$CIEN
CIENA CORP Stock $cien

$cien Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-K Financial Statement

#000093639524000044 Filed on December 20, 2024

Income Statement

Concept	2024 Q4	2024
Revenue		$4.015B
YoY Change		-8.47%
Cost Of Revenue		$2.295B
YoY Change		-8.47%
Gross Profit		$1.720B
YoY Change		-8.48%
Gross Profit Margin		42.83%
Selling, General & Admin		$731.3M
YoY Change		3.57%
% of Gross Profit		42.53%
Research & Development		$767.5M
YoY Change		2.26%
% of Gross Profit		44.63%
Depreciation & Amortization		$92.85M
YoY Change		0.3%
% of Gross Profit		5.4%
Operating Expenses		$1.553B
YoY Change		2.08%
Operating Profit		$166.6M
YoY Change		-53.4%
Interest Expense		$62.12M
YoY Change		-29.43%
% of Operating Profit		37.28%
Other Income/Expense, Net		-$1.584M
YoY Change		-68.62%
Pretax Income		$119.9M
YoY Change		-62.97%
Income Tax		$35.89M
% Of Pretax Income		29.95%
Net Earnings		$83.96M
YoY Change		-67.05%
Net Earnings / Revenue		2.09%
Basic Earnings Per Share		$0.58
Diluted Earnings Per Share		$0.58
COMMON SHARES
Basic Shares Outstanding	142.1M shares	144.7M shares
Diluted Shares Outstanding		146.0M shares

Balance Sheet

Concept	2024 Q4	2024
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$934.9M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory	$820.4M
Prepaid Expenses
Receivables	$908.6M
Other Receivables
Total Short-Term Assets	$3.544B
YoY Change	-0.88%
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill	$444.7M
YoY Change	-0.01%
Intangibles	$165.0M
YoY Change	-19.75%
Long-Term Investments
YoY Change
Other Assets	$154.7M
YoY Change	32.84%
Total Long-Term Assets	$2.097B
YoY Change	3.52%
TOTAL ASSETS
Total Short-Term Assets	$3.544B
Total Long-Term Assets	$2.097B
Total Assets	$5.641B
YoY Change	0.71%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$423.4M
YoY Change	33.22%
Accrued Expenses	$393.9M
YoY Change	-8.7%
Deferred Revenue	$156.4M
YoY Change	1.27%
Short-Term Debt
YoY Change
Long-Term Debt Due	$11.70M
YoY Change	0.0%
Total Short-Term Liabilities	$999.8M
YoY Change	7.28%
LONG-TERM LIABILITIES
Long-Term Debt	$1.533B
YoY Change	-0.67%
Other Long-Term Liabilities	$185.9M
YoY Change	9.11%
Total Long-Term Liabilities	$1.719B
YoY Change	0.3%
TOTAL LIABILITIES
Total Short-Term Liabilities	$999.8M
Total Long-Term Liabilities	$1.719B
Total Liabilities	$2.825B
YoY Change	2.62%
SHAREHOLDERS EQUITY
Retained Earnings	-$3.293B
YoY Change	-2.49%
Common Stock	$6.156B
YoY Change	-1.71%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.816B
YoY Change
Total Liabilities & Shareholders Equity	$5.641B
YoY Change	0.71%

Cashflow Statement

Concept	2024 Q4	2024
OPERATING ACTIVITIES
Net Income		$83.96M
YoY Change		-67.05%
Depreciation, Depletion And Amortization		$92.85M
YoY Change		0.3%
Cash From Operating Activities		$514.5M
YoY Change		205.66%
INVESTING ACTIVITIES
Capital Expenditures		$136.6M
YoY Change		28.67%
Acquisitions		$0.00
YoY Change		-100.0%
Other Investing Activities
YoY Change
Cash From Investing Activities		-$306.5M
YoY Change		-20.07%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$220.2M
YoY Change		4.44%
Debt Paid & Issued, Net		$11.70M
YoY Change		24.07%
Cash From Financing Activities		-$285.1M
YoY Change		-224.27%
NET CHANGE
Cash From Operating Activities		$514.5M
Cash From Investing Activities		-$306.5M
Cash From Financing Activities		-$285.1M
Net Change In Cash		-$75.76M
YoY Change		-561.73%
FREE CASH FLOW
Cash From Operating Activities		$514.5M
Capital Expenditures		$136.6M
Free Cash Flow		$377.9M
YoY Change		508.18%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2024	dei	Document Type DocumentType	10-K
CY2024	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
CY2024	dei	Trading Symbol TradingSymbol	CIEN
CY2024	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2024	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
CY2024	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2024	dei	Amendment Flag AmendmentFlag	false
CY2024	dei	Document Annual Report DocumentAnnualReport	true
CY2024	dei	Entity File Number EntityFileNumber	001-36250
CY2024	dei	Entity Registrant Name EntityRegistrantName	Ciena Corp
CY2024	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2024	dei	Entity Address Address Line1 EntityAddressAddressLine1	7035 Ridge Road
CY2024	dei	Entity Address City Or Town EntityAddressCityOrTown	Hanover
CY2024	dei	Entity Address State Or Province EntityAddressStateOrProvince	MD
CY2024	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	23-2725311
CY2024	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	21076
CY2024	dei	City Area Code CityAreaCode	410
CY2024	dei	Local Phone Number LocalPhoneNumber	694-5700
CY2024	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2024	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2024	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2024	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2024	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2024	dei	Entity Small Business EntitySmallBusiness	false
CY2024	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2024	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2024	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2024	dei	Entity Shell Company EntityShellCompany	false
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	142115595	shares
CY2024	dei	Auditor Firm AuditorFirmId	238
CY2024	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2024	dei	Auditor Location AuditorLocation	Baltimore, Maryland
CY2024Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	934863000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1010618000	usd
CY2024Q4	us-gaap	Short Term Investments ShortTermInvestments	316343000	usd
CY2023Q4	us-gaap	Short Term Investments ShortTermInvestments	104753000	usd
CY2024Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	908597000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1003876000	usd
CY2024Q4	us-gaap	Inventory Net InventoryNet	820430000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	1050838000	usd
CY2024Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	564183000	usd
CY2023Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	405694000	usd
CY2024Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	14455000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	16655000	usd
CY2024Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	11700000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	11700000	usd
CY2024Q4	us-gaap	Liabilities Current LiabilitiesCurrent	999840000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	932021000	usd
CY2024Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	81240000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	74041000	usd
CY2024Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	185938000	usd
CY2024Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	25107000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	33259000	usd
CY2024Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1533074000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1543406000	usd
CY2024Q4	us-gaap	Liabilities Liabilities	2825199000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	2753134000	usd
CY2024Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2024Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2024Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2024Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2024Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2024Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2024Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	290000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	290000000	shares
