FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Jul. 29, 2023

Fair Value Disclosures [Abstract]

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

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

	July 29, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	767,668	$	—	$	—	$	767,668
Bond mutual fund	102,715		—		—		102,715
Time deposits	80,843		—		—		80,843
Deferred compensation plan assets	12,203		—		—		12,203
U.S. government obligations	—		93,740		—		93,740
Corporate debt securities	—		63,248		—		63,248
Foreign currency forward contracts	—		2,574		—		2,574
Interest rate swaps	—		19,528		—		19,528
Total assets measured at fair value	$	963,429	$	179,090	$	—	$	1,142,519
Liabilities:
Foreign currency forward contracts	$	—	$	4,691	$	—	$	4,691
Interest rate swaps	—		32		—		32
Total liabilities measured at fair value	$	—	$	4,723	$	—	$	4,723

	October 29, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	639,024	$	—	$	—	$	639,024
Bond mutual fund	71,145		—		—		71,145
Time deposits	55,825		—		—		55,825
Deferred compensation plan assets	12,751		—		—		12,751
U.S. government obligations	—		134,584		—		134,584
Corporate debt securities	—		54,495		—		54,495
Foreign currency forward contracts	—		251		—		251
Interest rate swaps	—		12,306		—		12,306
Total assets measured at fair value	$	778,745	$	201,636	$	—	$	980,381
Liabilities:
Foreign currency forward contracts	$	—	$	15,605	$	—	$	15,605
Total liabilities measured at fair value	$	—	$	15,605	$	—	$	15,605

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

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

	July 29, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	944,714	$	559	$	—	$	945,273
Short-term investments	6,512		135,331		—		141,843
Prepaid expenses and other	—		2,574		—		2,574
Long-term investments	—		21,098		—		21,098
Other long-term assets	12,203		19,528		—		31,731
Total assets measured at fair value	$	963,429	$	179,090	$	—	$	1,142,519
Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	4,691	$	—	$	4,691
Other long-term obligations	—		32		—		32
Total liabilities measured at fair value	$	—	$	4,723	$	—	$	4,723

	October 29, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	757,725	$	7,974	$	—	$	765,699
Short-term investments	8,269		145,720		—		153,989
Prepaid expenses and other	—		251		—		251
Long-term investments	—		35,385		—		35,385
Other long-term assets	12,751		12,306		—		25,057
Total assets measured at fair value	$	778,745	$	201,636	$	—	$	980,381
Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	15,605	$	—	$	15,605
Total liabilities measured at fair value	$	—	$	15,605	$	—	$	15,605