XML 83 R68.htm IDEA: XBRL DOCUMENT
v3.23.3

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

X
- Definition Grant Subsidies To Offset Expenses + References No definition available. + Details
Name: | cien_GrantSubsidiesToOffsetExpenses
Namespace Prefix: | cien_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_UnusualOrInfrequentItemLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=cien_GrantsCanadaEmergencyWageSubsidyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=cien_ProductsRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=cien_ServicesRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_ResearchAndDevelopmentExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingAndMarketingExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OperatingExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |