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SEGMENTS AND ENTITY-WIDE DISCLOSURES - Other Intangibles Assets, Goodwill and Maintenance Spares (Details) - USD ($) $ in Thousands | Jul. 31, 2021 | Oct. 31, 2020
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Other intangible assets, net | $ 73,974 |
Goodwill | 311,569 | $ 310,847
Maintenance spares, net | 61,048 |
Networking Platforms |  |
Segment Reporting Information [Line Items] |  |
Other intangible assets, net | 9,865 |
Goodwill | 66,329 |
Maintenance spares, net | 0 |
Platform Software and Services |  |
Segment Reporting Information [Line Items] |  |
Other intangible assets, net | 0 |
Goodwill | 156,191 |
Maintenance spares, net | 0 |
Blue Planet Automation Software and Services |  |
Segment Reporting Information [Line Items] |  |
Other intangible assets, net | 64,109 |
Goodwill | 89,049 |
Maintenance spares, net | 0 |
Global Services |  |
Segment Reporting Information [Line Items] |  |
Other intangible assets, net | 0 |
Goodwill | 0 |
Maintenance spares, net | $ 61,048 |

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