Stock-Based Compensation - Fair Value Assumptions of Stock Options (Detail) - Stock Options	9 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility, minimum	30.80%	24.50%
Expected volatility, maximum	32.60%	30.50%
Risk-free interest rate, minimum	0.43%	0.44%
Risk-free interest rate, maximum	0.77%	1.69%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.83%	0.87%
Expected life of the option (in years)	5 years 3 months 18 days	5 years 3 months 18 days
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.85%	1.16%
Expected life of the option (in years)	6 years 2 months 12 days	6 years 3 months 18 days