME The following table summarizes the changes in accumulated balances of other comprehensive income (“AOCI”), net of tax, for the nine months ended July 30, 2022 (in thousands): Unrealized Gain (Loss) on Cumulative Available-for-sale Securities Foreign Currency Forward Contracts Forward Starting Interest Rate Swaps Foreign Currency Total Balance at October 30, 2021 $ (164) $ 6,216 $ (12,179) $ 6,566 $ 439 Other comprehensive gain (loss) before reclassifications (2,184) (5,207) 2,786 (22,783) (27,388) Amounts reclassified from AOCI — (1,569) 6,639 — 5,070 Balance at July 30, 2022 $ (2,348) $ (560) $ (2,754) $ (16,217) $ (21,879) The following table summarizes the changes in AOCI, net of tax, for the nine months ended July 31, 2021 (in thousands): Unrealized Gain (Loss) on Cumulative Available-for-sale Securities Foreign Currency Forward Contracts Forward Starting Interest Rate Swaps Foreign Currency Total Balance at October 31, 2020 $ 45 $ (219) $ (21,535) $ (13,649) $ (35,358) Other comprehensive gain (loss) before reclassifications (28) 13,574 (1,399) 19,439 31,586 Amounts reclassified from AOCI — (7,907) 7,049 — (858) Balance at July 31, 2021 $ 17 $ 5,448 $ (15,885) $ 5,790 $ (4,630) 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 Condensed 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 Condensed Consolidated Statements of Operations.

EARNINGS_PER SHARE CALCULATION

EARNINGS PER SHARE CALCULATION	9 Months Ended
	Jul. 30, 2022
Earnings Per Share [Abstract]
EARNINGS PER SHARE CALCULATION	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 that 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): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Net income $ 10,512 $ 238,232 $ 95,257 $ 396,697 Basic weighted average shares outstanding 149,862 155,271 152,083 155,277 Effect of dilutive potential common shares 601 1,473 1,126 1,465 Diluted weighted average shares 150,463 156,744 153,209 156,742 Basic EPS $ 0.07 $ 1.53 $ 0.63 $ 2.55 Diluted EPS $ 0.07 $ 1.52 $ 0.62 $ 2.53 Antidilutive employee share-based awards, excluded 1,640 131 1,264 99

STOCKHOLDERS_ EQUITY

STOCKHOLDERS’ EQUITY	9 Months Ended
	Jul. 30, 2022
Equity [Abstract]
STOCKHOLDERS’ EQUITY	STOCKHOLDERS’ EQUITYStock Repurchase Program and Accelerated Share Repurchase Agreement On December 9, 2021, Ciena announced that its Board of Directors authorized 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 the first nine months of fiscal 2022 , Ciena repurchased an additional 4.7 million shares of its common stock, for an aggregate purchase price of $242.0 million at an average price of $51.50 per share. As of July 30, 2022, Ciena has repurchased an aggregate of 8.3 million shares for an aggregate purchase price of $492.0 million at an average price of $59.42 per share and has an aggregate of $508.0 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 Stock Unit Award Tax Withholdings Ciena repurchases shares of its common stock to satisfy employee tax withholding obligations due on vesting of stock unit awards. The related purchase price of $41.3 million for the shares of Ciena’s stock repurchased during the first nine months of 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.

SHARE-BASED COMPENSATION EXPENS

SHARE-BASED COMPENSATION EXPENSE	9 Months Ended
	Jul. 30, 2022
Share-Based Payment Arrangement [Abstract]
SHARE-BASED COMPENSATION EXPENSE	SHARE-BASED COMPENSATION EXPENSE The following table summarizes share-based compensation expense for the periods indicated (in thousands): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Products $ 1,002 $ 1,037 $ 2,960 $ 2,488 Services 1,940 1,315 5,467 3,941 Share-based compensation expense included in cost of goods sold 2,942 2,352 8,427 6,429 Research and development 8,233 5,541 23,372 16,179 Selling and marketing 8,075 6,534 23,196 18,960 General and administrative 7,579 8,237 22,825 21,338 Share-based compensation expense included in operating expense 23,887 20,312 69,393 56,477 Share-based compensation expense capitalized in inventory, net 28 (193) 7 64 Total share-based compensation expense $ 26,857 $ 22,471 $ 77,827 $ 62,970 As of July 30, 2022, total unrecognized share-based compensation expense was approximately $201.3 million, which relates to unvested stock unit awards and is expected to be recognized over a weighted-average period of 1.57 years.

SEGMENTS AND ENTITY-WIDE DISCLO

SEGMENTS AND ENTITY-WIDE DISCLOSURES	9 Months Ended
	Jul. 30, 2022
Segment Reporting [Abstract]
SEGMENTS AND ENTITY-WIDE DISCLOSURES	SEGMENTS 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, right-of-use (“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 July 30, 2022, equipment, building, furniture and fixtures, net, totaled $281.7 million, and operating ROU assets totaled $45.5 million both of which support asset groups within Ciena’s four operating segments and unallocated selling and general and administrative activities. As of July 30, 2022, finite-lived intangible assets, goodwill and maintenance spares are assigned to asset groups within the following segments (in thousands): Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Other intangible assets, net $ 41,434 $ — $ 35,484 $ — $ 76,918 Goodwill $ 83,738 $ 156,191 $ 89,049 $ — $ 328,978 Maintenance spares, net $ — $ — $ — $ 45,853 $ 45,853 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; and provision (benefit) for income taxes. The table below sets forth Ciena’s segment profit (loss) and the reconciliation to net income for the periods indicated (in thousands): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Segment profit (loss): Networking Platforms $ 108,282 $ 244,535 $ 395,176 $ 612,378 Platform Software and Services 39,646 31,526 132,698 95,692 Blue Planet Automation Software and Services (10,139) (3,243) (17,693) 11 Global Services 52,965 55,507 158,808 147,567 Total segment profit 190,754 328,325 668,989 855,648 Less: Non-performance operating expenses Selling and marketing 105,880 114,924 344,700 322,589 General and administrative 41,121 48,863 131,191 132,491 Significant asset impairments and restructuring costs 7,692 9,789 20,203 23,865 Amortization of intangible assets 8,919 5,967 26,757 17,896 Acquisition and integration costs 35 259 598 860 Add: Other non-performance financial items Interest expense and other income (loss), net (12,276) (6,981) (28,415) (24,521) Less: Provision (benefit) for income taxes 4,319 (96,690) 21,868 (63,271) Net income $ 10,512 $ 238,232 $ 95,257 $ 396,697 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): July 30, October 30, Canada $ 238,288 $ 240,968 United States 51,333 50,744 Other International 37,521 37,541 Total $ 327,142 $ 329,253

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Jul. 30, 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.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	9 Months Ended
	Jul. 30, 2022
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS Stock Repurchase Program From the end of the third quarter of fiscal 2022 through September 2, 2022, Ciena repurchased an additional 154,247 shares of its common stock, for an aggregate purchase price of $8.0 million at an average price of $51.91 per share, inclusive of repurchases pending settlement. As of September 2, 2022, Ciena has repurchased an aggregate of 8,433,957 shares and has $500.0 million of authorized funds remaining under its stock repurchase program.

SIGNIFICANT ACCOUNTING POLICI_2

SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
	Jul. 30, 2022
Accounting Policies [Abstract]
Newly Issued Accounting Standards - Effective and Not Yet Effective	Newly Issued Accounting Standards - Effective In December 2019, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update 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. ASU 2019-12 was effective for Ciena beginning in the first quarter of fiscal 2022. Ciena adopted ASU 2019-12 beginning in the first quarter of fiscal 2022 without any material impact on its financial position and results of operations. 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 was effective for annual periods beginning after December 15, 2021. Early adoption was permitted. Ciena adopted ASU 2021-10 in the first quarter of fiscal 2022 without any material impact on its financial position and results of operations. 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 No. 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 may be applied prospectively through December 31, 2022. Ciena adopted Topic 848 beginning in the first quarter of fiscal 2022 without any material impact on its financial position and results of operations. 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 ASU on its condensed consolidated financial statements and related disclosures.

