Stock-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum number of common shares available for grant	2,900
Periods of performance considered for calculating compensation expense	3 years
Executive officers and other highly compensated employees salary and annual cash incentive compensation deferrals percentage, maximum	100.00%
Executive officers share-based long-term incentive compensation deferrals percentage, maximum	90.00%
Number of common shares reserved for future issuance	2,781,000
Directors [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense related to director deferred compensation	$ 106,000	$ 158,000	$ 91,000
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options exercisable beginning period	1 year
Maximum rate of stock option, description	Not exceeding 25 percent per year
Option expiring period	10 years
Compensation expense recognized	$ 9,326,000	$ 7,874,000	$ 8,772,000
Unrecognized compensation cost related to nonvested stock option	$ 6,638,000
Weighted average period expected to be amortized, non vested shares	1 year 7 months 7 days
Weighted-average expected volatility used	29.10%	29.60%	34.30%
Weighted average grant date fair value of stock options granted	$ 28.86	$ 18.23	$ 24.63
Total intrinsic value of options exercised	$ 22,317,000	$ 17,271,000	$ 10,406,000
Cash received from the exercise of stock options	14,086,000	11,476,000	5,372,000
Tax benefit realized from tax deductions from exercises of stock options	$ 6,685,000	3,476,000	3,661,000
Stock Options [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum rate of stock option	25.00%
Stock Options [Member] \| Post November 2012 Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Normal retirement age	65 years
Period for options considered to be forfeited for retirees	12 months
Restricted Shares and Restricted Share Units [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant restricted shares transferred period	3 years
Restricted Shares and Restricted Share Units [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant restricted shares transferred period	1 year
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Normal retirement age	65 years
Weighted average period expected to be amortized, non vested shares	1 year 10 months 25 days
Period for restricted shares and share units considered to be forfeited for retirees	12 months
Unrecognized compensation cost related to nonvested restricted stock	$ 2,829,000
Expense related to nonvested common shares	2,127,000	1,963,000	1,840,000
Common share dividends amount included in compensation cost	$ 64,000	60,000	51,000
Restricted Stock Unit [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Period for pro-rata vesting of shares or units for non-employee directors	1 year
Unrecognized compensation cost related to nonvested restricted stock	$ 0
Expense related to nonvested common shares	$ 1,011,000	$ 974,000	$ 972,000
Performance Share Incentive Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Periods of performance considered for calculating compensation expense	3 years
Weighted average grant date fair value		$ 67.69	$ 76.48
Compensation expense	$ 7,398,000	$ 7,083,000	$ 3,459,000
Cumulative amount recorded in shareholders' equity related to Long-Term Incentive Plan	$ 12,820,000	10,951,000
Performance Share Incentive Awards [Member] \| November 21, 2016 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value	$ 103.75
Performance Share Incentive Awards [Member] \| November 28, 2016 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value	$ 104.49
Deferred Compensation [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common share dividends amount included in compensation cost	$ 264,000	$ 219,000	$ 179,000
Executive officers and other highly compensated employees salary and annual cash incentive compensation deferrals percentage, maximum	100.00%
Executive officers share-based long-term incentive compensation deferrals percentage, maximum	90.00%

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Cumulative amount recorded in shareholders' equity.

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Deferred compensation arrangement with individual employee contribution percentage maximum.

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Grant date weighted average fair value per share.

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Normal retirement age of employees.

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Share based compensation arrangement by share based payment award exercisable period.

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Share based compensation share based award options forfeiture period for retirees.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate number of common shares reserved for future issuance.

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared and applicable to holders of share-based compensation, for example, but not limited to, non-vested shares, stock options, or restricted stock units.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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Unrecognized cost of unvested options awarded to employees as compensation.

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The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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Weighted average expected volatility rate of share-based compensation awards.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Percentage of vesting of share-based compensation awards.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

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