Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Income Tax Disclosure [Abstract]
Effective tax rates	20.30%	21.00%	20.50%	19.80%
Income tax provision included discrete tax benefit due to share-based payment transactions	$ 1,796	$ 138	$ 2,595	$ 2,675