$CIEN
CIENA CORP Stock $cien

$cien Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000093639518000048 Filed on December 21, 2018

Income Statement

Concept	2018 Q4	2017 Q4	2016 Q4
Revenue	$899.4M	$744.4M	$716.2M
YoY Change	20.82%	3.94%	3.5%
Cost Of Revenue	$501.3M	$418.8M	$397.6M
YoY Change	19.7%	5.33%	2.21%
Gross Profit	$398.1M	$325.7M	$318.5M
YoY Change	22.23%	2.26%	5.12%
Gross Profit Margin	44.26%	43.75%	44.47%
Selling, General & Admin	$157.3M	$132.1M	$129.0M
YoY Change	19.08%	2.4%	1.74%
% of Gross Profit	39.51%	40.56%	40.5%
Research & Development	$135.0M	$119.1M	$112.4M
YoY Change	13.35%	5.96%	4.17%
% of Gross Profit	33.91%	36.57%	35.29%
Depreciation & Amortization	$28.70M	$27.30M	$35.70M
YoY Change	5.13%	-23.53%	-34.5%
% of Gross Profit	7.21%	8.38%	11.21%
Operating Expenses	$296.9M	$254.7M	$256.0M
YoY Change	16.57%	-0.51%	-5.57%
Operating Profit	$101.2M	$71.00M	$62.50M
YoY Change	42.54%	13.6%	95.92%
Interest Expense	-$15.80M	-$12.60M	-$16.70M
YoY Change	25.4%	-24.55%	-10.7%
% of Operating Profit	-15.61%	-17.75%	-26.72%
Other Income/Expense, Net	-$400.0K	$0.00
YoY Change
Pretax Income	$53.80M	$42.50M	$43.00M
YoY Change	26.59%	-1.16%	-552.63%
Income Tax	-$6.100M	$7.500M	$6.400M
% Of Pretax Income	-11.34%	17.65%	14.88%
Net Earnings	$64.00M	$1.160B	$36.60M
YoY Change	-94.48%	3069.67%	-365.22%
Net Earnings / Revenue	7.12%	155.84%	5.11%
Basic Earnings Per Share
Diluted Earnings Per Share	$445.4K	$6.224M	$221.4K
COMMON SHARES
Basic Shares Outstanding	156.5M shares	143.7M shares	140.4M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2018 Q4	2017 Q4	2016 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$894.4M	$919.6M	$1.053B
YoY Change	-2.74%	-12.66%	13.69%
Cash & Equivalents	$745.4M	$640.5M	$777.6M
Short-Term Investments	$149.0M	$279.1M	$275.2M
Other Short-Term Assets	$172.6M	$185.7M	$164.7M
YoY Change	-7.05%	12.75%	-1.79%
Inventory	$262.8M	$267.1M	$211.3M
Prepaid Expenses
Receivables	$799.0M	$622.2M	$576.2M
Other Receivables	$26.30M	$11.70M	$8.200M
Total Short-Term Assets	$2.143B	$2.006B	$2.013B
YoY Change	6.79%	-0.34%	7.99%
LONG-TERM ASSETS
Property, Plant & Equipment	$292.1M	$308.5M	$288.4M
YoY Change	-5.32%	6.96%	50.23%
Goodwill	$298.0M	$267.5M	$267.0M
YoY Change	11.41%	0.18%	4.11%
Intangibles	$148.2M	$101.0M	$146.7M
YoY Change	46.76%	-31.16%	-27.61%
Long-Term Investments	$67.00M	$55.80M	$90.20M
YoY Change	20.07%	-38.14%	-5.15%
Other Assets	$71.65M	$63.59M	$67.00M
YoY Change	12.67%	-5.09%	-20.85%
Total Long-Term Assets	$1.635B	$1.945B	$860.4M
YoY Change	-15.96%	126.11%	3.56%
TOTAL ASSETS
Total Short-Term Assets	$2.143B	$2.006B	$2.013B
Total Long-Term Assets	$1.635B	$1.945B	$860.4M
Total Assets	$3.778B	$3.952B	$2.874B
YoY Change	-4.41%	37.52%	6.62%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$340.6M	$260.1M	$235.9M
YoY Change	30.94%	10.24%	6.21%
Accrued Expenses	$340.1M	$322.9M	$310.4M
YoY Change	5.31%	4.05%	-1.87%
Deferred Revenue	$111.1M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$10.50M	$356.1M	$238.6M
YoY Change	-97.05%	49.25%	3124.32%
Total Short-Term Liabilities	$963.0M	$1.038B	$891.5M
YoY Change	-7.2%	16.4%	33.66%
LONG-TERM LIABILITIES
Long-Term Debt	$686.5M	$583.7M	$1.017B
YoY Change	17.61%	-42.63%	-19.99%
Other Long-Term Liabilities	$119.4M	$111.3M	$124.4M
YoY Change	7.24%	-10.49%	71.48%
Total Long-Term Liabilities	$805.9M	$695.0M	$1.142B
YoY Change	15.95%	-39.13%	-15.05%
TOTAL LIABILITIES
Total Short-Term Liabilities	$963.0M	$1.038B	$891.5M
Total Long-Term Liabilities	$805.9M	$695.0M	$1.142B
Total Liabilities	$1.827B	$1.815B	$2.107B
YoY Change	0.65%	-13.85%	1.59%
SHAREHOLDERS EQUITY
Retained Earnings	-$4.898B	-$4.664B	-$5.926B
YoY Change	5.01%	-21.29%	-1.21%
Common Stock	$6.883B	$6.812B	$6.717B
YoY Change	1.04%	1.41%	1.13%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.929B	$2.136B	$766.3M
YoY Change
Total Liabilities & Shareholders Equity	$3.778B	$3.952B	$2.874B
YoY Change	-4.41%	37.52%	6.62%

Cashflow Statement

Concept	2018 Q4	2017 Q4	2016 Q4
OPERATING ACTIVITIES
Net Income	$64.00M	$1.160B	$36.60M
YoY Change	-94.48%	3069.67%	-365.22%
Depreciation, Depletion And Amortization	$28.70M	$27.30M	$35.70M
YoY Change	5.13%	-23.53%	-34.5%
Cash From Operating Activities	$68.10M	$138.6M	$136.7M
YoY Change	-50.87%	1.39%	61.58%
INVESTING ACTIVITIES
Capital Expenditures	-$17.20M	-$18.60M	-$26.00M
YoY Change	-7.53%	-28.46%	16.07%
Acquisitions
YoY Change
Other Investing Activities	$13.00M	-$35.40M	$32.40M
YoY Change	-136.72%	-209.26%	-28.0%
Cash From Investing Activities	-$4.200M	-$54.00M	$6.400M
YoY Change	-92.22%	-943.75%	-71.68%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-42.60M	-2.700M	-219.7M
YoY Change	1477.78%	-98.77%	1730.83%
NET CHANGE
Cash From Operating Activities	68.10M	138.6M	136.7M
Cash From Investing Activities	-4.200M	-54.00M	6.400M
Cash From Financing Activities	-42.60M	-2.700M	-219.7M
Net Change In Cash	21.30M	81.90M	-76.60M
YoY Change	-73.99%	-206.92%	-180.46%
FREE CASH FLOW
Cash From Operating Activities	$68.10M	$138.6M	$136.7M
Capital Expenditures	-$17.20M	-$18.60M	-$26.00M
Free Cash Flow	$85.30M	$157.2M	$162.7M
YoY Change	-45.74%	-3.38%	52.06%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017	cien	Adjustments To Additional Paid In Capital Reversal Of Deferred Tax Asset Valuation Allowance AdjustmentsToAdditionalPaidInCapitalReversalOfDeferredTaxAssetValuationAllowance	25964000	USD
CY2018	cien	Adjustmentsto Additional Paidin Capital Embedded Derivative Liability AdjustmentstoAdditionalPaidinCapitalEmbeddedDerivativeLiability	-152142000	USD
CY2016	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	78298000	USD
CY2016	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	78300000	USD
CY2017	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	45713000	USD
CY2017	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	45700000	USD
CY2018	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	25800000	USD
CY2018	cien	Amortization Of Intangible Assets Excluding Amortization Included In Property Plant And Equipment AmortizationOfIntangibleAssetsExcludingAmortizationIncludedInPropertyPlantAndEquipment	25806000	USD
CY2017Q4	cien	Cumulative Shares Repurchased Excluding Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Shares CumulativeSharesRepurchasedExcludingSharesPurchasedforTaxWithholdingsforSharebasedCompensationShares	0	shares
CY2018Q4	cien	Cumulative Shares Repurchased Excluding Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Shares CumulativeSharesRepurchasedExcludingSharesPurchasedforTaxWithholdingsforSharebasedCompensationShares	4290801	shares
CY2017Q4	cien	Cumulative Shares Repurchased Excluding Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Value CumulativeSharesRepurchasedExcludingSharesPurchasedforTaxWithholdingsforSharebasedCompensationValue	0	USD