REVENUE (Tables)

REVENUE (Tables)	9 Months Ended
	Jul. 30, 2022
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The tables below set forth Ciena’s disaggregated revenue for the respective periods (in thousands): Quarter Ended July 30, 2022 Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Product lines: Converged Packet Optical $ 563,837 $ — $ — $ — $ 563,837 Routing and Switching 100,741 — — — 100,741 Platform Software and Services — 63,483 — — 63,483 Blue Planet Automation Software and Services — — 17,342 — 17,342 Maintenance Support and Training — — — 72,760 72,760 Installation and Deployment — — — 38,704 38,704 Consulting and Network Design — — — 11,114 11,114 Total revenue by product line $ 664,578 $ 63,483 $ 17,342 $ 122,578 $ 867,981 Timing of revenue recognition: Products and services at a point in time $ 664,578 $ 15,230 $ 4,632 $ 9,408 $ 693,848 Services transferred over time — 48,253 12,710 113,170 174,133 Total revenue by timing of revenue recognition $ 664,578 $ 63,483 $ 17,342 $ 122,578 $ 867,981 Quarter Ended July 31, 2021 Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Product lines: Converged Packet Optical $ 712,906 $ — $ — $ — $ 712,906 Routing and Switching 69,698 — — — 69,698 Platform Software and Services — 56,945 — — 56,945 Blue Planet Automation Software and Services — — 16,607 — 16,607 Maintenance Support and Training — — — 74,006 74,006 Installation and Deployment — — — 46,653 46,653 Consulting and Network Design — — — 11,326 11,326 Total revenue by product line $ 782,604 $ 56,945 $ 16,607 $ 131,985 $ 988,141 Timing of revenue recognition: Products and services at a point in time $ 782,604 $ 17,928 $ 4,558 $ 6,508 $ 811,598 Services transferred over time — 39,017 12,049 125,477 176,543 Total revenue by timing of revenue recognition $ 782,604 $ 56,945 $ 16,607 $ 131,985 $ 988,141 Nine Months Ended July 30, 2022 Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Product lines: Converged Packet Optical $ 1,730,066 $ — $ — $ — $ 1,730,066 Routing and Switching 295,638 — — — 295,638 Platform Software and Services — 205,557 — — 205,557 Blue Planet Automation Software and Services — — 55,334 — 55,334 Maintenance Support and Training — — — 219,270 219,270 Installation and Deployment — — — 120,504 120,504 Consulting and Network Design — — — 35,282 35,282 Total revenue by product line $ 2,025,704 $ 205,557 $ 55,334 $ 375,056 $ 2,661,651 Timing of revenue recognition: Products and services at a point in time $ 2,025,704 $ 66,655 $ 17,442 $ 31,368 $ 2,141,169 Services transferred over time — 138,902 37,892 343,688 520,482 Total revenue by timing of revenue recognition $ 2,025,704 $ 205,557 $ 55,334 $ 375,056 $ 2,661,651 Nine Months Ended July 31, 2021 Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Product lines: Converged Packet Optical $ 1,798,888 $ — $ — $ — $ 1,798,888 Routing and Switching 197,632 — — — 197,632 Platform Software and Services — 163,472 — — 163,472 Blue Planet Automation Software and Services — — 57,499 — 57,499 Maintenance Support and Training — — — 212,054 212,054 Installation and Deployment — — — 124,263 124,263 Consulting and Network Design — — — 25,390 25,390 Total revenue by product line $ 1,996,520 $ 163,472 $ 57,499 $ 361,707 $ 2,579,198 Timing of revenue recognition: Products and services at a point in time $ 1,996,520 $ 54,756 $ 20,497 $ 9,776 $ 2,081,549 Services transferred over time — 108,716 37,002 351,931 497,649 Total revenue by timing of revenue recognition $ 1,996,520 $ 163,472 $ 57,499 $ 361,707 $ 2,579,198 For the periods below, Ciena’s geographic distribution of revenue was as follows (in thousands): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Geographic distribution: Americas $ 617,366 $ 692,853 $ 1,913,350 $ 1,776,939 EMEA 124,185 189,180 420,075 499,652 APAC 126,430 106,108 328,226 302,607 Total revenue by geographic distribution $ 867,981 $ 988,141 $ 2,661,651 $ 2,579,198 For the periods below, customers accounting for at least 10% of Ciena’s revenue were as follows (in thousands): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Verizon $ 108,495 $ 131,892 $ 273,158 n/a AT&T 100,293 119,199 314,358 313,140 Web-scale provider n/a 119,728 n/a n/a Total $ 208,788 $ 370,819 $ 587,516 $ 313,140 _____________________________ n/a Denotes revenue representing less than 10% of total revenue for the periods presented
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 July 30, 2022 Balance at October 30, 2021 Accounts receivable, net $ 802,484 $ 884,958 Contract assets for unbilled accounts receivable, net $ 157,448 $ 101,355 Deferred revenue $ 209,653 $ 175,464 As of the dates indicated, deferred revenue is comprised of the following (in thousands): July 30, October 30, Products $ 27,432 $ 12,859 Services 182,221 162,605 Total deferred revenue 209,653 175,464 Less current portion (147,808) (118,007) Long-term deferred revenue $ 61,845 $ 57,457

BUSINESS COMBINATIONS (Tables)

BUSINESS COMBINATIONS (Tables)	9 Months Ended
	Jul. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	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 17,982 Accrued liabilities (4,434) Total purchase consideration $ 64,348

CANADIAN EMERGENCY WAGE SUBSI_2

CANADIAN EMERGENCY WAGE SUBSIDY (Tables)	9 Months Ended
	Jul. 30, 2022
Unusual or Infrequent Items, or Both [Abstract]
Schedule of Canadian Emergency Wage Subsidy	The following table summarizes CEWS for the periods indicated (in thousands, U.S. Dollar): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Product $ — $ 94 $ — $ 4,283 Service — 47 — 2,667 CEWS benefit in cost of goods sold — 141 — 6,950 Research and development — 596 — 29,519 Sales and marketing — 53 — 2,604 General and administrative — 46 — 2,207 CEWS benefit in operating expense — 695 — 34,330 Total CEWS benefit $ — $ 836 $ — $ 41,280

SIGNIFICANT ASSET IMPAIRMENT _2

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS (Tables)	9 Months Ended
	Jul. 30, 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 the Condensed Consolidated Balance Sheets, for the nine months ended July 30, 2022 (in thousands): Workforce Other restructuring activities Total Balance at October 30, 2021 $ 781 $ — $ 781 Charges 2,224 (1) 13,992 (2) 16,216 Cash payments (2,423) (13,115) (15,538) Balance at July 30, 2022 $ 582 $ 877 $ 1,459 Current restructuring liabilities $ 582 $ 877 $ 1,459 (1) Reflects employee costs associated with workforce reductions during the nine months ended July 30, 2022 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. 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 the Condensed Consolidated Balance Sheets for the nine months ended July 31, 2021 (in thousands): Workforce Other restructuring activities Total Balance at October 30, 2020 $ 2,915 $ — $ 2,915 Charges 5,306 (1) 18,558 (2) 23,864 Cash payments (7,051) (18,558) (25,609) Balance at July 31, 2021 $ 1,170 $ — $ 1,170 Current restructuring liabilities $ 1,170 $ — $ 1,170 (1) Reflects employee costs associated with workforce reductions during the nine months ended July 31, 2021 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.

