Stock-based Compensation - Fair Value Assumptions of Stock Options (Detail) (Stock Options [Member])	9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility, Minimum	40.10%	45.30%
Expected volatility, Maximum	44.70%	46.90%
Risk-free interest rate, Minimum	1.51%	0.75%
Risk-free interest rate, Maximum	1.79%	0.90%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.98%	0.97%
Expected life of the option (in years)	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	1.03%	1.01%
Expected life of the option (in years)	6 years 1 month 6 days	6 years 1 month 6 days