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v3.20.4

Segment and Entity Wide Disclosures - Entity Wide Reporting (Details) $ in Thousands | 12 Months Ended
--- | ---
Oct. 31, 2020 USD ($) region | Nov. 02, 2019 USD ($) | Nov. 03, 2018 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Number of geographic regions | region | 3 |  |
Ciena's geographic distribution of revenue |  |  |
Revenues | $ 3,532,157 | $ 3,572,131 | $ 3,094,286
Ciena's geographic distribution of equipment, furniture and fixtures |  |  |
Equipment, building, furniture and fixtures, net | 329,403 | 286,884 |
Americas |  |  |
Ciena's geographic distribution of revenue |  |  |
Revenues | 2,469,278 | 2,503,913 | 2,026,627
Canada |  |  |
Ciena's geographic distribution of equipment, furniture and fixtures |  |  |
Equipment, building, furniture and fixtures, net | 214,188 | 211,901 |
United States |  |  |
Ciena's geographic distribution of revenue |  |  |
Revenues | 2,250,000 | 2,250,000 | 1,770,000
Ciena's geographic distribution of equipment, furniture and fixtures |  |  |
Equipment, building, furniture and fixtures, net | 65,321 | 58,119 |
EMEA |  |  |
Ciena's geographic distribution of revenue |  |  |
Revenues | 591,468 | 566,718 | 464,876
APAC |  |  |
Ciena's geographic distribution of revenue |  |  |
Revenues | 471,411 | 501,500 | $ 602,783
Other International |  |  |
Ciena's geographic distribution of equipment, furniture and fixtures |  |  |
Equipment, building, furniture and fixtures, net | $ 49,894 | $ 16,864 |

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