CY2018Q4	cien	Cumulative Shares Repurchased Excluding Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Value CumulativeSharesRepurchasedExcludingSharesPurchasedforTaxWithholdingsforSharebasedCompensationValue	110981000	USD
CY2017Q4	cien	Cumulative Shares Repurchased Excluding Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Weighted Average Price Per Share CumulativeSharesRepurchasedExcludingSharesPurchasedforTaxWithholdingsforSharebasedCompensationWeightedAveragePricePerShare	0.00
CY2018Q4	cien	Cumulative Shares Repurchased Excluding Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Weighted Average Price Per Share CumulativeSharesRepurchasedExcludingSharesPurchasedforTaxWithholdingsforSharebasedCompensationWeightedAveragePricePerShare	25.86
CY2017Q4	cien	Deferred Tax Asset Operating Loss And Tax Credit Carryforwards DeferredTaxAssetOperatingLossAndTaxCreditCarryforwards	803622000	USD
CY2018Q4	cien	Deferred Tax Asset Operating Loss And Tax Credit Carryforwards DeferredTaxAssetOperatingLossAndTaxCreditCarryforwards	483495000	USD
CY2016	cien	Depreciation Of Product Demonstration Equipment DepreciationOfProductDemonstrationEquipment	10700000	USD
CY2017	cien	Depreciation Of Product Demonstration Equipment DepreciationOfProductDemonstrationEquipment	10000000	USD
CY2018	cien	Depreciation Of Product Demonstration Equipment DepreciationOfProductDemonstrationEquipment	9000000	USD
CY2016	cien	Dilutive Gain Losson Embedded Derivative Net DilutiveGainLossonEmbeddedDerivativeNet	0	USD
CY2017	cien	Dilutive Gain Losson Embedded Derivative Net DilutiveGainLossonEmbeddedDerivativeNet	0	USD
CY2018	cien	Dilutive Gain Losson Embedded Derivative Net DilutiveGainLossonEmbeddedDerivativeNet	-12894000	USD
CY2018	cien	Earnings Per Share Diluted Gain Losson Embedded Derivative Net EarningsPerShareDilutedGainLossonEmbeddedDerivativeNet	-0.09
CY2016	cien	Effective Income Tax Rate Reconciliation Changein Tax Rate Deferred Tax Asset Tax Cutsand Jobs Act Percent EffectiveIncomeTaxRateReconciliationChangeinTaxRateDeferredTaxAssetTaxCutsandJobsActPercent	0.0000
CY2017	cien	Effective Income Tax Rate Reconciliation Changein Tax Rate Deferred Tax Asset Tax Cutsand Jobs Act Percent EffectiveIncomeTaxRateReconciliationChangeinTaxRateDeferredTaxAssetTaxCutsandJobsActPercent	0.0000
CY2018	cien	Effective Income Tax Rate Reconciliation Changein Tax Rate Deferred Tax Asset Tax Cutsand Jobs Act Percent EffectiveIncomeTaxRateReconciliationChangeinTaxRateDeferredTaxAssetTaxCutsandJobsActPercent	2.9456
CY2016	cien	Effective Income Tax Rate Reconciliation Embedded Derivative Percent EffectiveIncomeTaxRateReconciliationEmbeddedDerivativePercent	0.0000
CY2017	cien	Effective Income Tax Rate Reconciliation Embedded Derivative Percent EffectiveIncomeTaxRateReconciliationEmbeddedDerivativePercent	0.0000
CY2018	cien	Effective Income Tax Rate Reconciliation Embedded Derivative Percent EffectiveIncomeTaxRateReconciliationEmbeddedDerivativePercent	0.0190
CY2016	cien	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost And Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCostAndOther	0.0516
CY2017	cien	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost And Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCostAndOther	0.0345
CY2018	cien	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost And Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCostAndOther	0.0339
CY2016	cien	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Act Transition Taxon Accumulated Foreign Earnings Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActTransitionTaxonAccumulatedForeignEarningsPercent	0.0000
CY2017	cien	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Act Transition Taxon Accumulated Foreign Earnings Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActTransitionTaxonAccumulatedForeignEarningsPercent	0.0000
CY2018	cien	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Act Transition Taxon Accumulated Foreign Earnings Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActTransitionTaxonAccumulatedForeignEarningsPercent	0.2323
CY2017	cien	Finite Lived Intangible Asset Fully Amortized Amount FiniteLivedIntangibleAssetFullyAmortizedAmount	34000000	USD
CY2018	cien	Finite Lived Intangible Asset Fully Amortized Amount FiniteLivedIntangibleAssetFullyAmortizedAmount	5000000	USD
CY2016	cien	Gain Losson Extinguishmentand Restructuringof Debt GainLossonExtinguishmentandRestructuringofDebt	-226000	USD
CY2017	cien	Gain Losson Extinguishmentand Restructuringof Debt GainLossonExtinguishmentandRestructuringofDebt	-3657000	USD
CY2018	cien	Gain Losson Extinguishmentand Restructuringof Debt GainLossonExtinguishmentandRestructuringofDebt	-13887000	USD
CY2018Q4	cien	Government Grants Maximum Amount GovernmentGrantsMaximumAmount	57600000	CAD
CY2018Q4	cien	Government Grants Maximum Amount GovernmentGrantsMaximumAmount	45000000	USD
CY2018	cien	Government Grants Numberof Counterparties GovernmentGrantsNumberofCounterparties	3	government_entity
CY2016	cien	Interest And Other Income Loss Net InterestAndOtherIncomeLossNet	-12569000	USD
CY2017	cien	Interest And Other Income Loss Net InterestAndOtherIncomeLossNet	913000	USD
CY2018	cien	Interest And Other Income Loss Net InterestAndOtherIncomeLossNet	-12029000	USD
CY2016	cien	Inventory Valuation Reserves Disposals InventoryValuationReservesDisposals	24211000	USD
CY2017	cien	Inventory Valuation Reserves Disposals InventoryValuationReservesDisposals	46756000	USD
CY2018	cien	Inventory Valuation Reserves Disposals InventoryValuationReservesDisposals	30883000	USD
CY2018	cien	Maintenance Spare Parts Amortization Period MaintenanceSparePartsAmortizationPeriod	P4Y
CY2017Q4	cien	Maintenance Spares Inventory Net Non Current MaintenanceSparesInventoryNetNonCurrent	46872000	USD
CY2018Q4	cien	Maintenance Spares Inventory Net Non Current MaintenanceSparesInventoryNetNonCurrent	45700000	USD
CY2018Q4	cien	Maintenance Spares Inventory Net Non Current MaintenanceSparesInventoryNetNonCurrent	45679000	USD
CY2016	cien	Noncashor Part Noncash Acquisition Contingent Consideration NoncashorPartNoncashAcquisitionContingentConsideration	0	USD
CY2017	cien	Noncashor Part Noncash Acquisition Contingent Consideration NoncashorPartNoncashAcquisitionContingentConsideration	0	USD
CY2018	cien	Noncashor Part Noncash Acquisition Contingent Consideration NoncashorPartNoncashAcquisitionContingentConsideration	10900000	USD
CY2018Q4	cien	Number Of Geographic Regions NumberOfGeographicRegions	4	region
CY2018	cien	One Time Employee Termination Benefits Related Service Period OneTimeEmployeeTerminationBenefitsRelatedServicePeriod	P60D
CY2017Q4	cien	Other Obligations Noncurrent OtherObligationsNoncurrent	7068000	USD
CY2018Q4	cien	Other Obligations Noncurrent OtherObligationsNoncurrent	10380000	USD