CY2024Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	142656116	shares
CY2024Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	142656116	shares
CY2024Q4	us-gaap	Common Stock Value CommonStockValue	1427000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	1448000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	6262083000	usd
CY2024Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-46711000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-37767000	usd
CY2024Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-3293447000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-3377403000	usd
CY2024Q4	us-gaap	Stockholders Equity StockholdersEquity	2816138000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2848361000	usd
CY2024Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5641337000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5601495000	usd
CY2024	us-gaap	Revenues Revenues	4014955000	usd
CY2023	us-gaap	Revenues Revenues	4386549000	usd
CY2022	us-gaap	Revenues Revenues	3632661000	usd
CY2024	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2295365000	usd
CY2023	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2507698000	usd
CY2022	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2072317000	usd
CY2024	us-gaap	Gross Profit GrossProfit	1719590000	usd
CY2023	us-gaap	Gross Profit GrossProfit	1878851000	usd
CY2022	us-gaap	Gross Profit GrossProfit	1560344000	usd
CY2024	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	767497000	usd
CY2023	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	750559000	usd
CY2022	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	624656000	usd
CY2024	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	510668000	usd
CY2023	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	490804000	usd
CY2024	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	220647000	usd
CY2023	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	215284000	usd
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	179382000	usd
CY2024	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	24592000	usd
CY2023	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	23834000	usd
CY2022	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	33824000	usd
CY2024	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29569000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	37351000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	32511000	usd
CY2024	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2023	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	3474000	usd
CY2022	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	598000	usd
CY2024	us-gaap	Operating Expenses OperatingExpenses	1552973000	usd
CY2023	us-gaap	Operating Expenses OperatingExpenses	1521306000	usd
CY2022	us-gaap	Operating Expenses OperatingExpenses	1337536000	usd
CY2024	us-gaap	Operating Income Loss OperatingIncomeLoss	166617000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	357545000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	222808000	usd
CY2024	cien	Interest And Other Income Loss Net InterestAndOtherIncomeLossNet	50261000	usd
CY2023	cien	Interest And Other Income Loss Net InterestAndOtherIncomeLossNet	62008000	usd
CY2022	cien	Interest And Other Income Loss Net InterestAndOtherIncomeLossNet	6747000	usd
CY2024	cien	Gain Loss On Extinguishment And Restructuring Of Debt GainLossOnExtinguishmentAndRestructuringOfDebt	0	usd
CY2023	cien	Gain Loss On Extinguishment And Restructuring Of Debt GainLossOnExtinguishmentAndRestructuringOfDebt	-7874000	usd
CY2022	cien	Gain Loss On Extinguishment And Restructuring Of Debt GainLossOnExtinguishmentAndRestructuringOfDebt	0	usd
CY2024	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	119850000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	182505000	usd
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35894000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	68826000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29603000	usd
CY2024	us-gaap	Net Income Loss NetIncomeLoss	83956000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	254827000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	152902000	usd
CY2024	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.58
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.71
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
CY2024	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2024	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	144715000	shares
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	148971000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	151208000	shares
CY2024	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	145964000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149380000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	152193000	shares
CY2024	us-gaap	Net Income Loss NetIncomeLoss	83956000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	254827000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	152902000	usd
CY2024	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	1170000	usd
CY2022	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-2801000	usd
CY2024	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-3096000	usd
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-5321000	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-49446000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	8878000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-47084000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	263705000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	105818000	usd
CY2023Q4	us-gaap	Restructuring Reserve RestructuringReserve	1913000	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-400000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	2500000	usd
CY2022Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	36086000	usd
CY2024	us-gaap	Inventory Write Down InventoryWriteDown	77341000	usd
CY2024Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	107173000	usd
CY2024	dei	Entity Central Index Key EntityCentralIndexKey	0000936395
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CY2024Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
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CY2024	dei	Document Period End Date DocumentPeriodEndDate	2024-11-02
CY2024	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--11-02
CY2024	dei	Document Transition Report DocumentTransitionReport	false
CY2024Q2	dei	Entity Public Float EntityPublicFloat	6700000000	usd
CY2024Q4	us-gaap	Assets Current AssetsCurrent	3544416000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	3575779000	usd
CY2024	us-gaap	Revenues Revenues	4014955000	usd
CY2024	us-gaap	Revenues Revenues	4014955000	usd
CY2023	us-gaap	Revenues Revenues	4386549000	usd
CY2023	us-gaap	Revenues Revenues	4386549000	usd
CY2022	us-gaap	Revenues Revenues	3632661000	usd
CY2022	us-gaap	Revenues Revenues	3632661000	usd
CY2024	us-gaap	Revenues Revenues	4014955000	usd
CY2023	us-gaap	Revenues Revenues	4386549000	usd
CY2022	us-gaap	Revenues Revenues	3632661000	usd
CY2024Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	80920000	usd
CY2023Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	134278000	usd
CY2024Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	337722000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	280147000	usd
CY2024Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	27417000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	35140000	usd
