Financial Assets and Liabilities (Tables)

6 Months Ended

Apr. 30, 2017

Financial Assets And Liabilities [Abstract]

Summary of Available-for-Sale Securities

As of April 30, 2017, the balances of our available-for-sale securities are:

	Cost		Gross Unrealized Gains		Gross Unrealized Losses Less Than 12 Months			Gross Unrealized Losses 12 Months or Longer		Estimated Fair Value(1)
	(in thousands)
Cash equivalents:
Money market funds	$	392,191	$	—	$	—		$	—	$	392,191
Commercial paper	3,448		—		—			—		3,448
Certificates of deposit	1,000		—		—			—		1,000
Corporate debt securities	1,550		—		—			—		1,550
U.S. government agency securities	2,000		—		—			—		2,000
Total:	$	400,189	$	—	$	—		$	—	$	400,189
Short-term investments:
U.S. government agency securities	$	16,494	$	—	$	(34	)	$	—	$	16,460
Certificates of deposit	21,214		—		—			—		21,214
Commercial paper	23,472		—		—			—		23,472
Corporate debt securities	57,469		39		(29		)	—		57,479
Asset-backed securities	20,829		5		(15		)	—		20,819
Other	799		—		—			—		799
Total:	$	140,277	$	44	$	(78	)	$	—	$	140,243

(1) See Note 6. Fair Value Measures for further discussion on fair values of cash equivalents and short-term investments.

As of October 31, 2016, the balances of our available-for-sale securities are:

	Cost		Gross Unrealized Gains		Gross Unrealized Losses Less Than 12 Continuous Months			Gross Unrealized Losses 12 Continuous Months or Longer		Estimated Fair Value(1)
	(in thousands)
Cash equivalents:
Money market funds	$	499,274	$	—	$	—		$	—	$	499,274
Commercial paper	1,498		—		—			—		1,498
Certificates of deposit	4,200		—		—			—		4,200
Total:	$	504,972	$	—	$	—		$	—	$	504,972
Short-term investments:
U.S. government agency securities	$	13,607	$	4	$	(8	)	$	—	$	13,603
Certificates of deposit	12,849		—		—			—		12,849
Commercial paper	25,430		1		—			—		25,431
Corporate debt securities	58,753		43		(18		)	—		58,778
Asset-backed securities	22,146		12		(12		)	—		22,146
Non-U.S. government agency securities	3,403		—		(3		)	—		3,400
Other	4,488		—		—			—		4,488
Total:	$	140,676	$	60	$	(41	)	$	—	$	140,695

(1) See Note 6. Fair Value Measures for further discussion on fair values of cash equivalents and short-term investments.

Maturities of Available-for-Sale securities

As of April 30, 2017, the stated maturities of the Company's available-for-sale securities are:

	Amortized Cost		Fair Value
	(in thousands)
Due in 1 year or less	$	97,324	$	97,306
Due in 2-5 years	42,779		42,762
Due in 6-10 years	174		175
Total	$	140,277	$	140,243

Effects on Changes in Fair Values of Non-Designated Forward Contracts

The effects of the changes in the fair values of non-designated forward contracts are summarized as follows:

	Three Months Ended   April 30,				Six Months Ended   April 30,
	2017		2016		2017		2016
	(in thousands)
Gain (loss) recorded in other income (expense), net	$	1,263	$	1,914	$	1,322	$	(1,849	)

Notional Amounts of Derivative Instruments

The notional amounts in the table below for derivative instruments provide one measure of the transaction volume outstanding:

	As of April 30, 2017		As of October 31, 2016
	(in thousands)
Total gross notional amount	$	851,854	$	758,246
Net fair value	$	4,261	$	(15,358	)

Fair Values of Derivative Instrument Designated and Non-Designated as Hedging Instruments in Balance Sheet

The following represents the unaudited condensed consolidated balance sheet location and amount of derivative instrument fair values segregated between designated and non-designated hedge instruments:

	Fair values of derivative instruments designated as hedging instruments		Fair values of derivative instruments not designated as hedging instruments
	(in thousands)
As of April 30, 2017
Other current assets	$	11,525	$	799
Accrued liabilities	$	7,922	$	141
As of October 31, 2016
Other current assets	$	4,625	$	27
Accrued liabilities	$	19,910	$	101

Income Statement Location and Amount of Gains and Losses on Derivative Instrument Fair Values for Designated Hedge Instruments, Net of Tax

The following table represents the unaudited condensed consolidated statement of operations location and amount of gains and losses on derivative instrument fair values for designated hedge instruments, net of tax:

	Location of gain (loss) recognized in OCI on derivatives	Amount of gain (loss) recognized in OCI on derivatives (effective portion)			Location of gain (loss) reclassified from OCI	Amount of gain (loss) reclassified from OCI (effective portion)
	(in thousands)
Three months ended   April 30, 2017
Foreign exchange contracts	Revenue	$	(1,604	)	Revenue	$	(428	)
Foreign exchange contracts	Operating expenses	5,669			Operating expenses	(1,310		)
Total		$	4,065			$	(1,738	)
Three months ended   April 30, 2016
Foreign exchange contracts	Revenue	$	(6,182	)	Revenue	$	(1,429	)
Foreign exchange contracts	Operating expenses	9,322			Operating expenses	(3,768		)
Total		$	3,140			$	(5,197	)
Six months ended   April 30, 2017
Foreign exchange contracts	Revenue	$	7,000		Revenue	$	(2,181	)
Foreign exchange contracts	Operating expenses	3,610			Operating expenses	(3,412		)
Total		$	10,610			$	(5,593	)
Six months ended   April 30, 2016
Foreign exchange contracts	Revenue	$	(7,673	)	Revenue	$	(1,217	)
Foreign exchange contracts	Operating expenses	(1,945		)	Operating expenses	(7,696		)
Total		$	(9,618	)		$	(8,913	)

Ineffective Portion and Portion Excluded from Effectiveness Testing of Derivative Hedge Gains (Losses)

The following table represents the ineffective portions and portions excluded from effectiveness testing of the hedge gains (losses) for derivative instruments designated as hedging instruments, which are recorded in other income (expense), net:

Foreign exchange contracts	Amount of gain (loss) recognized in statement of operations on derivatives (ineffective portion)(1)			Amount of gain (loss) recognized in statement of operations on derivatives (excluded from effectiveness testing)(2)
	(in thousands)
For the three months ended April 30, 2017	$	(5	)	$	1,499
For the three months ended April 30, 2016	$	201		$	2,140
For the six months ended April 30, 2017	$	164		$	2,617
For the six months ended April 30, 2016	$	455		$	3,541

(1) The ineffective portion includes forecast inaccuracies.

(2) The portion excluded from effectiveness testing includes the discount earned or premium paid for the contracts.