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Stock Plans - Stock Option Plans (Details)	12 Months Ended
	Oct. 31, 2021 USD ($) $ / shares shares
Number of Shares
Vested and expected to vest at end of period (in shares) | shares	939,788
Vested and exercisable at end of period (in shares) | shares	470,748
Weighted- Average Exercise Price Per Share
Vested and expected to vest at end of period (in dollars per share) | $ / shares	$ 243.15
Vested and exercisable at end of period (in dollars per share) | $ / shares	$ 207.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Vested and expected to vest at end of period, Weighted-Average Remaining Contractual Term (in years)	6 years 1 month 28 days
Vested and exercisable at end of period, Weighted-Average Remaining Contractual Term (in years)	4 years 11 months 26 days
Vested and expected to vest at end of period, Aggregate Intrinsic Value | $	$ 163,310,445
Vested and exercisable at end of period, Aggregate Intrinsic Value | $	$ 98,757,454
Stock Options
Number of Shares
Outstanding, beginning balance (in shares) | shares	1,103,507
Granted (in shares) | shares	109,440
Exercised (in shares) | shares	(235,478)
Forfeited or expired (in shares) | shares	(4,777)
Outstanding, ending balance (in shares) | shares	972,692
Weighted- Average Exercise Price Per Share
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 213.53
Granted (in dollars per share) | $ / shares	345.74
Exercised (in dollars per share) | $ / shares	142.31
Forfeited or expired (in dollars per share) | $ / shares	327.62
Outstanding, ending balance (in dollars per share) | $ / shares	$ 245.09
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, ending balance, Weighted Average Remaining Contractual Term (in years)	6 years 2 months 19 days

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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