CY2016	cien	Payments To Acquire Cost Method Investments PaymentsToAcquireCostMethodInvestments	4000000	USD
CY2017	cien	Payments To Acquire Cost Method Investments PaymentsToAcquireCostMethodInvestments	0	USD
CY2018	cien	Payments To Acquire Cost Method Investments PaymentsToAcquireCostMethodInvestments	1767000	USD
CY2016	cien	Paymentsfor Make Whole Provisionof Convertible Debt PaymentsforMakeWholeProvisionofConvertibleDebt	0	USD
CY2017	cien	Paymentsfor Make Whole Provisionof Convertible Debt PaymentsforMakeWholeProvisionofConvertibleDebt	0	USD
CY2018	cien	Paymentsfor Make Whole Provisionof Convertible Debt PaymentsforMakeWholeProvisionofConvertibleDebt	13453000	USD
CY2017Q4	cien	Product Demonstration Equipment Net ProductDemonstrationEquipmentNet	40713000	USD
CY2018Q4	cien	Product Demonstration Equipment Net ProductDemonstrationEquipmentNet	37623000	USD
CY2018	cien	Stock Repurchased During Period Excluding Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Shares StockRepurchasedDuringPeriodExcludingSharesPurchasedforTaxWithholdingsforSharebasedCompensationShares	4290801	shares
CY2018	cien	Stock Repurchased During Period Excluding Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Value StockRepurchasedDuringPeriodExcludingSharesPurchasedforTaxWithholdingsforSharebasedCompensationValue	110981000	USD
CY2018	cien	Stock Repurchased During Period Excluding Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Weighted Average Price Per Share StockRepurchasedDuringPeriodExcludingSharesPurchasedforTaxWithholdingsforSharebasedCompensationWeightedAveragePricePerShare	25.86
CY2018	cien	Stock Repurchased During Period Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Value StockRepurchasedDuringPeriodSharesPurchasedforTaxWithholdingsforSharebasedCompensationValue	4757000	USD
CY2018	cien	Stock Repurchased During Period Shares Purchasedfor Tax Withholdingsfor Sharebased Compensation Value StockRepurchasedDuringPeriodSharesPurchasedforTaxWithholdingsforSharebasedCompensationValue	4800000	USD
CY2018Q4	cien	Tax Cuts And Jobs Act Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Related Transactions For Provisional Income Tax Expense TaxCutsAndJobsActIncompleteAccountingTransitionTaxForAccumulatedForeignEarningsRelatedTransactionsForProvisionalIncomeTaxExpense	10500000	USD
CY2018	cien	Tax Cuts And Jobs Act Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Related Transactions For Provisional Income Tax Expense TaxCutsAndJobsActIncompleteAccountingTransitionTaxForAccumulatedForeignEarningsRelatedTransactionsForProvisionalIncomeTaxExpense	34600000	USD
CY2018	cien	Tax Cutsand Jobs Act Changein Tax Rate Deferred Tax Asset Income Tax Expense TaxCutsandJobsActChangeinTaxRateDeferredTaxAssetIncomeTaxExpense	438200000	USD
CY2018Q4	cien	Tax Cutsand Jobs Act Transition Taxfor Accumulated Foreign Earnings Liability TaxCutsandJobsActTransitionTaxforAccumulatedForeignEarningsLiability	8600000	USD
CY2017Q4	cien	Tenant Improvement Accrual Noncurrent TenantImprovementAccrualNoncurrent	8162000	USD
CY2018Q4	cien	Tenant Improvement Accrual Noncurrent TenantImprovementAccrualNoncurrent	7244000	USD
CY2016	cien	Valuation Allowance Deferred Tax Asset Additions ValuationAllowanceDeferredTaxAssetAdditions	0	USD
CY2017	cien	Valuation Allowance Deferred Tax Asset Additions ValuationAllowanceDeferredTaxAssetAdditions	0	USD
CY2018	cien	Valuation Allowance Deferred Tax Asset Additions ValuationAllowanceDeferredTaxAssetAdditions	23720000	USD
CY2016	cien	Valuation Allowance Deferred Tax Asset Deductions ValuationAllowanceDeferredTaxAssetDeductions	5892000	USD
CY2017	cien	Valuation Allowance Deferred Tax Asset Deductions ValuationAllowanceDeferredTaxAssetDeductions	1303882000	USD
CY2018	cien	Valuation Allowance Deferred Tax Asset Deductions ValuationAllowanceDeferredTaxAssetDeductions	66968000	USD
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--10-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-10-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0000936395
CY2018Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	156481822	shares
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2018Q2	dei	Entity Public Float EntityPublicFloat	3700000000	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	CIENA CORP
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
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CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	340582000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	622183000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	786502000	USD
CY2017Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	15445000	USD
CY2018Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	15894000	USD
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	322934000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	340075000	USD
CY2017Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	113272000	USD
CY2018Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	140277000	USD
CY2017Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	39778000	USD
CY2018Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	42507000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	342451000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	378810000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-11017000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5780000	USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	6810182000	USD
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CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	48360000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	52972000	USD
CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2963000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	3963000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	17580000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	17378000	USD
CY2016	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	701000	USD
CY2017	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	4604000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	2902000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	61508000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	33029000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15737000	USD
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	28435000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	958000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	16021000	shares
CY2017Q4	us-gaap	Assets Assets	3951711000	USD