INTEREST AND OTHER INCOME (LO_2

INTEREST AND OTHER INCOME (LOSS), NET (Tables)	9 Months Ended
	Jul. 30, 2022
Other Income and Expenses [Abstract]
Interest and Other Income (Loss), Net	The components of interest and other income (loss), net, are as follows for the periods indicated (in thousands): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Interest income $ 2,774 $ 465 $ 4,962 $ 1,553 Gains (losses) on non-hedge designated foreign currency forward contracts (985) (4,414) (2,911) 5,295 Foreign currency exchange gains (losses) (788) 4,959 2,711 (8,534) Unrealized gain on cost method equity investment — — 4,120 — Other (635) (215) (4,022) 86 Interest and other income (loss), net $ 366 $ 795 $ 4,860 $ (1,600)

CASH EQUIVALENT, SHORT-TERM A_2

CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS (Tables)	9 Months Ended
	Jul. 30, 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): July 30, 2022 Amortized Cost Gross Unrealized Gross Unrealized Estimated Fair U.S. government obligations $ 361,659 $ 11 $ (2,945) $ 358,725 Corporate debt securities 33,969 5 (100) 33,874 Time deposits 121,913 1 (26) 121,888 $ 517,541 $ 17 $ (3,071) $ 514,487 Included in cash equivalents $ 114,941 $ — $ — $ 114,941 Included in short-term investments 322,820 14 (1,011) 321,823 Included in long-term investments 79,780 3 (2,060) 77,723 $ 517,541 $ 17 $ (3,071) $ 514,487 October 30, 2021 Amortized Cost Gross Unrealized Gross Unrealized Estimated Fair 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 final legal maturities of debt investments as of July 30, 2022 (in thousands): Amortized Estimated Less than one year $ 437,761 $ 436,764 Due in 1-2 years 79,780 77,723 $ 517,541 $ 514,487

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	9 Months Ended
	Jul. 30, 2022
Fair Value Disclosures [Abstract]
Schedule of the Fair Value of Assets and Liabilities Recorded on a Recurring Basis	As of each date indicated, the following table summarizes the assets and liabilities that are recorded at fair value on a recurring basis (in thousands): July 30, 2022 Level 1 Level 2 Level 3 Total Assets: Money market funds $ 531,686 $ — $ — $ 531,686 Bond mutual fund 70,717 — — 70,717 Time deposits 121,888 — — 121,888 Deferred compensation plan assets 13,184 — — 13,184 U.S. government obligations — 358,725 — 358,725 Corporate debt securities — 33,874 — 33,874 Foreign currency forward contracts — 3,024 — 3,024 Forward starting interest rate swaps — 759 — 759 Total assets measured at fair value $ 737,475 $ 396,382 $ — $ 1,133,857 Liabilities: Foreign currency forward contracts $ — $ 3,399 $ — $ 3,399 Forward starting interest rate swaps — 4,337 — 4,337 Total liabilities measured at fair value $ — $ 7,736 $ — $ 7,736 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 as Presented on Ciena's Condensed Consolidated Balance Sheets	As of each date indicated, the assets and liabilities above are presented on Ciena’s Condensed Consolidated Balance Sheets as follows (in thousands): July 30, 2022 Level 1 Level 2 Level 3 Total Assets: Cash equivalents $ 717,344 $ — $ — $ 717,344 Short-term investments 6,947 314,876 — 321,823 Prepaid expenses and other — 3,024 — 3,024 Long-term investments — 77,723 — 77,723 Other long-term assets 13,184 759 — 13,943 Total assets measured at fair value $ 737,475 $ 396,382 $ — $ 1,133,857 Liabilities: Accrued liabilities and other short-term obligations $ — $ 3,399 $ — $ 3,399 Other long-term obligations — 4,337 — 4,337 Total liabilities measured at fair value $ — $ 7,736 $ — $ 7,736 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

INVENTORIES (Tables)

INVENTORIES (Tables)	9 Months Ended
	Jul. 30, 2022
Inventory Disclosure [Abstract]
Schedule of Inventories	As of the dates indicated, inventories are comprised of the following (in thousands): July 30, October 30, Raw materials $ 621,849 $ 175,399 Work-in-process 19,462 10,260 Finished goods 187,008 180,800 Deferred cost of goods sold 33,800 44,765 Gross inventories 862,119 411,224 Reserve for inventory excess and obsolescence (35,446) (36,959) Inventories, net $ 826,673 $ 374,265

PREPAID EXPENSES AND OTHER (Tab

PREPAID EXPENSES AND OTHER (Tables)	9 Months Ended
	Jul. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Prepaid Expenses and Other	As of the dates indicated, prepaid expenses and other are comprised of the following (in thousands): July 30, October 30, Contract assets for unbilled accounts receivable, net $ 157,448 $ 101,355 Prepaid VAT and other taxes 71,140 77,388 Prepaid expenses 64,498 62,189 Product demonstration equipment, net 35,722 29,362 Capitalized contract acquisition costs 30,425 21,753 Other non-trade receivables 14,878 18,408 Derivative assets 3,024 14,935 Deferred deployment expense 574 264 $ 377,709 $ 325,654

INTANGIBLE ASSETS (Tables)

INTANGIBLE ASSETS (Tables)	9 Months Ended
	Jul. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	As of the dates indicated, intangible assets are comprised of the following (in thousands): July 30, 2022 October 30, 2021 Gross Accumulated Net Gross Accumulated Net Developed technology $ 428,218 $ (382,090) $ 46,128 $ 395,726 $ (359,828) $ 35,898 Patents and licenses 7,815 (3,991) 3,824 7,815 (3,321) 4,494 Customer relationships, covenants not to compete, outstanding purchase orders and contracts 390,822 (363,856) 26,966 375,329 (350,407) 24,922 Total intangible assets $ 826,855 $ (749,937) $ 76,918 $ 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 2022 (remaining three months) $ 7,757 2023 28,821 2024 19,187 2025 13,323 2026 7,105 Thereafter 725 $ 76,918

OTHER BALANCE SHEET DETAILS (Ta

OTHER BALANCE SHEET DETAILS (Tables)	9 Months Ended
	Jul. 30, 2022
Balance Sheet Related Disclosures [Abstract]
Schedule of Accrued Liabilities	As of the dates indicated, accrued liabilities and other short-term obligations are comprised of the following (in thousands): July 30, October 30, Compensation, payroll related tax and benefits (1) $ 98,174 $ 201,119 Warranty 45,689 48,019 Vacation 27,721 31,200 Interest payable 9,386 598 Income taxes payable 4,830 13,577 Finance lease liabilities 3,923 3,620 Foreign currency forward contracts 3,399 716 Other 108,467 110,436 $ 301,589 $ 409,285 (1) Reduction is primarily due to bonus payments to employees under Ciena’s 2021 annual cash incentive compensation plan in the first quarter of fiscal 2022, and a lower accrual rate related to Ciena’s 2022 annual cash incentive compensation plan.
Schedule of Accrued Warranties	The following table summarizes the activity in Ciena’s accrued warranty for the periods indicated (in thousands): Beginning Balance Current Period Provisions Settlements Ending Balance Nine Months Ended July 31, 2021 $ 49,868 12,726 (14,455) $ 48,139 Nine Months Ended July 30, 2022 $ 48,019 12,416 (14,746) $ 45,689
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 July 30, 2022 Balance at October 30, 2021 Accounts receivable, net $ 802,484 $ 884,958 Contract assets for unbilled accounts receivable, net $ 157,448 $ 101,355 Deferred revenue $ 209,653 $ 175,464 As of the dates indicated, deferred revenue is comprised of the following (in thousands): July 30, October 30, Products $ 27,432 $ 12,859 Services 182,221 162,605 Total deferred revenue 209,653 175,464 Less current portion (147,808) (118,007) Long-term deferred revenue $ 61,845 $ 57,457

SHORT-TERM AND LONG-TERM DEBT (

SHORT-TERM AND LONG-TERM DEBT (Tables)	9 Months Ended
	Jul. 30, 2022
Debt Disclosure [Abstract]
Schedule of Carrying Values and Estimated Fair Values of Convertible Notes	The net carrying value of the 2025 Term Loan was comprised of the following for the periods indicated (in thousands): July 30, 2022 October 30, 2021 Principal Balance Unamortized Discount Deferred Debt Issuance Costs Net Carrying Value Net Carrying Value 2025 Term Loan $ 677,407 $ (1,008) $ (1,887) $ 674,512 $ 677,285
Schedule of Long-term Debt Instruments	The net carrying value of the 2030 Notes was comprised of the following for the period indicated (in thousands): July 30, 2022 Principal Balance Deferred Debt Issuance Costs Net Carrying Value 2030 Senior Notes 4.00% fixed-rate $ 400,000 $ (5,129) $ 394,871

