Income Taxes - Provision for Income Taxes and Effective Tax Rates (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Income Tax Disclosure [Abstract]
Income before income taxes	$ 291,585	$ 339,788	$ 570,809	$ 667,031
Provision for income taxes	$ 21,637	$ 45,896	$ 32,234	$ 59,798
Effective tax rate	7.40%	13.50%	5.60%	9.00%