CY2018Q4	us-gaap	Assets Assets	3756523000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	2006311000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	2142602000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	208357000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	59029000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	58970000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	149328000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	148981000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	207951000	USD
CY2016	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	4613000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	5111000	USD
CY2016	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	15030000	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	6214000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	5118000	USD
CY2017Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	3772000	USD
CY2018Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	3547000	USD
CY2017Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	73407000	USD
CY2018Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	68245000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	115283000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	8654000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	8090000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	7883000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	7569000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	7674000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	75413000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	43491000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	71792000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	790971000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	777615000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	640513000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	745423000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-13356000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-137102000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	104910000	USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	290000000	shares
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	290000000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	143043227	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	154318531	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	143043227	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	154318531	shares
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	1430000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	1543000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	70381000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1275265000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-339453000	USD
CY2016	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	39914000	USD
CY2017	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	0	USD
CY2018	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	0	USD
CY2017Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	352293000	USD
CY2018Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	7000000	USD
CY2016	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1438997000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1555901000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1779596000	USD
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	62123000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	8327000	USD
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	9969000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	14563000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	13294000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	15250000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	20905000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	29840000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5281000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6342000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	8219000	USD
CY2017Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	1041000	USD
CY2018Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	720000	USD
CY2017Q4	us-gaap	Deferred Costs Current DeferredCostsCurrent	26934000	USD
CY2018Q4	us-gaap	Deferred Costs Current DeferredCostsCurrent	19342000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1047699000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	475951000	USD
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1116000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1604000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-4118000	USD
CY2017Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	1155104000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	745039000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1116000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1126732000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	463631000	USD
CY2016	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-1116000	USD
CY2017	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-1126732000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	463631000	USD
CY2017Q4	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	7267000	USD
CY2018Q4	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	6750000	USD
CY2017Q4	us-gaap	Deferred Revenue DeferredRevenue	185007000	USD
CY2018Q4	us-gaap	Deferred Revenue DeferredRevenue	169457000	USD
CY2017Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	102418000	USD
CY2018Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	111134000	USD
CY2017Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	82589000	USD
CY2018Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	58323000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-77429000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8202000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1341002000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	887689000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1155104000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	745039000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	29398000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9397000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	451385000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	353838000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	56597000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	40959000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1495672000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1489780000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	185898000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	142650000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	142700000	USD
CY2018Q4	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Undistributed Earnings Of Foreign Subsidiaries DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries	23000000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0	USD