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)	9 Months Ended
	Jul. 30, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income	The following table summarizes the changes in accumulated balances of other comprehensive income (“AOCI”), net of tax, for the nine months ended July 30, 2022 (in thousands): Unrealized Gain (Loss) on Cumulative Available-for-sale Securities Foreign Currency Forward Contracts Forward Starting Interest Rate Swaps Foreign Currency Total Balance at October 30, 2021 $ (164) $ 6,216 $ (12,179) $ 6,566 $ 439 Other comprehensive gain (loss) before reclassifications (2,184) (5,207) 2,786 (22,783) (27,388) Amounts reclassified from AOCI — (1,569) 6,639 — 5,070 Balance at July 30, 2022 $ (2,348) $ (560) $ (2,754) $ (16,217) $ (21,879) The following table summarizes the changes in AOCI, net of tax, for the nine months ended July 31, 2021 (in thousands): Unrealized Gain (Loss) on Cumulative Available-for-sale Securities Foreign Currency Forward Contracts Forward Starting Interest Rate Swaps Foreign Currency Total Balance at October 31, 2020 $ 45 $ (219) $ (21,535) $ (13,649) $ (35,358) Other comprehensive gain (loss) before reclassifications (28) 13,574 (1,399) 19,439 31,586 Amounts reclassified from AOCI — (7,907) 7,049 — (858) Balance at July 31, 2021 $ 17 $ 5,448 $ (15,885) $ 5,790 $ (4,630)

EARNINGS_PER SHARE CALCULATION

EARNINGS PER SHARE CALCULATION (Tables)	9 Months Ended
	Jul. 30, 2022
Earnings Per Share [Abstract]
Schedule of 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): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Net income $ 10,512 $ 238,232 $ 95,257 $ 396,697 Basic weighted average shares outstanding 149,862 155,271 152,083 155,277 Effect of dilutive potential common shares 601 1,473 1,126 1,465 Diluted weighted average shares 150,463 156,744 153,209 156,742 Basic EPS $ 0.07 $ 1.53 $ 0.63 $ 2.55 Diluted EPS $ 0.07 $ 1.52 $ 0.62 $ 2.53 Antidilutive employee share-based awards, excluded 1,640 131 1,264 99

SHARE-BASED COMPENSATION EXPE_2

SHARE-BASED COMPENSATION EXPENSE (Tables)	9 Months Ended
	Jul. 30, 2022
Share-Based Payment Arrangement [Abstract]
Schedule of Share-based Compensation Expense	The following table summarizes share-based compensation expense for the periods indicated (in thousands): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Products $ 1,002 $ 1,037 $ 2,960 $ 2,488 Services 1,940 1,315 5,467 3,941 Share-based compensation expense included in cost of goods sold 2,942 2,352 8,427 6,429 Research and development 8,233 5,541 23,372 16,179 Selling and marketing 8,075 6,534 23,196 18,960 General and administrative 7,579 8,237 22,825 21,338 Share-based compensation expense included in operating expense 23,887 20,312 69,393 56,477 Share-based compensation expense capitalized in inventory, net 28 (193) 7 64 Total share-based compensation expense $ 26,857 $ 22,471 $ 77,827 $ 62,970

SEGMENTS AND ENTITY-WIDE DISC_2

SEGMENTS AND ENTITY-WIDE DISCLOSURES (Tables)	9 Months Ended
	Jul. 30, 2022
Segment Reporting [Abstract]
Schedule of Reconciliation of Assets From Segment to Consolidated	As of July 30, 2022, finite-lived intangible assets, goodwill and maintenance spares are assigned to asset groups within the following segments (in thousands): Networking Platforms Platform Software and Services Blue Planet Automation Software and Services Global Services Total Other intangible assets, net $ 41,434 $ — $ 35,484 $ — $ 76,918 Goodwill $ 83,738 $ 156,191 $ 89,049 $ — $ 328,978 Maintenance spares, net $ — $ — $ — $ 45,853 $ 45,853
Schedule of 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 net income for the periods indicated (in thousands): Quarter Ended Nine Months Ended July 30 July 31 July 30 July 31 2022 2021 2022 2021 Segment profit (loss): Networking Platforms $ 108,282 $ 244,535 $ 395,176 $ 612,378 Platform Software and Services 39,646 31,526 132,698 95,692 Blue Planet Automation Software and Services (10,139) (3,243) (17,693) 11 Global Services 52,965 55,507 158,808 147,567 Total segment profit 190,754 328,325 668,989 855,648 Less: Non-performance operating expenses Selling and marketing 105,880 114,924 344,700 322,589 General and administrative 41,121 48,863 131,191 132,491 Significant asset impairments and restructuring costs 7,692 9,789 20,203 23,865 Amortization of intangible assets 8,919 5,967 26,757 17,896 Acquisition and integration costs 35 259 598 860 Add: Other non-performance financial items Interest expense and other income (loss), net (12,276) (6,981) (28,415) (24,521) Less: Provision (benefit) for income taxes 4,319 (96,690) 21,868 (63,271) Net income $ 10,512 $ 238,232 $ 95,257 $ 396,697
Schedule of 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): July 30, October 30, Canada $ 238,288 $ 240,968 United States 51,333 50,744 Other International 37,521 37,541 Total $ 327,142 $ 329,253

REVENUE - Disaggregation of Rev

REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 867,981	$ 988,141	$ 2,661,651	$ 2,579,198
Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	693,848	811,598	2,141,169	2,081,549
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	174,133	176,543	520,482	497,649
Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	563,837	712,906	1,730,066	1,798,888
Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	100,741	69,698	295,638	197,632
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	63,483	56,945	205,557	163,472
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	17,342	16,607	55,334	57,499
Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	72,760	74,006	219,270	212,054
Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	38,704	46,653	120,504	124,263
Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	11,114	11,326	35,282	25,390
Networking Platforms
Disaggregation of Revenue [Line Items]
Total revenue	664,578	782,604	2,025,704	1,996,520
Networking Platforms | Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	664,578	782,604	2,025,704	1,996,520
Networking Platforms | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Networking Platforms | Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	563,837	712,906	1,730,066	1,798,888
Networking Platforms | Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	100,741	69,698	295,638	197,632
Networking Platforms | Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Networking Platforms | Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Networking Platforms | Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Networking Platforms | Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Networking Platforms | Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	63,483	56,945	205,557	163,472
Platform Software and Services | Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	15,230	17,928	66,655	54,756
Platform Software and Services | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	48,253	39,017	138,902	108,716
Platform Software and Services | Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Platform Software and Services | Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Platform Software and Services | Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	63,483	56,945	205,557	163,472
Platform Software and Services | Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Platform Software and Services | Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Platform Software and Services | Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Platform Software and Services | Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	17,342	16,607	55,334	57,499
Blue Planet Automation Software and Services | Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	4,632	4,558	17,442	20,497
Blue Planet Automation Software and Services | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	12,710	12,049	37,892	37,002
Blue Planet Automation Software and Services | Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Blue Planet Automation Software and Services | Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Blue Planet Automation Software and Services | Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Blue Planet Automation Software and Services | Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	17,342	16,607	55,334	57,499
Blue Planet Automation Software and Services | Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Blue Planet Automation Software and Services | Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Blue Planet Automation Software and Services | Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Global Services
Disaggregation of Revenue [Line Items]
Total revenue	122,578	131,985	375,056	361,707
Global Services | Products and services at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	9,408	6,508	31,368	9,776
Global Services | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	113,170	125,477	343,688	351,931
Global Services | Converged Packet Optical
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Global Services | Routing and Switching
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Global Services | Platform Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Global Services | Blue Planet Automation Software and Services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Global Services | Maintenance Support and Training
Disaggregation of Revenue [Line Items]
Total revenue	72,760	74,006	219,270	212,054
Global Services | Installation and Deployment
Disaggregation of Revenue [Line Items]
Total revenue	38,704	46,653	120,504	124,263
Global Services | Consulting and Network Design
Disaggregation of Revenue [Line Items]
Total revenue	$ 11,114	$ 11,326	$ 35,282	$ 25,390

