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SEGMENTS AND ENTITY-WIDE DISCLOSURES
 6 Months Ended
May 03, 2025
Segment Reporting [Abstract]  
SEGMENTS AND ENTITY-WIDE DISCLOSURES SEGMENTS AND ENTITY-WIDE DISCLOSURES
Segment Reporting
Ciena has the following operating segments for reporting purposes: (i) Networking Platforms; (ii) Platform Software and Services; (iii) Blue Planet Automation Software and Services; and (iv) Global Services.

Segment Profit (Loss)
Segment profit (loss) is determined based on internal performance measures used by Ciena’s chief executive officer to assess the performance of each operating segment in a given period. In connection with that assessment, the chief executive officer excludes the following items: selling and marketing costs; general and administrative costs; significant asset impairments and restructuring costs; amortization of intangible assets; interest and other income, net; interest expense; loss on extinguishment and modification of debt; and provision for income taxes.
The table below sets forth Ciena’s segment profit (loss) and the reconciliation to net income (loss) for the periods presented (in thousands):
Quarter EndedSix Months Ended
 May 3,April 27,May 3,April 27,
 2025202420252024
Segment profit (loss):
Networking Platforms$133,712 $96,566 $300,791 $280,341 
Platform Software and Services50,423 54,037 113,548 112,041 
Blue Planet Automation Software and Services4,291 (7,763)8,867 (14,832)
Global Services49,544 50,441 93,922 95,424 
Total segment profit237,970 193,281 517,128 472,974 
Less: Non-performance operating expenses 
  Selling and marketing139,683 124,071 276,187 252,229 
  General and administrative56,952 49,573 110,854 104,256 
  Significant asset impairments and restructuring costs1,948 15,655 3,492 20,626 
  Amortization of intangible assets6,545 7,947 13,090 15,199 
Add: Other non-performance financial items
Interest and other income, net7,871 11,797 19,449 22,447 
Interest expense(21,697)(23,861)(44,615)(47,637)
Loss on extinguishment and modification of debt— — (729)— 
Less: Provision for income taxes10,047 820 34,069 22,776 
Net income (loss)$8,969 $(16,849)$53,541 $32,698 

Entity-Wide Reporting
Ciena's long-lived assets, including equipment, building, furniture and fixtures, operating ROU assets, finite-lived intangible assets, and maintenance spares, are not reviewed by Ciena's chief operating decision maker for purposes of evaluating performance and allocating resources. As of May 3, 2025, equipment, building, furniture and fixtures, net, totaled $349.3 million, and operating ROU assets totaled $38.7 million both of which support asset groups within Ciena’s four operating segments and unallocated selling and general and administrative activities. As of May 3, 2025, finite-lived intangible assets, goodwill, and maintenance spares are assigned to asset groups within the following segments (in thousands):
May 3, 2025
Networking PlatformsPlatform Software and ServicesBlue Planet Automation Software and ServicesGlobal ServicesTotal
Other intangible assets, net$144,673 — 2,786 — $147,459 
Goodwill$199,565 156,191 89,049 — $444,805 
Maintenance spares, net$— — — 88,507 $88,507 
The following table represents Ciena’s geographic distribution of equipment, building, furniture and fixtures, net and operating ROU assets, specifically identifying any country that accounts for at least 10% of the total of these assets. Assets attributable to geographic regions not identified are reflected as “Other International.” For the periods indicated, Ciena’s geographic distribution of equipment, building, furniture and fixtures, net, and operating ROU assets was as follows (in thousands):
May 3,
2025		November 2,
2024
Canada$296,820 $283,760 
United States45,447 49,195 
Other International45,737 32,184 
Total$388,004 $365,139