SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS (Tables)

12 Months Ended

Oct. 29, 2022

Restructuring and Related Activities [Abstract]

Schedule Of activity and balance of the restructuring liability accounts

The following table sets forth the restructuring activity and balance of the restructuring liability accounts, which are included in accrued liabilities and other short-term obligations on Ciena’s Consolidated Balance Sheets, for the fiscal years indicated (in thousands):

	Workforce reduction			Other restructuring activities			Total
Balance at November 2, 2019	$	3,983		$	11,160		$	15,143
Charges	7,282		(1)	15,370		(2)	22,652
Adjustments related to ASC 842	—			(11,160)		(3)	(11,160)
Cash payments	(8,350)			(15,370)			(23,720)
Balance at October 31, 2020	2,915			—			2,915
Charges	5,938		(1)	23,627		(2)	29,565
Cash payments	(8,072)			(23,627)			(31,699)
Balance at October 30, 2021	781			—			781
Charges	3,156		(1)	26,814		(2)	29,970
Cash payments	(2,722)			(22,194)			(24,916)
Balance at October 29, 2022	$	1,215		$	4,620		$	5,835
Current restructuring liabilities	$	1,215		$	4,620		$	5,835

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(1) Reflects employee costs associated with workforce reductions as part of a business optimization strategy to improve gross margin, constrain operating expense and redesign certain business processes.

(2) Primarily represents the redesign of certain business processes associated with Ciena’s supply chain and distribution structure reorganization and costs related to restructured real estate facilities.

(3) Represents restructuring reserve liability recognized as a reduction to Operating ROU assets, net in relation to adoption of ASC 842.