CY2016	us-gaap	Depreciation Depreciation	63394000	USD
CY2017	us-gaap	Depreciation Depreciation	77189000	USD
CY2018	us-gaap	Depreciation Depreciation	84214000	USD
CY2017Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	227000	USD
CY2018Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	133000	USD
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.89
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.40
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.53
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.49
CY2016	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-2389000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	494000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-5856000	USD
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.1630
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-7.0829
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	3.3168
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2341
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.0733
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-7.3997
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.1195
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.0311
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.0035
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.0122
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.0103
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.0667
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.0488
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0400
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0229
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.0016
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.2261
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.1538
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.0880
CY2017Q4	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Liability EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability	0	USD
CY2018Q4	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Liability EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability	164212000	USD
CY2018Q3	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Liability EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability	152100000	USD
CY2016	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	0	USD
CY2017	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	0	USD
CY2018	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-12100000	USD
CY2018	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-12070000	USD
CY2016	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	7000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	-77000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	101000	USD
CY2018Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	77300000	USD
CY2017Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	6000000	USD
CY2018Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	8100000	USD
CY2018Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	8056000	USD
CY2018	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P7Y
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	30841000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	582736000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	603541000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	13159000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	35375000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	10011000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	24820000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	34019000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	148225000	USD
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	5870000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-4376000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-19434000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-19400000	USD
CY2016	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-23355000	USD
CY2016	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-23400000	USD
CY2017	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-1200000	USD
CY2017	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-1198000	USD
CY2018	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	6800000	USD
CY2018	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	6791000	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-10039000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	132828000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	142604000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	160133000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	267458000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	297968000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	30757000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-247000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018Q4	us-gaap	Grants Receivable GrantsReceivable	7500000	CAD
CY2018Q4	us-gaap	Grants Receivable GrantsReceivable	5700000	USD
CY2016	us-gaap	Gross Profit GrossProfit	1161576000	USD
CY2017	us-gaap	Gross Profit GrossProfit	1245786000	USD
CY2018	us-gaap	Gross Profit GrossProfit	1314690000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	58237000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	114242000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	106972000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	28481000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	41884000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	41809000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	86718000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	156126000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	148781000	USD
CY2016	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	1200000	USD
CY2017	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	600000	USD
CY2018	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	1100000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14134000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1105827000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	493471000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	493500000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	15268000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	22136000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26900000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	7153000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	33897000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	85798000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	26074000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	66123000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	168357000	USD
