Stock-Based Compensation and Shareholders' Equity - Outstanding Compensation (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Jul. 31, 2021 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, at beginning of period (in shares) | shares	4,192
Options granted (in shares) | shares	644
Options exercised (in shares) | shares	(875)
Options forfeited (in shares) | shares	(36)
Options expired (in shares) | shares	(6)
Options outstanding, at end of period (in shares) | shares	3,919
Options exercisable (in shares) | shares	2,511
Options vested or expected to vest (in shares) | shares	3,816
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Options outstanding, weighted-average exercise price per share, at beginning of period (in dollars per share) | $ / shares	$ 70.73
Options granted, weighted-average exercise price per share (in dollars per share) | $ / shares	145.04
Options exercised, weighted-average exercise price per share (in dollars per share) | $ / shares	63.18
Options forfeited, weighted-average exercise price per share (in dollars per share) | $ / shares	87.18
Options expired, weighted-average exercise price per share (in dollars per share) | $ / shares	40.69
Options outstanding, weighted-average exercise price per share, at end of period (in dollars per share) | $ / shares	84.53
Options exercisable, weighted-average exercise price per share (in dollars per share) | $ / shares	66.15
Options vested or expected to vest, weighted-average exercise price per share (in dollars per share) | $ / shares	$ 83.41
Options outstanding, weighted-average remaining contractual term in years	5 years 8 months 12 days
Options exercisable, weighted-average remaining contractual term in years	4 years 3 months 18 days
Options vested or expected to vest, weighted-average remaining contractual term in years	5 years 8 months 12 days
Options outstanding, aggregate intrinsic value | $	$ 324,862
Options exercisable, aggregate intrinsic value | $	254,262
Options vested or expected to vest, aggregate intrinsic value | $	$ 320,532
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Restricted stock units/awards outstanding, at beginning of period (in shares) | shares	3,637
Units/Awards granted (in shares) | shares	1,034
Restrictions lapsed (in shares) | shares	(1,160)
Forfeited (in shares) | shares	(163)
Restricted stock units/awards outstanding, at end of period (in shares) | shares	3,348
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Restricted stock units/awards outstanding, at beginning of period (in dollar per shares) | $ / shares	$ 91.54
Units/Awards granted (in dollar per shares) | $ / shares	143.88
Restrictions lapsed (in dollar per shares) | $ / shares	89.08
Forfeited (in dollar per shares) | $ / shares	100.74
Restricted stock units/awards outstanding, at end of period (in dollar per shares) | $ / shares	$ 107.70