Fair Value Measurements (Tables)

6 Months Ended

May 01, 2021

Fair Value Disclosures [Abstract]

Schedule of the Fair Value of Assets and Liabilities Recorded on a Recurring Basis

As of the date indicated, the following table summarizes the assets and liabilities that are recorded at fair value on a recurring basis (in thousands):

	May 1, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	933,403	$	—	$	—	$	933,403
Bond mutual fund	75,370		—		—		75,370
Time deposits	30,018		—		—		30,018
Deferred compensation plan assets	11,799		—		—		11,799
U.S. government obligations	—		243,531		—		243,531
Foreign currency forward contracts	—		13,785		—		13,785
Total assets measured at fair value	$	1,050,590	$	257,316	$	—	$	1,307,906
Liabilities:
Foreign currency forward contracts	$	—	$	285	$	—	$	285
Forward starting interest rate swaps	—		22,794		—		22,794
Total liabilities measured at fair value	$	—	$	23,079	$	—	$	23,079

	October 31, 2020
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	889,293	$	—	$	—	$	889,293
Bond mutual fund	50,361		—		—		50,361
Deferred compensation plan assets	8,213		—		—		8,213
U.S. government obligations	—		232,893		—		232,893
Foreign currency forward contracts	—		82		—		82
Total assets measured at fair value	$	947,867	$	232,975	$	—	$	1,180,842
Liabilities:
Foreign currency forward contracts	$	—	$	681	$	—	$	681
Forward starting interest rate swaps	—		28,513		—		28,513
Total liabilities measured at fair value	$	—	$	29,194	$	—	$	29,194

Schedule of Assets and Liabilities as Presented on Ciena's Condensed Consolidated Balance Sheets

As of the date indicated, the assets and liabilities above are presented on Ciena’s Condensed Consolidated Balance Sheets as follows (in thousands):

	May 1, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	1,038,791	$	—	$	—	$	1,038,791
Short-term investments	—		151,816		—		151,816
Prepaid expenses and other	—		13,785		—		13,785
Long-term investments	—		91,715		—		91,715
Other long-term assets	11,799		—		—		11,799
Total assets measured at fair value	$	1,050,590	$	257,316	$	—	$	1,307,906
Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	285	$	—	$	285
Other long-term obligations	—		22,794		—		22,794
Total liabilities measured at fair value	$	—	$	23,079	$	—	$	23,079

	October 31, 2020
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	939,654	$	—	$	—	$	939,654
Short-term investments	—		150,667		—		150,667
Prepaid expenses and other	—		82		—		82
Other long-term assets	8,213		82,226		—		90,439
Total assets measured at fair value	$	947,867	$	232,975	$	—	$	1,180,842
Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	681	$	—	$	681
Other long-term obligations	—		28,513		—		28,513
Total liabilities measured at fair value	$	—	$	29,194	$	—	$	29,194