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Goodwill | 12 Months Ended
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Oct. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
GOODWILL | GOODWILL The following table presents the goodwill allocated to Ciena’s operating segments as of October 31, 2020 and November 2, 2019, as well as the changes to goodwill during fiscal 2020 (in thousands):
| Balance at November 2, 2019 |  | Acquisitions |  | Impairments |  | Translation |  | Balance at October 31, 2020
Platform Software and Services | $ | 156,191 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 156,191 |
Blue Planet Automation Software and Services | 75,994 |  |  | 13,055 |  |  | — |  |  | — |  |  | 89,049 |
Networking Platforms | 65,752 |  |  | — |  |  | — |  |  | (145) |  |  | 65,607 |
Total | $ | 297,937 |  |  | $ | 13,055 |  |  | $ | — |  |  | $ | (145) |  |  | $ | 310,847 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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