FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Apr. 30, 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):



	April 30, 2016
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	749,856	$	—	$	—	$	749,856
U.S. government obligations	—		315,415		—		315,415
Commercial paper	—		69,969		—		69,969
Foreign currency forward contracts	—		1,173		—		1,173
Total assets measured at fair value	$	749,856	$	386,557	$	—	$	1,136,413

Liabilities:
Foreign currency forward contracts	$	—	$	548	$	—	$	548
Forward starting interest rate swap	—		5,428		—		5,428
Total liabilities measured at fair value	$	—	$	5,976	$	—	$	5,976



	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):



	April 30, 2016
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	749,856	$	64,972	$	—	$	814,828
Short-term investments	—		195,179		—		195,179
Prepaid expenses and other	—		1,173		—		1,173
Long-term investments	—		125,233		—		125,233
Total assets measured at fair value	$	749,856	$	386,557	$	—	$	1,136,413

Liabilities:
Accrued liabilities	$	—	$	548	$	—	$	548
Other long-term obligations	—		5,428		—		5,428
Total liabilities measured at fair value	$	—	$	5,976	$	—	$	5,976



	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