Subsequent Event
12 Months Ended
Oct. 31, 2015
Subsequent Events [Abstract]  
SUBSEQUENT EVENT
SUBSEQUENT EVENT

During the first quarter of fiscal 2016, Ciena reorganized its internal organizational structure, management of its business and the reporting of its operating segments. In connection with the creation of its new Chief Operating Officer organization, Ciena has reorganized the management of its business resulting in three operating segments: Networking Platforms; Software and Software-Related Services; and Global Services. As a result of this reorganization, the Converged Packet-Optical, Packet Networking and Optical Transport segments were realigned to form a new Networking Platforms segment under a single operating segment manager. Ciena's existing Software and Service operating segment was reorganized into two separate operating segments; Software and Software-Related Services and Global Services. The Software and Software-Related Services segment will include sales of Ciena's network virtualization, management, control and orchestration software solutions and software-related services, including subscription, installation, support and consulting services. The Global Services segment will include sales of a broad range of services for consulting and network design, installation and deployment, maintenance support and training activities.