CY2016	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-9585000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	1964000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-19344000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	53000000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	91567000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	27445000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-30047000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	33834000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	21425000	USD
CY2016	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-11000	USD
CY2017	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	54000	USD
CY2018	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-117000	USD
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1311000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1354000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2017Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	683733000	USD
CY2018Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	751766000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	100997000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	148225000	USD
CY2016	us-gaap	Interest Expense InterestExpense	56656000	USD
CY2017	us-gaap	Interest Expense InterestExpense	55852000	USD
CY2018	us-gaap	Interest Expense InterestExpense	55249000	USD
CY2016	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	4058000	USD
CY2017	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	6579000	USD
CY2018	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	13703000	USD
CY2016	us-gaap	Interest Paid InterestPaid	46897000	USD
CY2017	us-gaap	Interest Paid InterestPaid	47235000	USD
CY2018	us-gaap	Interest Paid InterestPaid	44750000	USD
CY2017Q4	us-gaap	Interest Payable Current InterestPayableCurrent	3612000	USD
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	1072000	USD
CY2017Q4	us-gaap	Interest Rate Cash Flow Hedge Asset At Fair Value InterestRateCashFlowHedgeAssetAtFairValue	218000	USD
CY2018Q4	us-gaap	Interest Rate Cash Flow Hedge Asset At Fair Value InterestRateCashFlowHedgeAssetAtFairValue	779000	USD
CY2017Q4	us-gaap	Interest Rate Cash Flow Hedge Liability At Fair Value InterestRateCashFlowHedgeLiabilityAtFairValue	0	USD
CY2018Q4	us-gaap	Interest Rate Cash Flow Hedge Liability At Fair Value InterestRateCashFlowHedgeLiabilityAtFairValue	10900000	USD
CY2017Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	185488000	USD
CY2018Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	188575000	USD
CY2017Q4	us-gaap	Inventory Gross InventoryGross	318349000	USD
CY2018Q4	us-gaap	Inventory Gross InventoryGross	313689000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	267143000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	262751000	USD
CY2017Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	52898000	USD
CY2018Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	67468000	USD
CY2015Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	53001000	USD
CY2016Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	62503000	USD
CY2017Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	51206000	USD
CY2018Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	50938000	USD
CY2017Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	18623000	USD
CY2018Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	9589000	USD
CY2016	us-gaap	Inventory Write Down InventoryWriteDown	33713000	USD
CY2016	us-gaap	Inventory Write Down InventoryWriteDown	33700000	USD
CY2017	us-gaap	Inventory Write Down InventoryWriteDown	35500000	USD
CY2017	us-gaap	Inventory Write Down InventoryWriteDown	35459000	USD
CY2018	us-gaap	Inventory Write Down InventoryWriteDown	30615000	USD
CY2018	us-gaap	Inventory Write Down InventoryWriteDown	30600000	USD
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	26600000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	30900000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	24100000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	1815369000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	1827189000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3951711000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3756523000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1037743000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	963003000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	583688000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	686450000	USD
CY2017Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	49783000	USD
CY2018Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	58970000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-4228000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-311051000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-99229000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-296259000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-61427000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-19266000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	289520000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	234882000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	229261000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	72584000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1261953000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-344690000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	77385000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1278721000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-357584000	USD
CY2017Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	9655000	USD
CY2018Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	25716000	USD
CY2017Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	2049000	USD
CY2018Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	626000	USD
CY2017Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	1052000	USD
CY2018Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	0	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	156169000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	214722000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	229946000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	150608000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	28912000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	13142000	USD
CY2016	us-gaap	Operating Expenses OperatingExpenses	1005407000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	1031064000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	1084744000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	15839000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	21320000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	24348000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	47047000	USD
