FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Jan. 31, 2016

Summary 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):



	January 31, 2016
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	509,365	$	—	$	—	$	509,365
U.S. government obligations	—		305,094		—		305,094
Commercial paper	—		74,958		—		74,958
Foreign currency forward contracts	—		15		—		15
Total assets measured at fair value	$	509,365	$	380,067	$	—	$	889,432

Liabilities:
Foreign currency forward contracts	$	—	$	3,607	$	—	$	3,607
Forward starting interest rate swap	—		5,851		—		5,851
Total liabilities measured at fair value	$	—	$	9,458	$	—	$	9,458



	October 31, 2015
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	642,073	$	—	$	—	$	642,073
U.S. government obligations	—		205,223		—		205,223
Commercial paper	—		74,983		—		74,983
Foreign currency forward contracts	—		89		—		89
Total assets measured at fair value	$	642,073	$	280,295	$	—	$	922,368

Liabilities:
Foreign currency forward contracts	$	—	$	512	$	—	$	512
Forward starting interest rate swap	—		5,522		—		5,522
Total liabilities measured at fair value	$	—	$	6,034	$	—	$	6,034

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 Sheet as follows (in thousands):



	January 31, 2016
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	509,365	$	44,982	$	—	$	554,347
Short-term investments	—		210,010		—		210,010
Prepaid expenses and other	—		15		—		15
Long-term investments	—		125,060		—		125,060
Total assets measured at fair value	$	509,365	$	380,067	$	—	$	889,432

Liabilities:
Accrued liabilities	$	—	$	3,607	$	—	$	3,607
Other long-term obligations	—		5,851		—		5,851
Total liabilities measured at fair value	$	—	$	9,458	$	—	$	9,458



	October 31, 2015
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	642,073	$	49,994	$	—	$	692,067
Short-term investments	—		135,107		—		135,107
Prepaid expenses and other	—		89		—		89
Long-term investments	—		95,105		—		95,105
Total assets measured at fair value	$	642,073	$	280,295	$	—	$	922,368

Liabilities:
Accrued liabilities	$	—	$	512	$	—	$	512
Other long-term obligations	—		5,522		—		5,522
Total liabilities measured at fair value	$	—	$	6,034	$	—	$	6,034