Short-Term and Long-Term Debt (Tables)

12 Months Ended

Oct. 31, 2020

Debt Disclosure [Abstract]

Schedule of carrying values and estimated fair values of debt instruments

The net carrying values of Ciena’s term loan were comprised of the following for the fiscal periods indicated (in thousands):

	October 31, 2020								November 2, 2019
	Principal Balance		Unamortized Discount		Deferred Debt Issuance Costs		Net Carrying Value		Net Carrying Value
New 2025 Term Loan	$	687,802	$	(1,577)	$	(2,939)	$	683,286	$	—
Old 2025 Term Loan	$	—	$	—	$	—	$	—	$	687,406