CY2024Q4	us-gaap	Goodwill Goodwill	444707000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	444765000	usd
CY2024Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	165020000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	205627000	usd
CY2024Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	886441000	usd
CY2023Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	809306000	usd
CY2024Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	154694000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	116453000	usd
CY2024Q4	us-gaap	Assets Assets	5641337000	usd
CY2023Q4	us-gaap	Assets Assets	5601495000	usd
CY2024Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	423401000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	317828000	usd
CY2024Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	393905000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	431419000	usd
CY2024Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	156379000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	154419000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	170407000	usd
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2024Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	144829938	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	144829938	shares
CY2024Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	6154869000	usd
CY2022	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	466565000	usd
CY2024	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	97028000	usd
CY2023	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	88026000	usd
CY2022	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	47050000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	323653000	usd
CY2023	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	2593000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8944000	usd
CY2024	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	75012000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3020018000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	152902000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-47084000	usd
CY2022	cien	Stock Repurchased During Period Excluding Shares Purchased For Tax Withholdings For Share Based Compensation Value StockRepurchasedDuringPeriodExcludingSharesPurchasedForTaxWithholdingsForShareBasedCompensationValue	500000000	usd
CY2022	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	30348000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	105131000	usd
CY2022	cien	Stock Repurchased During Period Shares Purchased For Tax Withholdings For Share Based Compensation Value StockRepurchasedDuringPeriodSharesPurchasedForTaxWithholdingsForShareBasedCompensationValue	48454000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	2712861000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	254827000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	8878000	usd
CY2023	cien	Stock Repurchased During Period Excluding Shares Purchased For Tax Withholdings For Share Based Compensation Value StockRepurchasedDuringPeriodExcludingSharesPurchasedForTaxWithholdingsForShareBasedCompensationValue	251511000	usd
CY2023	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	31357000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	130455000	usd
CY2023	cien	Stock Repurchased During Period Shares Purchased For Tax Withholdings For Share Based Compensation Value StockRepurchasedDuringPeriodSharesPurchasedForTaxWithholdingsForShareBasedCompensationValue	38506000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2848361000	usd
CY2024	us-gaap	Net Income Loss NetIncomeLoss	83956000	usd
CY2024	us-gaap	Net Income Loss NetIncomeLoss	83956000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8944000	usd
CY2024	cien	Stock Repurchased During Period Excluding Shares Purchased For Tax Withholdings For Share Based Compensation Value StockRepurchasedDuringPeriodExcludingSharesPurchasedForTaxWithholdingsForShareBasedCompensationValue	251363000	usd
CY2024	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	34291000	usd
CY2024	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	156404000	usd
CY2024	cien	Stock Repurchased During Period Shares Purchased For Tax Withholdings For Share Based Compensation Value StockRepurchasedDuringPeriodSharesPurchasedForTaxWithholdingsForShareBasedCompensationValue	46567000	usd
CY2024Q4	us-gaap	Stockholders Equity StockholdersEquity	2816138000	usd
CY2024	us-gaap	Net Income Loss NetIncomeLoss	83956000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	254827000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	152902000	usd
CY2024	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1864000	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2024	us-gaap	Depreciation Depreciation	92846000	usd
CY2023	us-gaap	Depreciation Depreciation	92564000	usd
CY2022	us-gaap	Depreciation Depreciation	95922000	usd
CY2024	us-gaap	Share Based Compensation ShareBasedCompensation	156404000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	130455000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	105131000	usd
CY2024	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	40624000	usd
CY2023	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	49616000	usd
CY2022	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	44281000	usd
CY2024	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-76810000	usd
CY2023	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-14852000	usd
CY2022	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-27502000	usd
CY2024	us-gaap	Inventory Write Down InventoryWriteDown	77341000	usd
CY2023	us-gaap	Inventory Write Down InventoryWriteDown	29464000	usd
CY2022	us-gaap	Inventory Write Down InventoryWriteDown	16184000	usd
CY2024	us-gaap	Product Warranty Expense ProductWarrantyExpense	25643000	usd
CY2023	us-gaap	Product Warranty Expense ProductWarrantyExpense	31742000	usd
CY2022	us-gaap	Product Warranty Expense ProductWarrantyExpense	17440000	usd
CY2024	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	0	usd
CY2023	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	26368000	usd
CY2022	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	4120000	usd
CY2024	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-11768000	usd
CY2023	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-15771000	usd
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4120000	usd
CY2024	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-80313000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	94565000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	47069000	usd
CY2024	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-153021000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	132497000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	589113000	usd
CY2024	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	198910000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	51965000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	58996000	usd
CY2024	cien	Increase Decrease In Operating Lease Right Of Use Assets IncreaseDecreaseInOperatingLeaseRightOfUseAssets	-11837000	usd
CY2023	cien	Increase Decrease In Operating Lease Right Of Use Assets IncreaseDecreaseInOperatingLeaseRightOfUseAssets	-14190000	usd
CY2022	cien	Increase Decrease In Operating Lease Right Of Use Assets IncreaseDecreaseInOperatingLeaseRightOfUseAssets	-16453000	usd
CY2024	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	64255000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-138469000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	100327000	usd
