Commitments and Contingencies - Schedule of Mortgage Commitments (Details) - Mortgage Commitments - USD ($) $ in Thousands	Jul. 31, 2025	Oct. 31, 2024
Aggregate mortgage loan commitments:
Total	$ 1,843,412	$ 1,837,284
Investor commitments to purchase:
Total	489,635	351,663
IRLCs
Aggregate mortgage loan commitments:
Total	312,371	168,829
Investor commitments to purchase:
Total	312,371	168,829
Non-IRLCs
Aggregate mortgage loan commitments:
Total	1,531,041	1,668,455
Mortgage loans held for sale
Investor commitments to purchase:
Total	$ 177,264	$ 182,834