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GOODWILL (Tables)
 6 Months Ended
Apr. 29, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following table presents the goodwill allocated to Ciena’s operating segments as of April 29, 2023 and October 29, 2022, as well as the changes to goodwill during first six months of fiscal 2023 (in thousands):
Balance at October 29, 2022AcquisitionsImpairmentsTranslationBalance at April 29, 2023
Platform Software and Services$156,191 $— $— $— $156,191 
Blue Planet Automation Software and Services89,049 — — — 89,049 
Networking Platforms83,082 117,997 — 45 201,124 
Total$328,322 $117,997 $— $45 $446,364