CY2024	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	9884000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	27412000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	26380000	usd
CY2024	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-17640000	usd
CY2023	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-20857000	usd
CY2022	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-20096000	usd
CY2024	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	514532000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	168332000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-167756000	usd
CY2024	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	136641000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	106197000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	90818000	usd
CY2024	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	287536000	usd
CY2023	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	252329000	usd
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	647526000	usd
CY2024	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	140836000	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	208104000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	702197000	usd
CY2024	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	21682000	usd
CY2023	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	0	usd
CY2022	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	8000000	usd
CY2024	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	1454000	usd
CY2023	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	2984000	usd
CY2022	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	-4942000	usd
CY2024	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	230048000	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	62043000	usd
CY2024	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-306477000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-383454000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-101248000	usd
CY2024	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	usd
CY2023	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	400000000	usd
CY2024	us-gaap	Proceeds From Issuance Of Medium Term Notes ProceedsFromIssuanceOfMediumTermNotes	0	usd
CY2023	us-gaap	Proceeds From Issuance Of Medium Term Notes ProceedsFromIssuanceOfMediumTermNotes	497500000	usd
CY2022	us-gaap	Proceeds From Issuance Of Medium Term Notes ProceedsFromIssuanceOfMediumTermNotes	0	usd
CY2024	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	11700000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	9430000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	5197000	usd
CY2024	cien	Proceeds From Modification Of Term Loan ProceedsFromModificationOfTermLoan	0	usd
CY2023	cien	Proceeds From Modification Of Term Loan ProceedsFromModificationOfTermLoan	830000	usd
CY2022	cien	Proceeds From Modification Of Term Loan ProceedsFromModificationOfTermLoan	0	usd
CY2024	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2554000	usd
CY2023	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	6379000	usd
CY2022	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	5484000	usd
CY2024	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	4029000	usd
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	3791000	usd
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	3468000	usd
CY2024	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	46567000	usd
CY2023	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	38506000	usd
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	48454000	usd
CY2024	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	254502000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	242201000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	500800000	usd
CY2024	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	34291000	usd
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	31357000	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	30348000	usd
CY2024	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-285061000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	229380000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-133055000	usd
CY2024	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1246000	usd
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2150000	usd
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-26167000	usd
CY2024	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-75760000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	16408000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-428226000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1010786000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	994378000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1422604000	usd
CY2024Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	935026000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1010786000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	994378000	usd
CY2024	us-gaap	Interest Paid Net InterestPaidNet	92515000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	84465000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	42812000	usd
CY2024	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	54956000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	78242000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	34967000	usd
CY2024	us-gaap	Operating Lease Payments OperatingLeasePayments	19452000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	22782000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	21661000	usd
CY2024	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	14682000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	6990000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	12373000	usd
CY2024	cien	Repurchase Of Common Stock In Accrued Liabilities From Repurchase Program RepurchaseOfCommonStockInAccruedLiabilitiesFromRepurchaseProgram	6172000	usd
CY2023	cien	Repurchase Of Common Stock In Accrued Liabilities From Repurchase Program RepurchaseOfCommonStockInAccruedLiabilitiesFromRepurchaseProgram	9310000	usd
CY2022	cien	Repurchase Of Common Stock In Accrued Liabilities From Repurchase Program RepurchaseOfCommonStockInAccruedLiabilitiesFromRepurchaseProgram	0	usd
CY2024	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6912000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	10236000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	23242000	usd
CY2024	cien	Noncash Gain Loss From Cost Method Equity Investment NoncashGainLossFromCostMethodEquityInvestment	0	usd
CY2023	cien	Noncash Gain Loss From Cost Method Equity Investment NoncashGainLossFromCostMethodEquityInvestment	26368000	usd
CY2022	cien	Noncash Gain Loss From Cost Method Equity Investment NoncashGainLossFromCostMethodEquityInvestment	4120000	usd
CY2024	us-gaap	Fiscal Period FiscalPeriod	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Ciena has a 52 or 53-week fiscal year, which ends on the Saturday nearest to the last day of October in each year (</span><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">November 2, 2024</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, </span><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">October 28, 2023,</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> and </span><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">October 29, 2022,</span> for the periods reported). Fiscal 2024 was a 53-week fiscal year with the additional week occurring in the fourth quarter. Fiscal 2023 and fiscal 2022 each consisted of a 52-week fiscal year.
