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v3.20.4

Short-Term and Long-Term Debt (Tables) | 12 Months Ended
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Oct. 31, 2020
Debt Disclosure [Abstract] |
Schedule of carrying values and estimated fair values of debt instruments | The net carrying values of Ciena’s term loan were comprised of the following for the fiscal periods indicated (in thousands):
|  | October 31, 2020 |  | November 2, 2019
|  | Principal Balance |  | Unamortized Discount |  | Deferred Debt Issuance Costs |  | Net Carrying Value |  | Net Carrying Value
New 2025 Term Loan |  | $ | 687,802 |  |  | $ | (1,577) |  |  | $ | (2,939) |  |  | $ | 683,286 |  |  | $ | — |
Old 2025 Term Loan |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 687,406 |

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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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