Stock-Based Compensation - Fair Value Assumptions of Stock Options (Detail) - Stock Options [Member]	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility, Minimum	26.00%	29.10%	30.30%
Expected volatility, Maximum	29.20%	30.40%	39.50%
Expected dividend yield		1.54%
Risk-free interest rate, Minimum	1.89%	1.78%	1.57%
Risk-free interest rate, Maximum	2.06%	1.90%	1.85%
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected dividend yield	0.91%		1.06%
Expected life of the option (in years)	5 years 4 months 24 days	5 years 4 months 24 days	5 years 4 months 24 days
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected dividend yield	1.17%		1.10%
Expected life of the option (in years)	6 years 2 months 13 days	6 years 2 months 12 days	6 years 1 month 6 days