Employee Benefit Plans - Stock Options (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted- Average Exercise Price per Share, Options exercised (in USD per share)		$ 66.50	$ 51.76	$ 44.29
Stock Option | All Stock Plans
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, beginning balance (in shares)	[1]	3,993	5,290	6,291
Options Outstanding, Options granted (in shares)	[1]	353	700	799
Options Outstanding, Options exercised (in shares)	[1]	(1,203)	(1,891)	(1,615)
Options Outstanding, Options canceled/forfeited/expired (in shares)	[1]	(36)	(106)	(185)
Options outstanding, ending balance (in shares)	[1]	3,107	3,993	5,290	6,291
Options outstanding, vested and expected to vest (in shares)	[1]	3,107
Options Outstanding, Exercisable (in shares)	[1]	1,990
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted- Average Exercise Price per Share, Beginning balance (in USD per share)		$ 85.26	$ 65.57	$ 55.63
Weighted- Average Exercise Price per Share, Options granted (in USD per share)		239.46	143.44	113.17
Weighted- Average Exercise Price per Share, Options exercised (in USD per share)		66.50	51.76	44.29
Weighted- Average Exercise Price per Share, Options canceled/forfeited/expired (in USD per share)		128.49	84.14	58.02
Weighted- Average Exercise Price per Share, Ending balance (in USD per share)		109.51	$ 85.26	$ 65.57	$ 55.63
Weighted- Average Exercise Price per Share, Vested and expected to vest (in USD per share)		109.51
Weighted- Average Exercise Price per Share, Exercisable (in USD per share)		$ 81.88
Weighted Average Remaining Contractual Life, options outstanding		3 years 9 months 21 days	4 years 1 month 6 days	4 years 29 days	4 years 4 months 20 days
Weighted Average Remaining Contractual Life, options outstanding, vested and expected to vest		3 years 9 months 21 days
Weighted-Average Remaining Contractual Life , Exercisable		3 years 29 days
Aggregate Intrinsic Value, Beginning balance		$ 513,845	$ 373,112	$ 214,432
Aggregate Intrinsic Value, ending Balance		694,921	$ 513,845	$ 373,112	$ 214,432
Aggregate Intrinsic Value, vested and expected to vest		694,921
Aggregate Intrinsic Value, Exercisable		$ 500,210

[1] No stock options were assumed in connection with acquisitions in the last three fiscal years, but the balance at fiscal year-end includes certain stock options that were previously assumed in connection with acquisitions.