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Employee Benefit Plans (Tables)

12 Months Ended

Oct. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Restricted Stock Units

The following table contains information concerning activities related to restricted stock units:

	Restricted Stock Units			Weighted  Average Grant Date Fair Value				Weighted Average Remaining Contractual Life (In Years)		Aggregate Fair Value
	(in thousands, except per share and life amounts)
Balance at October 31, 2013	3,983			$	31.23			1.51
Granted	1,645			$	39.03
Vested(1)	(1,564	)		$	29.07					$	60,815
Forfeited	(117	)		$	32.95
Balance at October 31, 2014	3,947			$	35.29			1.53
Granted	1,707			$	48.13
Vested(1)	(1,522	)		$	33.05					$	73,677
Forfeited	(204	)		$	37.68
Balance at October 31, 2015	3,928			$	41.61			1.54
Granted	1,765			$	49.59
Vested(1)	(1,547	)		$	38.33					$	79,558
Forfeited	(111	)		$	43.12
Balance at October 31, 2016	4,035			$	46.37			1.56

(1) The number of vested restricted stock units includes shares that were withheld on behalf of employees to satisfy the minimum statutory tax withholding requirements.

Stock Options and Restricted Stock Units Under all Equity Plans (Except 2005 Directors Plan)

The following table contains additional information concerning activities related to stock options and restricted stock units under all equity plans, other than shares available for grant under the 2005 Directors Plan:

	Available for Grant(3)			Options(2)
				Options Outstanding			Weighted- Average Exercise Price per Share				Weighted- Average Remaining Contractual Life (In Years)		Aggregate Intrinsic Value
	(in thousands, except per share and life amounts)
Balance at October 31, 2013	8,472			7,726			$	26.87			4.30		$	71,700
Options Granted	(1,686	)		1,686			$	38.65
Options Assumed(2)				843			$	24.63
Options Exercised				(2,103	)		$	24.47
Options Canceled/forfeited/expired	163			(402	)		$	27.44
Restricted stock units granted(1)	(2,468	)
Restricted stock units forfeited(1)	174
Additional shares reserved	7,500
Balance at October 31, 2014	12,155			7,750			$	29.81			4.66		$	86,537
Options Granted	(1,908	)		1,942			$	45.14
Options Assumed(2)				133			$	38.97
Options Exercised				(2,125	)		$	26.06
Options Canceled/forfeited/expired	230			(411	)		$	33.51
Restricted stock units granted(1)	(2,707	)
Restricted stock units forfeited(1)	313
Additional shares reserved	3,800
Balance at October 31, 2015	11,883			7,289			$	34.94			4.67		$	109,627
Options Granted	(1,685	)		1,685			$	47.39
Options Exercised				(2,154	)		$	30.06
Options Canceled/forfeited/expired	33			(65	)		$	35.31
Restricted stock units granted(1)	(2,967	)
Restricted stock units forfeited(1)	180
Additional shares reserved	3,800
Balance at October 31, 2016	11,244			6,755			$	39.59			4.65		$	126,850
Vested and expected to vest as of October 31, 2016				6,641			$	39.48			4.63		$	125,429
Exercisable at October 31, 2016				3,282			$	34.46			3.67		$	78,478

(1) These amounts do not reflect the actual number of restricted stock units granted or forfeited but rather the effect on the total remaining shares available for future grants after the application of the share reserve ratio. For more information about the share reserve ratio, please see Restricted Stock Units above.

(2) The Company assumed options outstanding under various plans through acquisitions.

(3) Excluding shares reserved for future issuance under the 2005 Directors Plan.

Pretax Intrinsic Value of Options Exercised and Their Average Exercise Prices

The pretax intrinsic value of options exercised and their average exercise prices were:

	Year Ended October 31,
	2016				2015				2014
	(in thousands, except per share price)
Intrinsic value	$	51,408			$	44,104			$	32,094
Average exercise price per share	$	30.06			$	26.06			$	24.47

Summary of Restricted Stock Award Activities Under 2005 Directors Plan

Restricted stock award activities during fiscal 2016 under the 2005 Directors Plan are summarized as follows:

	Restricted Shares			Weighted-Average Grant Date Fair Value
	(in thousands, except per share)
Unvested at October 31, 2015	45			$	41.82
Granted	21			$	48.27
Vested	(23	)		$	39.94
Forfeited	—			$	—
Unvested at October 31, 2016	43			$	45.97

Stock Option Plans and Stock Purchase Rights Granted Under ESPP

The assumptions presented in the following table were used to estimate the fair value of stock options and employee stock purchase rights granted under the Company’s stock plans or stock plans assumed from acquisitions:

	Year Ended October 31,
	2016		2015		2014
Stock Options
Expected life (in years)	4.1		4.3		4.5
Risk-free interest rate	1.06% - 1.63%		1.24% - 1.58%		1.38% - 1.74%
Volatility	19.21%-21.62%		16.92%-21.76%		18.38%-20.00%
Weighted average estimated fair value	$8.97		$8.77		$10.95
ESPP
Expected life (in years)	0.5 - 2.0		0.5 - 2.0		0.5 - 2.0
Risk-free interest rate	0.53% - 0.86%		0.12% - 0.75%		0.05% - 0.58%
Volatility	17.03% - 25.46%		18.01% - 21.60%		16.84% - 18.78%
Weighted average estimated fair value	$12.75		$11.11		$9.17

Stock Compensation Expense

The following table presents stock compensation expense for fiscal 2016, 2015 and 2014, respectively:

	Year Ended October 31,
	2016				2015				2014
	(in thousands)
Cost of products	$	11,006			$	9,162			$	8,122
Cost of maintenance and service	2,418				2,164				2,336
Research and development expense	49,511				43,431				38,241
Sales and marketing expense	19,690				17,744				16,754
General and administrative expense	14,958				13,899				13,987
Stock compensation expense before taxes	97,583				86,400				79,440
Income tax benefit	(25,967		)		(20,071		)		(18,224		)
Stock compensation expense after taxes	$	71,616			$	66,329			$	61,216

Deferred Plan Assets and Liabilities

Deferred Plan Assets and Liabilities are as follows:

	As of October 31, 2016				As of October 31, 2015
	(In thousands)
Plan assets recorded in other long-term assets	$	163,185			$	158,462
Plan liabilities recorded in other long-term liabilities(1)	$	163,185			$	158,462

(1) Undistributed deferred compensation balances due to participants.

Summary of Impact of Deferred Plan

The following table summarizes the impact of the Deferred Plan:

	Year Ended October 31,
	2016				2015				2014
	(in thousands)
Increase (reduction) to cost of revenue and operating expense	$	4,400			$	3,701			$	10,856
Other income (expense), net	4,400				3,701				10,856
Net increase (decrease) to net income	$	—			$	—			$	—

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