Fair Value Measurements (Tables)

3 Months Ended

Jan. 31, 2015

Fair Value Disclosures [Abstract]

Summary of the fair value of assets recorded on a recurring basis

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

	January 31, 2015
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	411,477	$	—	$	—	$	411,477
U.S. government obligations	—		170,321		—		170,321
Commercial paper	—		94,981		—		94,981
Foreign currency forward contracts	—		654		—		654
Total assets measured at fair value	$	411,477	$	265,956	$	—	$	677,433
Liabilities:
Foreign currency forward contracts	$	—	$	5,241	$	—	$	5,241
Forward starting interest rate swap	—		4,648		—		4,648
Total liabilities measured at fair value	$	—	$	9,889	$	—	$	9,889

	October 31, 2014
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	440,013	$	—	$	—	$	440,013
U.S. government obligations	—		160,268		—		160,268
Commercial paper	—		89,989		—		89,989
Foreign currency forward contracts	—		1,561		—		1,561
Total assets measured at fair value	$	440,013	$	251,818	$	—	$	691,831
Liabilities:
Foreign currency forward contracts	$	—	$	200	$	—	$	200
Forward starting interest rate swap	—		2,083		—		2,083
Total liabilities measured at fair value	$	—	$	2,283	$	—	$	2,283

Assets are presented on Ciena's Condensed Consolidated Balance Sheet

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

	January 31, 2015
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	411,477	$	64,995	$	—	$	476,472
Short-term investments	—		145,154		—		145,154
Prepaid expenses and other	—		654		—		654
Long-term investments	—		55,153		—		55,153
Total assets measured at fair value	$	411,477	$	265,956	$	—	$	677,433
Liabilities:
Accrued liabilities	$	—	$	5,241	$	—	$	5,241
Other long-term obligations	—		4,648		—		4,648
Total liabilities measured at fair value	$	—	$	9,889	$	—	$	9,889

	October 31, 2014
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	440,013	$	59,995	$	—	$	500,008
Short-term investments	—		140,205		—		140,205
Prepaid expenses and other	—		1,561		—		1,561
Long-term investments	—		50,057		—		50,057
Total assets measured at fair value	$	440,013	$	251,818	$	—	$	691,831
Liabilities:
Accrued liabilities	$	—	$	200	$	—	$	200
Other long-term obligations	—		2,083		—		2,083
Total liabilities measured at fair value	$	—	$	2,283	$	—	$	2,283