Stock-Based Compensation - Summarized Activity Related to Stock Options (Detail) - Stock Options $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Jul. 31, 2021 USD ($) $ / shares shares
Number of Options
Beginning balance (in shares) | shares	1,487
Granted (in shares) | shares	93
Exercised (in shares) | shares	(221)
Forfeited or expired (in shares) | shares	(38)
Ending balance (in shares) | shares	1,321
Expected to vest (in shares) | shares	568
Exercisable (in shares) | shares	748
Weighted- Average Exercise Price  Per Share
Beginning balance (in dollars per share) | $ / shares	$ 122.45
Granted (in dollars per share) | $ / shares	201.43
Exercised (in dollars per share) | $ / shares	109.69
Forfeited or expired (in dollars per share) | $ / shares	151.40
Ending balance (in dollars per share) | $ / shares	129.29
Expected to vest (in dollars per share) | $ / shares	155.60
Exercisable (in dollars per share) | $ / shares	$ 109.14
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Aggregate Intrinsic Value, Outstanding | $	$ 127,963
Aggregate Intrinsic Value, Expected to vest | $	40,072
Aggregate Intrinsic Value, Exercisable | $	$ 87,554
Weighted Average Remaining Term, Outstanding	6 years 2 months 12 days
Weighted Average Remaining Term, Expected to vest	7 years 7 months 6 days
Weighted Average Remaining Term, Exercisable	5 years 2 months 12 days