XML 34 R20.htm IDEA: XBRL DOCUMENT
v3.21.2

EQUIPMENT, BUILDING, FURNITURE AND FIXTURES | 12 Months Ended
--- | ---
Oct. 30, 2021
Property, Plant and Equipment [Abstract] |
EQUIPMENT, BUILDING, FURNITURE AND FIXTURES | EQUIPMENT, BUILDING, FURNITURE AND FIXTURESAs of the dates indicated, equipment, building, furniture and fixtures are comprised of the following (in thousands):
| October 30, 2021 |  | October 31, 2020
Equipment, furniture and fixtures | $ | 599,672 |  |  | $ | 523,231 |
Building subject to finance lease | 76,123 |  |  | 70,791 |
Leasehold improvements | 100,270 |  |  | 89,407 |
| 776,065 |  |  | 683,429 |
Accumulated depreciation and amortization | (491,097) |  |  | (411,052) |
| $ | 284,968 |  |  | $ | 272,377 |
During fiscal 2021, fiscal 2020 and fiscal 2019, Ciena recorded depreciation of equipment, building, furniture and fixtures, and amortization of leasehold improvements of $86.5 million, $84.9 million and $78.8 million, respectively.

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
Name: | us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration