Fair Value Measurements

3 Months Ended

Jan. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

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, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	521,698	$	—	$	—	$	521,698
U.S. government obligations	—		298,025		—		298,025
Commercial paper	—		69,810		—		69,810
Foreign currency forward contracts	—		3,730		—		3,730
Forward starting interest rate swaps	—		4,117		—		4,117
Total assets measured at fair value	$	521,698	$	375,682	$	—	$	897,380
Liabilities:
Foreign currency forward contracts	$	—	$	2,415	$	—	$	2,415
Total liabilities measured at fair value	$	—	$	2,415	$	—	$	2,415

	October 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	511,355	$	—	$	—	$	511,355
U.S. government obligations	—		298,976		—		298,976
Commercial paper	—		89,865		—		89,865
Foreign currency forward contracts	—		227		—		227
Forward starting interest rate swaps	—		218		—		218
Total assets measured at fair value	$	511,355	$	389,286	$	—	$	900,641
Liabilities:
Foreign currency forward contracts	$	—	$	2,129	$	—	$	2,129
Total liabilities measured at fair value	$	—	$	2,129	$	—	$	2,129

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, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	521,698	$	29,941	$	—	$	551,639
Short-term investments	—		278,743		—		278,743
Prepaid expenses and other	—		3,730		—		3,730
Long-term investments	—		59,151		—		59,151
Other long-term assets	—		4,117		—		4,117
Total assets measured at fair value	$	521,698	$	375,682	$	—	$	897,380
Liabilities:
Accrued liabilities	$	—	$	2,415	$	—	$	2,415
Total liabilities measured at fair value	$	—	$	2,415	$	—	$	2,415

	October 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	511,355	$	59,925	$	—	$	571,280
Short-term investments	—		279,133		—		279,133
Prepaid expenses and other	—		227		—		227
Long-term investments	—		49,783		—		49,783
Other long-term assets	—		218		—		218
Total assets measured at fair value	$	511,355	$	389,286	$	—	$	900,641
Liabilities:
Accrued liabilities	$	—	$	2,129	$	—	$	2,129
Total liabilities measured at fair value	$	—	$	2,129	$	—	$	2,129

Ciena did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented.