Goodwill (Tables)

12 Months Ended

Oct. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill Allocated by Reportable Segments

The following table presents the goodwill allocated to Ciena’s operating segments as of October 31, 2019 and October 31, 2018, as well as the changes to goodwill during fiscal 2019 (in thousands):

	Balance at October 31, 2018		Reallocation			Acquisitions		Impairments		Translation			Balance at October 31, 2019
Software and Software Related Services	$	232,185	$	(232,185	)	$	—	$	—	$	—		$	—
Platform Software and Services	—		156,191			—		—		—			156,191
Blue Planet Automation Software and Services	—		75,994			—		—		—			75,994
Networking Platforms	65,783		—			—		—		(31		)	65,752
Total	$	297,968	$	—		$	—	$	—	$	(31	)	$	297,937