CY2018Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	1270000000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	120044000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	107932000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	8410000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	16418000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	63593000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	71652000	USD
CY2016	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	217000	USD
CY2017	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-590000	USD
CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	26000	USD
CY2016	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-1152000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	8012000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	686000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2203000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	13312000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5237000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2203000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	13312000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5237000	USD
CY2017Q4	us-gaap	Other Inventory Capitalized Costs OtherInventoryCapitalizedCosts	61340000	USD
CY2018Q4	us-gaap	Other Inventory Capitalized Costs OtherInventoryCapitalizedCosts	48057000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	111349000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	119413000	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-24929000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-22417000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-21685000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	858000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-92000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1019000	USD
CY2017Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	26114000	USD
CY2018Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	32987000	USD
CY2016	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	18506000	USD
CY2017	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	2810000	USD
CY2018	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	-9385000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	110981000	USD
CY2016	us-gaap	Payments For Restructuring PaymentsForRestructuring	3374000	USD
CY2017	us-gaap	Payments For Restructuring PaymentsForRestructuring	10166000	USD
CY2018	us-gaap	Payments For Restructuring PaymentsForRestructuring	17835000	USD
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3987000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	722000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1936000	USD
CY2016	us-gaap	Payments Of Debt Restructuring Costs PaymentsOfDebtRestructuringCosts	0	USD
CY2016	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2017	us-gaap	Payments Of Debt Restructuring Costs PaymentsOfDebtRestructuringCosts	93625000	USD
CY2018	us-gaap	Payments Of Debt Restructuring Costs PaymentsOfDebtRestructuringCosts	0	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4757000	USD
CY2016	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	365191000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	299038000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	286824000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	32000000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	82670000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	107185000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	94600000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	67616000	USD
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	197339000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	198945000	USD
CY2017Q4	us-gaap	Prepaid Taxes PrepaidTaxes	91647000	USD
CY2018Q4	us-gaap	Prepaid Taxes PrepaidTaxes	82518000	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	23091000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	20412000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	23127000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	248750000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	305125000	USD
CY2016	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	230612000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	335075000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	410109000	USD
CY2015Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	56654000	USD
CY2016Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	52324000	USD
CY2017Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	42456000	USD
CY2018Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	44740000	USD
CY2016	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	19813000	USD
CY2017	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	17833000	USD
CY2018	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	18708000	USD
CY2016	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-5300000	USD
CY2017	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-9700000	USD
CY2016	us-gaap	Product Warranty Expense ProductWarrantyExpense	15483000	USD
CY2017	us-gaap	Product Warranty Expense ProductWarrantyExpense	7965000	USD
CY2018	us-gaap	Product Warranty Expense ProductWarrantyExpense	20992000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	650916000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	875000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	276000	shares
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	670877000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	308465000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	292067000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	292100000	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1701000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	18221000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2700000	USD
CY2016	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	5966000	USD
CY2017	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	3562000	USD
CY2018	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	3624000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	266116000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	233554000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	292730000	USD
CY2016	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	451794000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	475329000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	491564000	USD