CY2024	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of the financial statements and related disclosures in conformity with Generally Accepted Accounting Principles (“GAAP”) requires management to make estimates and judgments that affect the amounts reported in the consolidated financial statements and accompanying notes. Estimates are used for selling prices for multiple element arrangements, shared-based compensation, bad debts, valuation of inventories and investments, recoverability of intangible assets, other long-lived assets and goodwill, income taxes, warranty obligations, restructuring liabilities, derivatives, contingencies and litigation. Ciena bases its estimates on historical experience and assumptions that it believes are reasonable. Actual results may differ materially from management’s estimates.</span></div>
CY2024Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	21700000	usd
CY2024Q4	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P7Y
CY2024	cien	Maintenance Spare Parts Amortization Period MaintenanceSparePartsAmortizationPeriod	P4Y
CY2024	cien	One Time Employee Termination Benefits Related Service Period OneTimeEmployeeTerminationBenefitsRelatedServicePeriod	P60D
CY2024Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	908597000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1003876000	usd
CY2024Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	127919000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	150312000	usd
CY2024Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	237619000	usd
CY2023Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	228460000	usd
CY2024	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	153900000	usd
CY2023	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	135500000	usd
CY2024Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	28400000	usd
CY2023Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	30200000	usd
CY2024	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	30500000	usd
CY2023	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	34200000	usd
CY2024Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1600000000	usd
CY2024Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.77
CY2024Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2021Q4	us-gaap	Restructuring Reserve RestructuringReserve	781000	usd
CY2022	us-gaap	Restructuring Charges RestructuringCharges	29970000	usd
CY2022	us-gaap	Payments For Restructuring PaymentsForRestructuring	24916000	usd
CY2022Q4	us-gaap	Restructuring Reserve RestructuringReserve	5835000	usd
CY2023	us-gaap	Restructuring Charges RestructuringCharges	23834000	usd
CY2023	us-gaap	Payments For Restructuring PaymentsForRestructuring	27756000	usd
CY2024	us-gaap	Restructuring Charges RestructuringCharges	24592000	usd
CY2024	us-gaap	Payments For Restructuring PaymentsForRestructuring	24578000	usd
CY2024Q4	us-gaap	Restructuring Reserve RestructuringReserve	1927000	usd
CY2024Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	1927000	usd
CY2022Q1	us-gaap	Asset Impairment Charges AssetImpairmentCharges	3800000	usd
CY2022Q1	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	1800000	usd
CY2024	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	62121000	usd
CY2023	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	45011000	usd
CY2022	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	10060000	usd
CY2024	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	1377000	usd
CY2023	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-3896000	usd
CY2022	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-4018000	usd
CY2024	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-11653000	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-427000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	2501000	usd
CY2024	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	0	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	26368000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	4120000	usd
CY2024	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1584000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5048000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5916000	usd
CY2024	cien	Interest And Other Income Loss Net InterestAndOtherIncomeLossNet	50261000	usd
CY2023	cien	Interest And Other Income Loss Net InterestAndOtherIncomeLossNet	62008000	usd
CY2022	cien	Interest And Other Income Loss Net InterestAndOtherIncomeLossNet	6747000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	4100000	usd
CY2024	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-11700000	usd
CY2024	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	1400000	usd
CY2023	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-3900000	usd
CY2022	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-4000000	usd
CY2024Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	489398000	usd
CY2024Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	892000	usd
CY2024Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	162000	usd
CY2024Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	490128000	usd
CY2024Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	489398000	usd
CY2024Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	892000	usd
CY2024Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	162000	usd
CY2024Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	490128000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	368773000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	33000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	499000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	368307000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	368773000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	33000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	499000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	368307000	usd
CY2024Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	408519000	usd
CY2024Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	409208000	usd
CY2024Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	80879000	usd
CY2024Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	80920000	usd
CY2024Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	489398000	usd
CY2024Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	490128000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10912000	usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4199000	usd
CY2022	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	4153000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10958000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10958000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5718000	usd
CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	5022000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	11654000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	11654000	usd
CY2024	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	7996000	usd
CY2024	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	9770000	usd
CY2024Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	9880000	usd
CY2024Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	542785000	usd
CY2023Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	664797000	usd
CY2024Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	32219000	usd
CY2023Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	55242000	usd
CY2024Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	324697000	usd
CY2023Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	314168000	usd
CY2024Q4	us-gaap	Other Inventory Capitalized Costs OtherInventoryCapitalizedCosts	27902000	usd
CY2023Q4	us-gaap	Other Inventory Capitalized Costs OtherInventoryCapitalizedCosts	66634000	usd
CY2024Q4	us-gaap	Inventory Gross InventoryGross	927603000	usd
CY2023Q4	us-gaap	Inventory Gross InventoryGross	1100841000	usd
CY2024Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	107173000	usd
CY2023Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	50003000	usd
CY2024Q4	us-gaap	Inventory Net InventoryNet	820430000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	1050838000	usd
CY2024	us-gaap	Inventory Write Down InventoryWriteDown	77300000	usd
CY2023	us-gaap	Inventory Write Down InventoryWriteDown	29500000	usd
CY2022	us-gaap	Inventory Write Down InventoryWriteDown	16200000	usd
CY2021Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	36959000	usd
CY2022	us-gaap	Inventory Write Down InventoryWriteDown	16184000	usd
CY2022	cien	Inventory Valuation Reserves Disposals InventoryValuationReservesDisposals	17057000	usd
