Deferred compensation arrangement with individual employee contribution percentage maximum.

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Deferred compensation arrangement with individual employee contribution percentage of long term incentive compensation maximum.

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Normal retirement age of employees.

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Share based compensation share based award restricted shares termination period for disability or death.

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

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

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Share based compensation arrangement by share based payment award termination period on death or disability of option holder.

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Share based compensation share based award restricted shares forfeiture period for retirees.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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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 dividends declared for award under share-based payment arrangement.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Stock-based compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023	Oct. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common shares authorized for grant (in shares)	900,000		900,000
Number of common shares available for grant (in shares)	1,875,000		1,875,000
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%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option expiring period			10 years
Normal retirement age			65 years
Period for options considered to be forfeited for retirees			12 months
Termination period on death or disability of option holder			12 months
Compensation expense recognized	$ 1,426	$ 1,697	$ 3,960	$ 4,982
Unrecognized compensation cost related to unvested stock option	5,668		$ 5,668
Weighted average period expected to be amortized, non vested shares			2 years 10 months 24 days
Weighted-average expected volatility used			30.70%	30.60%
Weighted average grant date fair value of stock options granted (in dollars per share)			$ 79.84	$ 77.99
Total intrinsic value of options exercised	3,115	7,741	$ 33,286	$ 19,873
Cash received from the exercise of stock options			$ 29,142	18,449
Stock Options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum rate of stock option			25.00%
Restricted Shares and Restricted Share Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant restricted shares transferred period			3 years
Restricted Shares and Restricted Share Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant restricted shares transferred period			1 year
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Normal retirement age			65 years
Period for restricted shares and share units considered to be forfeited for retirees			12 months
Restricted shares termination period for disability or death			12 months
Unrecognized compensation cost related to nonvested restricted stock	0		$ 0
Expense related to nonvested common shares	0	73	0	336
Common share dividends amount included in compensation cost	0	2	$ 0	5
Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period expected to be amortized, non vested shares			1 year 10 months 24 days
Unrecognized compensation cost related to nonvested restricted stock	10,876		$ 10,876
Expense related to nonvested common shares	$ 2,198	2,152	$ 6,658	6,658
Weighted average grant date fair value (in dollars per share)	$ 236.37		$ 236.37		$ 236,280
Performance Share Incentive Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period			3 years
Compensation expense	$ 771	$ 1,831	$ 3,637	$ 4,785
Unrecognized compensation cost	$ 8,224		$ 8,224
Performance Share Incentive Awards \| Grant Date One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (in dollars per share)	$ 229.58	$ 211.25	$ 229.58	$ 211.25
Performance Share Incentive Awards \| Grant Date Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (in dollars per share)	$ 225.14	231.34	$ 225.14	231.34
Performance Share Incentive Awards \| Grant Date Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (in dollars per share)		$ 214.51		$ 214.51
Deferred Compensation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common share dividends amount included in compensation cost	$ 23	$ 30	$ 71	$ 77
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%
Deferred Compensation \| Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense related to director deferred compensation	$ 91	$ 76	$ 226	$ 234