Segments and Entity-Wide Disclosures - Other Intangibles Assets, Goodwill and Maintenance Spares (Details) - USD ($) $ in Thousands	Jan. 30, 2021	Oct. 31, 2020
Segment Reporting Information [Line Items]
Other intangible assets, net	$ 91,516
Goodwill	311,294	$ 310,847
Maintenance spares, net	63,008
Operating Segments | Networking Platforms
Segment Reporting Information [Line Items]
Other intangible assets, net	12,924
Goodwill	66,054
Maintenance spares, net	0
Operating Segments | Platform Software and Services
Segment Reporting Information [Line Items]
Other intangible assets, net	0
Goodwill	156,191
Maintenance spares, net	0
Operating Segments | Blue Planet Automation Software and Services
Segment Reporting Information [Line Items]
Other intangible assets, net	78,592
Goodwill	89,049
Maintenance spares, net	0
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Other intangible assets, net	0
Goodwill	0
Maintenance spares, net	$ 63,008