Stock-Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common shares available for grant	2,900,000
Cash received from the exercise of stock options	$ 7,013,000	$ 6,018,000	$ 4,934,000
Periods of performance considered for calculating compensation expense	3 years
Percentage of base pay and annual incentive compensation deferred	100.00%
Percentage of long term incentive compensation plan deferred	90.00%
Number of common shares reserved for future issuance	2,430,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares and restricted share units, Transfer of shares designated period	1 year
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares and restricted share units, Transfer of shares designated period	3 years
Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense related to director deferred compensation	101,000	183,000	265,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum rate of stock option, description	Not exceeding 25 percent per year
Maximum rate of stock option	25.00%
Option expiring period	10 years
Options exercisable beginning period	1 year
Compensation expense recognized	10,251,000	4,906,000	3,789,000
Unrecognized compensation cost related to nonvested common shares	6,741,000
Weighted average period expected to be amortized, non vested shares	1 year 4 months 24 days
Weighted-average expected volatility used	44.50%	46.30%	46.20%
Weighted average grant date fair value of stock options granted	$ 27.92	$ 24.12	$ 17.03
Total intrinsic value of options exercised	17,223,000	12,892,000	13,329,000
Cash received from the exercise of stock options	7,013,000	6,018,000	4,934,000
Tax benefit realized from tax deductions from exercises of stock options	6,385,000	5,531,000	4,792,000
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 Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense related to nonvested common shares	890,000	598,000	370,000
Unrecognized compensation cost related to nonvested common shares	0
Long Term Incentive Compensation Plan [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	$ 69.25	$ 59.59	$ 42.12
Compensation expense charged	4,304,000	3,588,000	4,235,000
Cumulative amount recorded in shareholders' equity related to Long-Term Incentive Plan	7,570,000	8,083,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to nonvested common shares	2,074,000
Weighted average period expected to be amortized, non vested shares	1 year 8 months 12 days
Period for restricted shares and share units considered to be forfeited for retirees	12 months
Period for pro-rata vesting of shares or units for non-employee directors	1 year
Expense related to nonvested common shares	1,784,000	2,464,000	1,724,000
Common share dividends amount included in compensation cost	52,000	57,000	53,000
Employee Deferred Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common share dividends amount included in compensation cost	$ 129,000	$ 79,000	$ 35,000
Percentage of base pay and annual incentive compensation deferred	100.00%
Percentage of long term incentive compensation plan deferred	90.00%