Income Taxes - Provision for Income Taxes and Effective Tax Rates (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Income Tax Disclosure [Abstract]
Income before income taxes	$ 396,191	$ 341,530	$ 687,308	$ 798,984
Provision (benefit) for income taxes	$ 47,181	$ 45,437	$ 40,887	$ 68,346
Effective tax rate	11.90%	13.30%	5.90%	8.60%