CY2022Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	36086000	usd
CY2023	us-gaap	Inventory Write Down InventoryWriteDown	29464000	usd
CY2023	cien	Inventory Valuation Reserves Disposals InventoryValuationReservesDisposals	15547000	usd
CY2023Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	50003000	usd
CY2023Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	50003000	usd
CY2024	cien	Inventory Valuation Reserves Disposals InventoryValuationReservesDisposals	20171000	usd
CY2024Q4	us-gaap	Customer Funds CustomerFunds	167337000	usd
CY2023Q4	us-gaap	Customer Funds CustomerFunds	0	usd
CY2024Q4	us-gaap	Prepaid Taxes PrepaidTaxes	106095000	usd
CY2023Q4	us-gaap	Prepaid Taxes PrepaidTaxes	96724000	usd
CY2024Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	50597000	usd
CY2023Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	58954000	usd
CY2024Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	45935000	usd
CY2023Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	33408000	usd
CY2024Q4	cien	Product Demonstration Equipment Net ProductDemonstrationEquipmentNet	43245000	usd
CY2023Q4	cien	Product Demonstration Equipment Net ProductDemonstrationEquipmentNet	40682000	usd
CY2024Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	2149000	usd
CY2023Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	1118000	usd
CY2024Q4	us-gaap	Deferred Costs Current DeferredCostsCurrent	596000	usd
CY2023Q4	us-gaap	Deferred Costs Current DeferredCostsCurrent	1170000	usd
CY2024Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	564183000	usd
CY2023Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	405694000	usd
CY2024	cien	Depreciation Of Product Demonstration Equipment DepreciationOfProductDemonstrationEquipment	8300000	usd
CY2023	cien	Depreciation Of Product Demonstration Equipment DepreciationOfProductDemonstrationEquipment	8000000.0	usd
CY2022	cien	Depreciation Of Product Demonstration Equipment DepreciationOfProductDemonstrationEquipment	8700000	usd
CY2024Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	933749000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	818780000	usd
CY2024Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	596027000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	538633000	usd
CY2024Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	337722000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	280147000	usd
CY2024Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1012447000	usd
CY2024Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	847427000	usd
CY2024Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	165020000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1012496000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	806869000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	205627000	usd
CY2024	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	40600000	usd
CY2023	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	49600000	usd
CY2022	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	44300000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	444765000	usd
CY2024	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-58000	usd
CY2024Q4	us-gaap	Goodwill Goodwill	444707000	usd
CY2024Q4	cien	Maintenance Spares Inventory Net Non Current MaintenanceSparesInventoryNetNonCurrent	77918000	usd
CY2023Q4	cien	Maintenance Spares Inventory Net Non Current MaintenanceSparesInventoryNetNonCurrent	54042000	usd
CY2024Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	21730000	usd
CY2023Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	48000	usd
CY2024Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	16519000	usd
CY2023Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	11456000	usd
CY2024Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	11777000	usd
CY2023Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	24953000	usd
CY2024Q4	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	8111000	usd
CY2023Q4	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	6879000	usd
CY2024Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized After Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization	5641000	usd
CY2023Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized After Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization	8589000	usd
CY2024Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	1733000	usd
CY2023Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	1956000	usd
CY2024Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	163000	usd
CY2023Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	168000	usd
CY2024Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	11102000	usd
CY2023Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	8362000	usd
CY2024Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	154694000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	116453000	usd
CY2024	us-gaap	Hosting Arrangement Service Contract Implementation Cost Expense Amortization HostingArrangementServiceContractImplementationCostExpenseAmortization	4900000	usd
CY2023	us-gaap	Hosting Arrangement Service Contract Implementation Cost Expense Amortization HostingArrangementServiceContractImplementationCostExpenseAmortization	2600000	usd
CY2022	us-gaap	Hosting Arrangement Service Contract Implementation Cost Expense Amortization HostingArrangementServiceContractImplementationCostExpenseAmortization	2800000	usd
CY2024Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	148732000	usd
CY2023Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	159530000	usd
CY2024Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	55267000	usd
CY2023Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	57089000	usd
CY2024Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	31250000	usd
CY2023Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	29503000	usd
CY2024Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	35111000	usd
CY2023Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	16341000	usd
CY2024Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	9155000	usd
CY2023Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	14509000	usd
CY2024Q4	us-gaap	Interest Payable Current InterestPayableCurrent	6120000	usd
CY2023Q4	us-gaap	Interest Payable Current InterestPayableCurrent	4514000	usd
CY2024Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	4395000	usd
CY2023Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	3953000	usd
CY2024Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	103875000	usd
CY2023Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	145980000	usd
CY2024Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	393905000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	431419000	usd
CY2021Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	48019000	usd
CY2022	us-gaap	Product Warranty Expense ProductWarrantyExpense	17440000	usd
CY2022	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	19956000	usd
CY2022Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	45503000	usd
CY2022Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	45503000	usd
CY2023	us-gaap	Product Warranty Expense ProductWarrantyExpense	31742000	usd
CY2023	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	20156000	usd
CY2023Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	57089000	usd
CY2023Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	57089000	usd
CY2024	us-gaap	Product Warranty Expense ProductWarrantyExpense	25643000	usd
CY2024	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	27465000	usd
CY2024Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	55267000	usd
CY2024Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	237619000	usd
CY2023Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	228460000	usd
CY2024Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	156379000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	154419000	usd
CY2024Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	81240000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	74041000	usd
CY2024Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	113365000	usd
CY2023Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	98259000	usd
CY2024Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	43522000	usd
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	48192000	usd
CY2024Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	16509000	usd
CY2023Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	11444000	usd
