Commitments and Contingencies - Mortgage Commitments (Details) - Mortgage Commitments - USD ($) $ in Thousands	Jan. 31, 2025	Oct. 31, 2024
Aggregate mortgage loan commitments:
Total	$ 1,921,774	$ 1,837,284
Investor commitments to purchase:
Total	392,396	351,663
IRLCs
Aggregate mortgage loan commitments:
Total	301,303	168,829
Investor commitments to purchase:
Total	301,303	168,829
Non-IRLCs
Aggregate mortgage loan commitments:
Total	1,620,471	1,668,455
Mortgage loans held for sale
Investor commitments to purchase:
Total	$ 91,093	$ 182,834