REVENUE - Geographical Distribu

REVENUE - Geographical Distribution of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 867,981	$ 988,141	$ 2,661,651	$ 2,579,198
Americas
Disaggregation of Revenue [Line Items]
Total revenue	617,366	692,853	1,913,350	1,776,939
EMEA
Disaggregation of Revenue [Line Items]
Total revenue	124,185	189,180	420,075	499,652
APAC
Disaggregation of Revenue [Line Items]
Total revenue	$ 126,430	$ 106,108	$ 328,226	$ 302,607

REVENUE - Narrative (Details)

REVENUE - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021	Oct. 30, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 867,981	$ 988,141	$ 2,661,651	$ 2,579,198
Revenue recognized that was previously deferred			98,900	94,700
Capitalized contract acquisition costs	36,100		36,100		$ 27,600
Amortization of capitalized contract acquisition costs			20,500	16,800
United States
Disaggregation of Revenue [Line Items]
Total revenue	$ 574,300	$ 623,900	$ 1,800,000	$ 1,600,000

REVENUE - Revenue by Major Cust

REVENUE - Revenue by Major Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Revenue, Major Customer [Line Items]
Total revenue	$ 867,981	$ 988,141	$ 2,661,651	$ 2,579,198
Verizon | Customer Concentration Risk | Revenue Benchmark
Revenue, Major Customer [Line Items]
Total revenue	108,495	131,892	273,158
AT&T | Customer Concentration Risk | Revenue Benchmark
Revenue, Major Customer [Line Items]
Total revenue	100,293	119,199	314,358	313,140
Web-scale provider | Customer Concentration Risk | Revenue Benchmark
Revenue, Major Customer [Line Items]
Total revenue		119,728
Total | Customer Concentration Risk | Revenue Benchmark
Revenue, Major Customer [Line Items]
Total revenue	$ 208,788	$ 370,819	$ 587,516	$ 313,140

REVENUE - Contract Balances (De

REVENUE - Contract Balances (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Revenue from Contract with Customer [Abstract]
Accounts receivable, net	$ 802,484	$ 884,958
Contract assets for unbilled accounts receivable, net	157,448	101,355
Deferred revenue	$ 209,653	$ 175,464

REVENUE - Performance Obligatio

REVENUE - Performance Obligation (Details) $ in Billions	Jul. 30, 2022 USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 2.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-31
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation	91%
Period of remaining performance obligation	12 months

BUSINESS COMBINATIONS - Narrati

BUSINESS COMBINATIONS - Narrative (Details) - USD ($) $ in Thousands			3 Months Ended		9 Months Ended
	Mar. 09, 2022	Nov. 01, 2021	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Business Acquisition [Line Items]
Acquisition and integration costs			$ 35	$ 259	$ 598	$ 860
Vyatta And Xelic
Business Acquisition [Line Items]
Purchase price, excluding additional contingent compensation arrangement	$ 64,300
Cash paid for acquisition	63,500
Contingent compensation arrangement	$ 800
Acquisition and integration costs					$ 1,700
Vyatta And Xelic | Developed technology
Business Acquisition [Line Items]
Estimated useful lives					5 years
Vyatta | Customer relationships and contracts
Business Acquisition [Line Items]
Estimated useful lives		2 years

BUSINESS COMBINATIONS - Purchas

BUSINESS COMBINATIONS - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Mar. 09, 2022	Oct. 30, 2021
Business Acquisition [Line Items]
Goodwill	$ 328,978		$ 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		17,982
Accrued liabilities		(4,434)
Total purchase consideration		64,348
Vyatta And Xelic | Customer relationships and contracts
Business Acquisition [Line Items]
Intangible assets		15,800
Vyatta And Xelic | Developed technology
Business Acquisition [Line Items]
Intangible assets		$ 32,491

CANADIAN EMERGENCY WAGE SUBSI_3

CANADIAN EMERGENCY WAGE SUBSIDY - Narrative (Details) $ in Thousands, $ in Millions	3 Months Ended		9 Months Ended			12 Months Ended
	Jul. 30, 2022 USD ($)	Jul. 31, 2021 USD ($)	Jul. 30, 2022 USD ($)	Jul. 31, 2021 CAD ($)	Jul. 31, 2021 USD ($)	Oct. 31, 2020 CAD ($)	Oct. 31, 2020 USD ($)
Canadian Emergency Wage Subsidy
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	$ 0	$ 836	$ 0	$ 52.2	$ 41,280
Grants, Canada Emergency Wage Subsidy, 2020 Employee Wages
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit						$ 43.9	$ 35,200

CANADIAN EMERGENCY WAGE SUBSI_4

CANADIAN EMERGENCY WAGE SUBSIDY - Schedule of Canadian Emergency Wage Subsidy (Details) - Canadian Emergency Wage Subsidy $ in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 30, 2022 USD ($)	Jul. 31, 2021 USD ($)	Jul. 30, 2022 USD ($)	Jul. 31, 2021 CAD ($)	Jul. 31, 2021 USD ($)
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	$ 0	$ 836	$ 0	$ 52.2	$ 41,280
Product
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	0	94	0		4,283
Service
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	0	47	0		2,667
CEWS benefit in cost of goods sold
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	0	141	0		6,950
Research and development
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	0	596	0		29,519
Sales and marketing
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	0	53	0		2,604
General and administrative
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	0	46	0		2,207
CEWS benefit in operating expense
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	$ 0	$ 695	$ 0		$ 34,330

SIGNIFICANT ASSET IMPAIRMENT _3

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS - Schedule of Restructuring Liabilities (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 781	$ 2,915
Charges	16,216	23,864
Cash payments	(15,538)	(25,609)
Balance at end of period	1,459	1,170
Current restructuring liabilities	1,459	1,170
Workforce reduction
Restructuring Reserve [Roll Forward]
Balance at beginning of period	781	2,915
Charges	2,224	5,306
Cash payments	(2,423)	(7,051)
Balance at end of period	582	1,170
Current restructuring liabilities	582	1,170
Other restructuring activities
Restructuring Reserve [Roll Forward]
Balance at beginning of period	0	0
Charges	13,992	18,558
Cash payments	(13,115)	(18,558)
Balance at end of period	877	0
Current restructuring liabilities	$ 877	$ 0

SIGNIFICANT ASSET IMPAIRMENT _4

SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS - Narrative (Details) $ in Millions	Mar. 07, 2022 USD ($)
Restructuring and Related Activities [Abstract]
Asset impairment charges	$ 4.1
Provision for credit losses	$ 2

INTEREST AND OTHER INCOME (LO_3

INTEREST AND OTHER INCOME (LOSS), NET (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Other Income and Expenses [Abstract]
Interest income	$ 2,774	$ 465	$ 4,962	$ 1,553
Gains (losses) on non-hedge designated foreign currency forward contracts	(985)	(4,414)	(2,911)	5,295
Foreign currency exchange gains (losses)	(788)	4,959	2,711	(8,534)
Unrealized gain on cost method equity investment	0	0	4,120	0
Other	(635)	(215)	(4,022)	86
Interest and other income (loss), net	$ 366	$ 795	$ 4,860	$ (1,600)

INCOME TAXES (Details)

INCOME TAXES (Details) $ in Millions	9 Months Ended
	Jul. 30, 2022 USD ($)
Income Tax Disclosure [Abstract]
Intra-entity transfer of non-US intellectual property rights, income tax benefit	$ 124.2

