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SHORT-TERM AND LONG-TERM DEBT (Tables) | 9 Months Ended
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Jul. 31, 2021
Debt Disclosure [Abstract] |
Schedule of Carrying Values and Estimated Fair Values of Convertible Notes | The net carrying value of Ciena’s term loan was comprised of the following for the periods indicated (in thousands):
|  | July 31, 2021 |  | October 31, 2020
|  | Principal Balance |  | Unamortized Discount |  | Deferred Debt Issuance Costs |  | Net Carrying Value |  | Net Carrying Value
2025 Term Loan |  | $ | 682,605 |  |  | $ | (1,332) |  |  | $ | (2,488) |  |  | $ | 678,785 |  |  | $ | 683,286 |

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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