Employee Benefit Plans (Tables)

12 Months Ended

Oct. 31, 2017

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

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, 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
Granted	1,584		$	70.49
Vested(1)	(1,536	)	$	43.53		$	110,103
Forfeited	(240	)	$	49.36
Balance at October 31, 2017	3,843		$	57.26	1.54


(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 2017 Directors Plan:



	Available for Grant(3)		Options(2)
	Available for Grant(3)		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, 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
Options granted	(1,505	)	1,536		$	68.18
Options assumed(2)			154		$	34.52
Options exercised			(1,770	)	$	34.56
Options canceled/forfeited/expired	129		(145	)	$	47.17
Restricted stock units granted(1)	(2,694	)
Restricted stock units forfeited(1)	409
Additional shares reserved	5,000
Balance at October 31, 2017	12,583		6,530		$	46.83	4.60	$	263,555
Vested and expected to vest as of October 31, 2017			6,530		$	46.83	4.60	$	263,555
Exercisable at October 31, 2017			3,252		$	39.72	3.64	$	154,357


(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 2017 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,
	2017		2016		2015
	(in thousands, except per share price)
Intrinsic value	$	67,089	$	51,408	$	44,104
Average exercise price per share	$	34.56	$	30.06	$	26.06

Summary of Restricted Stock Award Activities Under 2005 Directors Plan

Restricted stock award activities during fiscal 2017 under the 2005 Directors Plan and 2017 Directors Plan are summarized as follows:



	Restricted Shares		Weighted-Average Grant Date Fair Value
	(in thousands, except per share)
Unvested at October 31, 2016	43		$	45.97
Granted	20		$	71.34
Vested	(22	)	$	44.33
Forfeited	(3	)	$	47.65
Unvested at October 31, 2017	38		$	59.89

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,
	2017	2016	2015
Stock Options
Expected life (in years)	4.1	4.1	4.3
Risk-free interest rate	1.73% - 2.06%	1.06% - 1.63%	1.24% - 1.58%
Volatility	18.51% - 19.67%	19.21%-21.62%	16.92%-21.76%
Weighted average estimated fair value	$13.56	$8.97	$8.77
ESPP
Expected life (in years)	0.5 - 2.0	0.5 - 2.0	0.5 - 2.0
Risk-free interest rate	0.82% - 1.37%	0.53% - 0.86%	0.12% - 0.75%
Volatility	17.20% - 19.99%	17.03% - 25.46%	18.01% - 21.60%
Weighted average estimated fair value	$18.77	$12.75	$11.11

Stock Compensation Expense

The following table presents stock-based compensation expense for fiscal 2017, 2016 and 2015, respectively:



	Year Ended October 31,
	2017			2016			2015
	(in thousands)
Cost of products	$	12,553		$	11,006		$	9,162
Cost of maintenance and service	3,918			2,418			2,164
Research and development expense	52,933			49,511			43,431
Sales and marketing expense	21,001			19,690			17,744
General and administrative expense	17,889			14,958			13,899
Stock-based compensation expense before taxes	108,294			97,583			86,400
Income tax benefit	(30,950		)	(25,967		)	(20,071		)
Stock-based compensation expense after taxes	$	77,344		$	71,616		$	66,329

Deferred Plan Assets and Liabilities

Deferred Plan Assets and Liabilities are as follows:



	As of October 31, 2017		As of October 31, 2016
	(In thousands)
Plan assets recorded in other long-term assets	$	197,542	$	163,185
Plan liabilities recorded in other long-term liabilities(1)	$	197,542	$	163,185


(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,
	2017		2016		2015
	(in thousands)
Increase (reduction) to cost of revenue and operating expense	$	29,606	$	4,400	$	3,701
Other income (expense), net	29,606		4,400		3,701
Net increase (decrease) to net income	$	—	$	—	$	—