CASH EQUIVALENT, SHORT-TERM A_3

CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS - Components of Investments (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 517,541	$ 322,939
Gross Unrealized Gains	17	5
Gross Unrealized Losses	(3,071)	(197)
Estimated Fair Value	514,487	322,747
Cash equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	114,941	71,226
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	114,941	71,226
Included in short-term investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	322,820	181,488
Gross Unrealized Gains	14	5
Gross Unrealized Losses	(1,011)	(10)
Estimated Fair Value	321,823	181,483
Included in long-term investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	79,780	70,225
Gross Unrealized Gains	3	0
Gross Unrealized Losses	(2,060)	(187)
Estimated Fair Value	77,723	70,038
U.S. government obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	361,659	251,713
Gross Unrealized Gains	11	5
Gross Unrealized Losses	(2,945)	(197)
Estimated Fair Value	358,725	251,521
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	33,969
Gross Unrealized Gains	5
Gross Unrealized Losses	(100)
Estimated Fair Value	33,874
Time deposits
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	121,913	71,226
Gross Unrealized Gains	1	0
Gross Unrealized Losses	(26)	0
Estimated Fair Value	$ 121,888	$ 71,226

CASH EQUIVALENT, SHORT-TERM A_4

CASH EQUIVALENT, SHORT-TERM AND LONG-TERM INVESTMENTS - Legal Maturities of Debt Investments (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Amortized Cost
Less than one year	$ 437,761
Due in 1-2 years	79,780
Amortized Cost	517,541	$ 322,939
Estimated Fair Value
Less than one year	436,764
Due in 1-2 years	77,723
Estimated Fair Value	$ 514,487	$ 322,747

FAIR VALUE MEASUREMENTS - Fair

FAIR VALUE MEASUREMENTS - Fair Value Measurements (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Assets:
Debt securities	$ 514,487	$ 322,747
Forward Starting Interest Rate Swaps
Liabilities:
Derivative liability	759	15,928
Corporate debt securities
Assets:
Debt securities	33,874
Level 1 | Forward Starting Interest Rate Swaps
Liabilities:
Derivative liability	0
Level 2 | Forward Starting Interest Rate Swaps
Liabilities:
Derivative liability	759
Level 3 | Forward Starting Interest Rate Swaps
Liabilities:
Derivative liability	0
Fair value, Measurements, Recurring
Assets:
Deferred compensation plan assets	13,184	12,968
Total assets measured at fair value	1,133,857	1,546,926
Liabilities:
Total liabilities measured at fair value	7,736	16,644
Fair value, Measurements, Recurring | Foreign Currency Forward Contracts
Assets:
Foreign currency forward contracts	3,024	14,935
Liabilities:
Derivative liability	3,399	716
Fair value, Measurements, Recurring | Forward Starting Interest Rate Swaps
Liabilities:
Derivative liability	4,337
Fair value, Measurements, Recurring | Bond mutual fund
Assets:
Debt securities	70,717	75,425
Fair value, Measurements, Recurring | U.S. government obligations
Assets:
Debt securities	358,725	251,521
Fair value, Measurements, Recurring | Corporate debt securities
Assets:
Debt securities	33,874
Fair value, Measurements, Recurring | Money market funds
Assets:
Cash equivalents	531,686	1,120,851
Fair value, Measurements, Recurring | Time deposits
Assets:
Cash equivalents	121,888	71,226
Fair value, Measurements, Recurring | Level 1
Assets:
Deferred compensation plan assets	13,184	12,968
Total assets measured at fair value	737,475	1,280,470
Liabilities:
Total liabilities measured at fair value	0	0
Fair value, Measurements, Recurring | Level 1 | Foreign Currency Forward Contracts
Assets:
Foreign currency forward contracts	0	0
Liabilities:
Derivative liability	0	0
Fair value, Measurements, Recurring | Level 1 | Forward Starting Interest Rate Swaps
Liabilities:
Derivative liability	0	0
Fair value, Measurements, Recurring | Level 1 | Bond mutual fund
Assets:
Debt securities	70,717	75,425
Fair value, Measurements, Recurring | Level 1 | U.S. government obligations
Assets:
Debt securities	0	0
Fair value, Measurements, Recurring | Level 1 | Corporate debt securities
Assets:
Debt securities	0
Fair value, Measurements, Recurring | Level 1 | Money market funds
Assets:
Cash equivalents	531,686	1,120,851
Fair value, Measurements, Recurring | Level 1 | Time deposits
Assets:
Cash equivalents	121,888	71,226
Fair value, Measurements, Recurring | Level 2
Assets:
Deferred compensation plan assets	0	0
Total assets measured at fair value	396,382	266,456
Liabilities:
Total liabilities measured at fair value	7,736	16,644
Fair value, Measurements, Recurring | Level 2 | Foreign Currency Forward Contracts
Assets:
Foreign currency forward contracts	3,024	14,935
Liabilities:
Derivative liability	3,399	716
Fair value, Measurements, Recurring | Level 2 | Forward Starting Interest Rate Swaps
Liabilities:
Derivative liability	4,337	15,928
Fair value, Measurements, Recurring | Level 2 | Bond mutual fund
Assets:
Debt securities	0	0
Fair value, Measurements, Recurring | Level 2 | U.S. government obligations
Assets:
Debt securities	358,725	251,521
Fair value, Measurements, Recurring | Level 2 | Corporate debt securities
Assets:
Debt securities	33,874
Fair value, Measurements, Recurring | Level 2 | Money market funds
Assets:
Cash equivalents	0	0
Fair value, Measurements, Recurring | Level 2 | Time deposits
Assets:
Cash equivalents	0	0
Fair value, Measurements, Recurring | Level 3
Assets:
Deferred compensation plan assets	0	0
Total assets measured at fair value	0	0
Liabilities:
Total liabilities measured at fair value	0	0
Fair value, Measurements, Recurring | Level 3 | Foreign Currency Forward Contracts
Assets:
Foreign currency forward contracts	0	0
Liabilities:
Derivative liability	0	0
Fair value, Measurements, Recurring | Level 3 | Forward Starting Interest Rate Swaps
Liabilities:
Derivative liability	0	0
Fair value, Measurements, Recurring | Level 3 | Bond mutual fund
Assets:
Debt securities	0	0
Fair value, Measurements, Recurring | Level 3 | U.S. government obligations
Assets:
Debt securities	0	0
Fair value, Measurements, Recurring | Level 3 | Corporate debt securities
Assets:
Debt securities	0
Fair value, Measurements, Recurring | Level 3 | Money market funds
Assets:
Cash equivalents	0	0
Fair value, Measurements, Recurring | Level 3 | Time deposits
Assets:
Cash equivalents	$ 0	$ 0

FAIR VALUE MEASUREMENTS - Conde

FAIR VALUE MEASUREMENTS - Condensed Consolidated Balance Sheet (Details) - Fair value, Measurements, Recurring - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Assets:
Total assets measured at fair value	$ 1,133,857	$ 1,546,926
Liabilities:
Total liabilities measured at fair value	7,736	16,644
Cash equivalents
Assets:
Cash equivalents	717,344	1,267,502
Short-term investments
Assets:
Short-term investments	321,823	181,483
Prepaid expenses and other
Assets:
Other assets	3,024	14,935
Long-term investments
Assets:
Long-term investments	77,723	70,038
Other long-term assets
Assets:
Other assets	13,943	12,968
Accrued liabilities and other short-term obligations
Liabilities:
Accrued liabilities and other short-term obligations	3,399	716
Other long-term obligations
Liabilities:
Other long-term obligations	4,337	15,928
Level 1
Assets:
Total assets measured at fair value	737,475	1,280,470
Liabilities:
Total liabilities measured at fair value	0	0
Level 1 | Cash equivalents
Assets:
Cash equivalents	717,344	1,267,502
Level 1 | Short-term investments
Assets:
Short-term investments	6,947	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	13,184	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	0
Level 2
Assets:
Total assets measured at fair value	396,382	266,456
Liabilities:
Total liabilities measured at fair value	7,736	16,644
Level 2 | Cash equivalents
Assets:
Cash equivalents	0	0
Level 2 | Short-term investments
Assets:
Short-term investments	314,876	181,483
Level 2 | Prepaid expenses and other
Assets:
Other assets	3,024	14,935
Level 2 | Long-term investments
Assets:
Long-term investments	77,723	70,038
Level 2 | Other long-term assets
Assets:
Other assets	759	0
Level 2 | Accrued liabilities and other short-term obligations
Liabilities:
Accrued liabilities and other short-term obligations	3,399	716
Level 2 | Other long-term obligations
Liabilities:
Other long-term obligations	4,337	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	$ 0

