Stock-Based Compensation and Shareholders' Equity (Tables)

12 Months Ended

Oct. 31, 2020

Share-based Payment Arrangement [Abstract]

Summary of Company's stock option awards and the related estimated weighted-average assumptions used to calculate the fair value of stock options granted

Information pertaining to the Company’s stock option awards and the related estimated weighted-average assumptions to calculate the fair value of stock options using the Black-Scholes valuation model granted in fiscal 2020, fiscal 2019 and fiscal 2018 is as follows: 

	2020		2019		2018
Options granted (in thousands)	359		454		603
Weighted-average exercise price	$94.41		$107.11		$90.98
Weighted-average grant-date fair value	$18.81		$23.29		$20.82
Assumptions:
Weighted-average expected volatility	29.5	%	26.4	%	27.7	%
Weighted-average expected term (in years)	5.0		5.0		5.0
Weighted-average risk-free interest rate	0.7	%	2.4	%	2.6	%
Weighted-average expected dividend yield	2.6	%	2.0	%	2.1	%

Summary of share-based payment arrangement, expensed amount

Total stock-based compensation expense recognized is as follows:

	2020		2019		2018
Cost of sales	$	17,684	$	20,628	$	18,733
Research and development	73,366		75,305		81,444
Selling, marketing, general and administrative	56,838		51,829		50,988
Special charges	1,630		2,538		—
Total stock-based compensation expense	$	149,518	$	150,300	$	151,165

Summary of the activity under the Company's stock option plans

A summary of the activity under the Company’s stock option plans as of October 31, 2020 and changes during the fiscal year then ended is presented below: 

	Options Outstanding (in thousands)	Weighted- Average Exercise Price Per Share	Weighted- Average Remaining Contractual Term in Years	Aggregate Intrinsic Value
Options outstanding at November 2, 2019	5,183	$65.97
Options granted	359	$94.41
Options exercised	(1,221)	$56.02
Options forfeited	(129)	$82.70
Options outstanding at October 31, 2020	4,192	$70.73	5.8	$200,398
Options exercisable at October 31, 2020	2,677	$61.23	4.7	$153,408
Options vested or expected to vest at October 31, 2020 (1)	4,109	$70.29	5.7	$198,237

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(1)In addition to the vested options, the Company expects a portion of the unvested options to vest at some point in the future. The number of options expected to vest is calculated by applying an estimated forfeiture rate to the unvested options.

Summary of the company's restricted stock unit award activity

A summary of the Company’s restricted stock unit award activity as of October 31, 2020 and changes during the fiscal year then ended is presented below: 

	Restricted Stock Units/Awards Outstanding (in thousands)	Weighted- Average Grant- Date Fair Value Per Share
Restricted stock units/awards outstanding at November 2, 2019	4,396	$87.18
Units/Awards granted	1,413	$97.44
Restrictions lapsed	(1,876)	$85.41
Forfeited	(296)	$89.45
Restricted stock units/awards outstanding at October 31, 2020	3,637	$91.54