CY2024Q4	cien	Other Obligations Noncurrent OtherObligationsNoncurrent	12542000	usd
CY2023Q4	cien	Other Obligations Noncurrent OtherObligationsNoncurrent	12512000	usd
CY2024Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	185938000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	170407000	usd
CY2022	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-54034000	usd
CY2022	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-6950000	usd
CY2023	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	8417000	usd
CY2023	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-461000	usd
CY2024	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	1224000	usd
CY2024	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	10168000	usd
CY2024Q4	cien	Lessee Operating Lease Area Of Property Leased LesseeOperatingLeaseAreaOfPropertyLeased	1100000	sqft
CY2024	cien	Lease Remaining Lease Term LeaseRemainingLeaseTerm	P8Y
CY2024	cien	Lessee Lease Renewal Term LesseeLeaseRenewalTerm	P10Y
CY2024	cien	Lessee Lease Termination Period LesseeLeaseTerminationPeriod	P4Y
CY2024Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	27417000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	35140000	usd
CY2024Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	39562000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	49914000	usd
CY2024Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	67517000	usd
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	67904000	usd
CY2024Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	34206000	usd
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	30079000	usd
CY2024Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	33311000	usd
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	37825000	usd
CY2024Q4	cien	Lessee Operating Lease Right Of Use Asset Subleased Or Vacant LesseeOperatingLeaseRightOfUseAssetSubleasedOrVacant	4900000	usd
CY2024Q4	cien	Lessee Finance Lease Right Of Use Asset Subleased Or Vacant LesseeFinanceLeaseRightOfUseAssetSubleasedOrVacant	5300000	usd
CY2024	us-gaap	Operating Lease Cost OperatingLeaseCost	13595000	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	16080000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	17966000	usd
CY2024	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	4406000	usd
CY2023	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	4448000	usd
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	4592000	usd
CY2024	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	3769000	usd
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	4069000	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	4601000	usd
CY2024	cien	Finance Lease Cost FinanceLeaseCost	8175000	usd
CY2023	cien	Finance Lease Cost FinanceLeaseCost	8517000	usd
CY2022	cien	Finance Lease Cost FinanceLeaseCost	9193000	usd
CY2024	us-gaap	Short Term Lease Cost ShortTermLeaseCost	954000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	910000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	917000	usd
CY2024	us-gaap	Variable Lease Cost VariableLeaseCost	2562000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	3421000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	5898000	usd
CY2024	us-gaap	Lease Cost LeaseCost	25286000	usd
CY2023	us-gaap	Lease Cost LeaseCost	28928000	usd
CY2022	us-gaap	Lease Cost LeaseCost	33974000	usd
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	15601000	usd
CY2024Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	7749000	usd
CY2024Q4	cien	Lease Liability Payment Due Year One LeaseLiabilityPaymentDueYearOne	23350000	usd
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	11187000	usd
CY2024Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	7779000	usd
CY2024Q4	cien	Lease Liability Payment Due Year Two LeaseLiabilityPaymentDueYearTwo	18966000	usd
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6587000	usd
CY2024Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	8049000	usd
CY2024Q4	cien	Lease Liability Payment Due Year Three LeaseLiabilityPaymentDueYearThree	14636000	usd
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2157000	usd
CY2024Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	8319000	usd
CY2024Q4	cien	Lease Liability Payment Due Year Four LeaseLiabilityPaymentDueYearFour	10476000	usd
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2578000	usd
CY2024Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	8319000	usd
CY2024Q4	cien	Lease Liability Payment Due Year Five LeaseLiabilityPaymentDueYearFive	10897000	usd
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	5393000	usd
CY2024Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	22937000	usd
CY2024Q4	cien	Lease Liability Payment Due After Year Five LeaseLiabilityPaymentDueAfterYearFive	28330000	usd
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	43503000	usd
CY2024Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	63152000	usd
CY2024Q4	cien	Lease Liability Payment Due LeaseLiabilityPaymentDue	106655000	usd
CY2024Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3941000	usd
CY2024Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	15235000	usd
CY2024Q4	cien	Lease Liability Undiscounted Excess Amount LeaseLiabilityUndiscountedExcessAmount	19176000	usd
CY2024Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	39562000	usd
CY2024Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	47917000	usd
CY2024Q4	cien	Lease Liability LeaseLiability	87479000	usd
CY2024Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	14455000	usd
CY2024Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	4395000	usd
CY2024Q4	cien	Lease Liability Current LeaseLiabilityCurrent	18850000	usd
CY2024Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	25107000	usd
CY2024Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	43522000	usd
CY2024Q4	cien	Lease Liability Noncurrent LeaseLiabilityNoncurrent	68629000	usd
CY2024Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y25D
CY2024Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P7Y8M15D
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P8Y8M15D
CY2024Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0429
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0388
CY2024Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0756
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0756
CY2024	us-gaap	Net Income Loss NetIncomeLoss	83956000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	254827000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	152902000	usd
CY2024	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	144715000	shares
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	148971000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	151208000	shares
CY2024	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1249000	shares
CY2023	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	409000	shares
CY2022	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	985000	shares
CY2024	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	145964000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149380000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	152193000	shares
CY2024	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.58
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.71
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
CY2024	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2024	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1057000	shares
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2675000	shares
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1370000	shares
CY2024	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	18600000	shares
CY2024	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1000000000	usd
CY2024	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	53.63
CY2023Q4	cien	Net Exercise Tax NetExerciseTax	1500000	usd
CY2024Q4	cien	Net Exercise Tax NetExerciseTax	1400000	usd
CY2024	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	46600000	usd
CY2024	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	70208000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	36537000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	27479000	usd
CY2024	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	14106000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	18860000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	10289000	usd
CY2024	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	28390000	usd
CY2023	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	28281000	usd
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	19337000	usd