INVENTORIES (Details)

INVENTORIES (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Oct. 30, 2021
Inventory Disclosure [Abstract]
Raw materials	$ 621,849		$ 175,399
Work-in-process	19,462		10,260
Finished goods	187,008		180,800
Deferred cost of goods sold	33,800		44,765
Gross inventories	862,119		411,224
Reserve for inventory excess and obsolescence	(35,446)		(36,959)
Inventories, net	826,673		$ 374,265
Provisions	$ 12,038	$ 13,460

PREPAID EXPENSES AND OTHER (Det

PREPAID EXPENSES AND OTHER (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Oct. 30, 2021
Capitalized Contract Cost [Line Items]
Prepaid VAT and other taxes	$ 71,140		$ 77,388
Prepaid expenses	64,498		62,189
Product demonstration equipment, net	35,722		29,362
Other non-trade receivables	14,878		18,408
Derivative assets	3,024		14,935
Deferred deployment expense	574		264
Prepaid expenses and other	377,709		325,654
Depreciation of product demonstration equipment	6,800	$ 7,600
Contract assets for unbilled accounts receivable, net
Capitalized Contract Cost [Line Items]
Contract assets	157,448		101,355
Capitalized contract acquisition costs
Capitalized Contract Cost [Line Items]
Contract assets	$ 30,425		$ 21,753

INTANGIBLE ASSETS - Schedule of

INTANGIBLE ASSETS - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Intangible	$ 826,855	$ 778,870
Accumulated Amortization	(749,937)	(713,556)
Net Intangible	76,918	65,314
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Intangible	428,218	395,726
Accumulated Amortization	(382,090)	(359,828)
Net Intangible	46,128	35,898
Patents and licenses
Finite-Lived Intangible Assets [Line Items]
Gross Intangible	7,815	7,815
Accumulated Amortization	(3,991)	(3,321)
Net Intangible	3,824	4,494
Customer relationships, covenants not to compete, outstanding purchase orders and contracts
Finite-Lived Intangible Assets [Line Items]
Gross Intangible	390,822	375,329
Accumulated Amortization	(363,856)	(350,407)
Net Intangible	$ 26,966	$ 24,922

INTANGIBLE ASSETS - Narrative (

INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Aggregate amortization expense of intangible assets	$ 36,521	$ 27,341

INTANGIBLE ASSETS - Schedule _2

INTANGIBLE ASSETS - Schedule of Expected Future Amortization of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
2022 (remaining three months)	$ 7,757
2023	28,821
2024	19,187
2025	13,323
2026	7,105
Thereafter	725
Net Intangible	$ 76,918	$ 65,314

OTHER BALANCE SHEET DETAILS - A

OTHER BALANCE SHEET DETAILS - Accrued Liabilities and Other Short-term Obligations (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021	Jul. 31, 2021	Oct. 31, 2020
Balance Sheet Related Disclosures [Abstract]
Compensation, payroll related tax and benefits	$ 98,174	$ 201,119
Warranty	45,689	48,019	$ 48,139	$ 49,868
Vacation	27,721	31,200
Interest payable	9,386	598
Income taxes payable	4,830	13,577
Finance lease liabilities	3,923	3,620
Foreign currency forward contracts	3,399	716
Other	108,467	110,436
Total accrued liabilities and other short-term obligations	$ 301,589	$ 409,285

OTHER BALANCE SHEET DETAILS -_2

OTHER BALANCE SHEET DETAILS - Accrued Warranty (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning Balance	$ 48,019	$ 49,868
Current Period Provisions	12,416	12,726
Settlements	(14,746)	(14,455)
Ending Balance	$ 45,689	$ 48,139

OTHER BALANCE SHEET DETAILS - D

OTHER BALANCE SHEET DETAILS - Deferred Revenue (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 209,653	$ 175,464
Less current portion	(147,808)	(118,007)
Long-term deferred revenue	61,845	57,457
Products
Disaggregation of Revenue [Line Items]
Total deferred revenue	27,432	12,859
Services
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 182,221	$ 162,605

DERIVATIVE INSTRUMENTS (Details

DERIVATIVE INSTRUMENTS (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 30, 2022	Oct. 30, 2021
Foreign Currency Forward Contracts | Designated as Hedging Instrument | Cash Flow Hedging
Derivative [Line Items]
Derivative asset, notional amount	$ 238.8	$ 288.6
Derivative maturity (in months)	24 months
Foreign Currency Forward Contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative asset, notional amount	$ 111.7	296.1
Derivative maturity (in months)	12 months
Forward Starting Interest Rate Swaps | Designated as Hedging Instrument | Cash Flow Hedging | Secured Debt | 2025 Term Loan
Derivative [Line Items]
Derivative asset, notional amount	$ 350	$ 350
Derivative, fixed interest rate	2.957%
Forward Starting Interest Rate Swaps | Designated as Hedging Instrument | Cash Flow Hedging | Secured Debt | 2025 Term Loan | SOFR
Derivative [Line Items]
Derivative asset, notional amount	$ 350
Derivative, fixed interest rate	2.968%

SHORT-TERM AND LONG-TERM DEBT -

SHORT-TERM AND LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Thousands		9 Months Ended
	Jan. 18, 2022	Jul. 30, 2022	Jul. 31, 2021	Oct. 30, 2021	Jan. 23, 2020
Secured Debt | 2025 Term Loan
Debt Instrument [Line Items]
Aggregate principal amount		$ 677,407			$ 693,000
Debt issuance costs, net		1,887		$ 2,300
Amortization of debt issuance costs		500	$ 500
Fair value of debt		674,100
Senior Notes | 2030 Senior Notes 4.00% fixed-rate
Debt Instrument [Line Items]
Aggregate principal amount		400,000
Amortization of debt issuance costs		400
Fair value of debt		$ 368,000
Debt instrument, face amount	$ 400,000
Debt instrument, interest rate, stated percentage	4%	4%
Proceeds from issuance of debt	$ 395,500
Event of default, percent of principal, threshold	25%
Deferred Debt Issuance Costs		$ 5,129
Senior Notes | 2030 Senior Notes 4.00% fixed-rate | Prior to January 31, 2025
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed	102%
Senior Notes | 2030 Senior Notes 4.00% fixed-rate | On or After January 31, 2025
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	104%
Debt instrument, redemption price, percentage of principal amount redeemed	40%
Senior Notes | 2030 Senior Notes 4.00% fixed-rate | Change of Control Triggering Event
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	101%

SHORT-TERM AND LONG-TERM DEBT_2

SHORT-TERM AND LONG-TERM DEBT - Term Loan (Details) - Secured Debt - 2025 Term Loan - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021	Jan. 23, 2020
Debt Instrument [Line Items]
Principal Balance	$ 677,407		$ 693,000
Unamortized Discount	(1,008)
Deferred Debt Issuance Costs	(1,887)	$ (2,300)
Net Carrying Value	$ 674,512	$ 677,285

SHORT-TERM AND LONG-TERM DEBT_3

SHORT-TERM AND LONG-TERM DEBT - Senior Notes (Details) - Senior Notes - 2030 Senior Notes 4.00% fixed-rate - USD ($) $ in Thousands	Jul. 30, 2022	Jan. 18, 2022
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4%	4%
Principal Balance	$ 400,000
Deferred Debt Issuance Costs	(5,129)
Net Carrying Value	$ 394,871

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity - beginning balance	$ 3,020,018	$ 2,509,597
Other comprehensive gain (loss) before reclassifications	(27,388)	31,586
Amounts reclassified from AOCI	5,070	(858)
Equity- ending balance	2,667,736	2,924,236
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity - beginning balance	439	(35,358)
Equity- ending balance	(21,879)	(4,630)
Available-for-sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity - beginning balance	(164)	45
Other comprehensive gain (loss) before reclassifications	(2,184)	(28)
Amounts reclassified from AOCI	0	0
Equity- ending balance	(2,348)	17
Unrealized Gain (Loss) Derivatives | Foreign Currency Forward Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity - beginning balance	6,216	(219)
Other comprehensive gain (loss) before reclassifications	(5,207)	13,574
Amounts reclassified from AOCI	(1,569)	(7,907)
Equity- ending balance	(560)	5,448
Unrealized Gain (Loss) Derivatives | Forward Starting Interest Rate Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity - beginning balance	(12,179)	(21,535)
Other comprehensive gain (loss) before reclassifications	2,786	(1,399)
Amounts reclassified from AOCI	6,639	7,049
Equity- ending balance	(2,754)	(15,885)
Cumulative
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity - beginning balance	6,566	(13,649)
Other comprehensive gain (loss) before reclassifications	(22,783)	19,439
Amounts reclassified from AOCI	0	0
Equity- ending balance	$ (16,217)	$ 5,790

EARNINGS_PER SHARE CALCULATIO_2

EARNINGS PER SHARE CALCULATION (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Earnings Per Share [Abstract]
Net income	$ 10,512	$ 238,232	$ 95,257	$ 396,697
Basic weighted average shares outstanding (in shares)	149,862	155,271	152,083	155,277
Effect of dilutive potential common shares (in shares)	601	1,473	1,126	1,465
Dilutive weighted average shares (in shares)	150,463	156,744	153,209	156,742
Basic EPS (in dollars per share)	$ 0.07	$ 1.53	$ 0.63	$ 2.55
Diluted EPS (in dollars per share)	$ 0.07	$ 1.52	$ 0.62	$ 2.53
Antidilutive employee share-based awards, excluded (in shares)	1,640	131	1,264	99

STOCKHOLDERS_ EQUITY (Details)

STOCKHOLDERS’ EQUITY (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	9 Months Ended
	Jul. 30, 2022	Feb. 11, 2022	Dec. 13, 2021	Dec. 09, 2021
Accelerated Share Repurchases [Line Items]
Stock repurchases (in shares)	4.7
Stock repurchases	$ 242
Average price of shares repurchased (in dollars per share)	$ 51.50
Aggregate shares repurchased (in shares)	8.3
Aggregate shares repurchased	$ 492
Aggregate average price of shares repurchased (in dollars per share)	$ 59.42
Authorized funds remaining under stock repurchase program	$ 508
Shares repurchased for tax withholdings on vesting of restricted stock units	$ (41.3)
Stock Repurchase Program
Accelerated Share Repurchases [Line Items]
Stock repurchase program authorized amount				$ 1,000
Accelerated Share Repurchase Agreement
Accelerated Share Repurchases [Line Items]
Stock repurchase program authorized amount			$ 250
Authorized amount of stock repurchase program (in shares)		3.6
Share price (in dollars per share)		$ 69.78

SHARE-BASED COMPENSATION EXPE_3

SHARE-BASED COMPENSATION EXPENSE (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense capitalized in inventory, net	$ 28	$ (193)	$ 7	$ 64
Total share-based compensation expense	26,857	22,471	77,827	62,970
Share-based compensation expense included in cost of goods sold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	2,942	2,352	8,427	6,429
Products
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	1,002	1,037	2,960	2,488
Services
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	1,940	1,315	5,467	3,941
Share-based compensation expense included in operating expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	23,887	20,312	69,393	56,477
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	8,233	5,541	23,372	16,179
Selling and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	8,075	6,534	23,196	18,960
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 7,579	$ 8,237	$ 22,825	$ 21,338

SHARE-BASED COMPENSATION EXPE_4

SHARE-BASED COMPENSATION EXPENSE - Narrative (Details) - Restricted Stock Units (RSUs) $ in Millions	9 Months Ended
	Jul. 30, 2022 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation	$ 201.3
Weighted-average period for recognition of share-based compensation (in years)	1 year 6 months 25 days

SEGMENTS AND ENTITY-WIDE DISC_3

SEGMENTS AND ENTITY-WIDE DISCLOSURES - Narrative (Details) $ in Thousands	9 Months Ended
	Jul. 30, 2022 USD ($) segment	Oct. 30, 2021 USD ($)
Segment Reporting [Abstract]
Equipment, building, furniture and fixtures, net	$ 281,690	$ 284,968
Operating right-of-use assets	$ 45,452	$ 44,285
Number of operating segments | segment	4

SEGMENTS AND ENTITY-WIDE DISC_4

SEGMENTS AND ENTITY-WIDE DISCLOSURES - Other Intangibles Assets, Goodwill and Maintenance Spares (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Segment Reporting Information [Line Items]
Net Intangible	$ 76,918	$ 65,314
Goodwill	328,978	$ 311,645
Maintenance spares, net	45,853
Networking Platforms
Segment Reporting Information [Line Items]
Net Intangible	41,434
Goodwill	83,738
Maintenance spares, net	0
Platform Software and Services
Segment Reporting Information [Line Items]
Net Intangible	0
Goodwill	156,191
Maintenance spares, net	0
Blue Planet Automation Software and Services
Segment Reporting Information [Line Items]
Net Intangible	35,484
Goodwill	89,049
Maintenance spares, net	0
Global Services
Segment Reporting Information [Line Items]
Net Intangible	0
Goodwill	0
Maintenance spares, net	$ 45,853

SEGMENTS AND ENTITY-WIDE DISC_5

SEGMENTS AND ENTITY-WIDE DISCLOSURES - Revenue, Profit (Loss) and Net Income (Loss) Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Less: Non-performance operating expenses
Selling and marketing	$ 105,880	$ 114,924	$ 344,700	$ 322,589
General and administrative	41,121	48,863	131,191	132,491
Significant asset impairments and restructuring costs	7,692	9,789	20,203	23,865
Amortization of intangible assets	8,919	5,967	26,757	17,896
Acquisition and integration costs	35	259	598	860
Add: Other non-performance financial items
Interest expense and other income (loss), net	(12,276)	(6,981)	(28,415)	(24,521)
Less: Provision (benefit) for income taxes	4,319	(96,690)	21,868	(63,271)
Net income	10,512	238,232	95,257	396,697
Operating Segments
Add: Other non-performance financial items
Net income	190,754	328,325	668,989	855,648
Networking Platforms | Operating Segments
Add: Other non-performance financial items
Net income	108,282	244,535	395,176	612,378
Platform Software and Services | Operating Segments
Add: Other non-performance financial items
Net income	39,646	31,526	132,698	95,692
Blue Planet Automation Software and Services | Operating Segments
Add: Other non-performance financial items
Net income	(10,139)	(3,243)	(17,693)	11
Global Services | Operating Segments
Add: Other non-performance financial items
Net income	$ 52,965	$ 55,507	$ 158,808	$ 147,567

SEGMENTS AND ENTITY-WIDE DISC_6

SEGMENTS AND ENTITY-WIDE DISCLOSURES - Geographic Distribution of Equipment, Building, Furniture and Fixtures (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Oct. 30, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Equipment, building, furniture and fixtures, net	$ 327,142	$ 329,253
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Equipment, building, furniture and fixtures, net	238,288	240,968
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Equipment, building, furniture and fixtures, net	51,333	50,744
Other International
Revenues from External Customers and Long-Lived Assets [Line Items]
Equipment, building, furniture and fixtures, net	$ 37,521	$ 37,541

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	9 Months Ended
	Sep. 02, 2022	Jul. 30, 2022
Subsequent Event [Line Items]
Stock repurchases (in shares)		4,700,000
Stock repurchases		$ 242
Average price of shares repurchased (in dollars per share)		$ 51.50
Aggregate shares repurchased (in shares)		8,300,000
Authorized funds remaining under stock repurchase program		$ 508
Subsequent event
Subsequent Event [Line Items]
Stock repurchases (in shares)	154,247
Stock repurchases	$ 8
Average price of shares repurchased (in dollars per share)	$ 51.91
Aggregate shares repurchased (in shares)	8,433,957
Authorized funds remaining under stock repurchase program	$ 500

Uncategorized Items - cien-2022

Label	Element	Value
Accounting Standards Update [Extensible Enumeration]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]