CY2016	us-gaap	Restructuring Charges RestructuringCharges	4933000	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	11315000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	18743000	USD
CY2015Q4	us-gaap	Restructuring Reserve RestructuringReserve	1279000	USD
CY2016Q4	us-gaap	Restructuring Reserve RestructuringReserve	2838000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	2939000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	3847000	USD
CY2017	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	-1048000	USD
CY2018Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	2610000	USD
CY2018Q4	us-gaap	Restructuring Reserve Noncurrent RestructuringReserveNoncurrent	1237000	USD
CY2016	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	4933000	USD
CY2017	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	23933000	USD
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	18139000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-4664253000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-4947652000	USD
CY2016	us-gaap	Revenues Revenues	2600573000	USD
CY2017	us-gaap	Revenues Revenues	2801687000	USD
CY2018	us-gaap	Revenues Revenues	3094286000	USD
CY2016	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	349731000	USD
CY2017	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	356169000	USD
CY2018	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	394060000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	51993000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	48360000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	52972000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	35.46
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	420000	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2018	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	262103000	USD
CY2018Q4	us-gaap	Short Term Investments ShortTermInvestments	148981000	USD
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	179000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	12.75
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.00
CY2017Q4	us-gaap	Short Term Investments ShortTermInvestments	279133000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	30.19
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	33.52
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	23091000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	20412000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	23127000	USD
CY2017Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	300000000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2136342000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1929334000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	620876000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	766341000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2136342000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1929334000	USD
CY2018Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	100000000	USD
CY2017Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	26100000	USD
CY2018Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	40900000	USD
CY2018Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	336000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	27536000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	30668000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	141582000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	96363000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	46400000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	4000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	3500000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2654000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	111412000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2482000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2187000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	122000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1709000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	620000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1301000	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	150704000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	169919000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	143738000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	138312000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141997000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	143738000	shares
CY2018	us-gaap	Fiscal Period FiscalPeriod	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:8px;text-align:left;text-indent:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Ciena has a 52 or 53 week fiscal year, which ends on the Saturday nearest to the last day of October in each year (</font><font style="font-family:inherit;font-size:10pt;">November 3, 2018</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">October 28, 2017</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">October 29, 2016</font><font style="font-family:inherit;font-size:10pt;"> for the periods reported). </font><font style="font-family:inherit;font-size:10pt;">Fiscal 2018</font><font style="font-family:inherit;font-size:10pt;"> consisted of a 53-week fiscal year. </font><font style="font-family:inherit;font-size:10pt;">Fiscal 2017</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">fiscal 2016</font><font style="font-family:inherit;font-size:10pt;"> each consisted of a 52-week fiscal year. For purposes of financial statement presentation, each fiscal year is described as having ended on October 31.</font></div></div>
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;text-indent:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">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.</font></div></div>

Files In Submission

Name	View Source	Status
0000936395-18-000048-index-headers.html	Edgar Link	pending
0000936395-18-000048-index.html	Edgar Link	pending
0000936395-18-000048.txt	Edgar Link	pending
0000936395-18-000048-xbrl.zip	Edgar Link	pending
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cien-20181031.xml	Edgar Link	completed
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cien-20181031_def.xml	Edgar Link	unprocessable
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cien-20181031_pre.xml	Edgar Link	unprocessable
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$CIEN
CIENA CORP Stock $cien

2018 Q4 Form 10-K Financial Statement

#000093639518000048 Filed on December 21, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CIEN CIENA CORP Stock $cien

2018 Q4 Form 10-K Financial Statement

#000093639518000048 Filed on December 21, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CIEN
CIENA CORP Stock $cien