CY2024	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	112704000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	83678000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	57105000	usd
CY2024	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-52300000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-8010000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-30032000	usd
CY2024	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-4868000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-17354000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	520000	usd
CY2024	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-19642000	usd
CY2023	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	10512000	usd
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2010000	usd
CY2024	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-76810000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-14852000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-27502000	usd
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35894000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	68826000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29603000	usd
CY2024	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	244000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	93682000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	28784000	usd
CY2024	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	119606000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	229971000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	153721000	usd
CY2024	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	119850000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	323653000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	182505000	usd
CY2024	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2024	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0560
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0165
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0231
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.0353
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.0009
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.0137
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.4023
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.1678
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.2366
CY2024	cien	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost And Other Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCostAndOtherPercent	0.1392
CY2023	cien	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost And Other Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCostAndOtherPercent	0.0529
CY2022	cien	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost And Other Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCostAndOtherPercent	0.0526
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Gilti Percent EffectiveIncomeTaxRateReconciliationGiltiPercent	0.0959
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Gilti Percent EffectiveIncomeTaxRateReconciliationGiltiPercent	0.0508
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Gilti Percent EffectiveIncomeTaxRateReconciliationGiltiPercent	0.0173
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.0296
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.0106
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.0190
CY2024	cien	Effective Income Tax Rate Reconciliation Taxation On Foreign Inflation Percent EffectiveIncomeTaxRateReconciliationTaxationOnForeignInflationPercent	0.0303
CY2023	cien	Effective Income Tax Rate Reconciliation Taxation On Foreign Inflation Percent EffectiveIncomeTaxRateReconciliationTaxationOnForeignInflationPercent	0.0134
CY2022	cien	Effective Income Tax Rate Reconciliation Taxation On Foreign Inflation Percent EffectiveIncomeTaxRateReconciliationTaxationOnForeignInflationPercent	0.0141
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.0446
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.0371
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.0127
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.0215
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.0944
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.0835
CY2024	cien	Effective Income Tax Rate Reconciliation Loss On Equity Transactions Percent EffectiveIncomeTaxRateReconciliationLossOnEquityTransactionsPercent	0
CY2023	cien	Effective Income Tax Rate Reconciliation Loss On Equity Transactions Percent EffectiveIncomeTaxRateReconciliationLossOnEquityTransactionsPercent	0.0172
CY2022	cien	Effective Income Tax Rate Reconciliation Loss On Equity Transactions Percent EffectiveIncomeTaxRateReconciliationLossOnEquityTransactionsPercent	0
CY2024	cien	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent	0.0809
CY2023	cien	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent	0.0172
CY2022	cien	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent	0.0162
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.0177
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.0089
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.0020
CY2024	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2995
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2127
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.1622
CY2024Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	79272000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	82160000	usd
CY2024Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	760685000	usd
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CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	6934000	usd
CY2024Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1078323000	usd
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CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	3229000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2959000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1039000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	80514000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	9940000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	625000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	4960000	usd
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CY2024	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	51000	usd
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CY2024Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	337700000	usd
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CY2024	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	510668000	usd
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CY2024	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	24592000	usd
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CY2022	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	33824000	usd
CY2024	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29569000	usd
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CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35894000	usd
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CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29603000	usd
CY2024	us-gaap	Net Income Loss NetIncomeLoss	83956000	usd
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CY2022	us-gaap	Net Income Loss NetIncomeLoss	152902000	usd
CY2024Q4	cien	Property Plant And Equipment Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization And Operating Lease Right Of Use Asset PropertyPlantAndEquipmentFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAndOperatingLeaseRightOfUseAsset	365139000	usd
CY2023Q4	cien	Property Plant And Equipment Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization And Operating Lease Right Of Use Asset PropertyPlantAndEquipmentFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAndOperatingLeaseRightOfUseAsset	315287000	usd
CY2024Q4	us-gaap	Purchase Obligation PurchaseObligation	1700000000	usd
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CY2024	ecd	Insider Trd Policies Proc Adopted Flag InsiderTrdPoliciesProcAdoptedFlag	true

Files In Submission

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$CIEN
CIENA CORP Stock $cien

2024 Q4 Form 10-K Financial Statement

#000093639524000044 Filed on December 20, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CIEN CIENA CORP Stock $cien

2024 Q4 Form 10-K Financial Statement

#000093639524000044 Filed on December 20, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CIEN
CIENA CORP Stock $cien