Contingent Liabilities, Commitments and Legal Matters (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2026	Jan. 31, 2025	Jul. 31, 2025
Commitments and Contingencies Disclosure [Abstract]
Standby repurchase obligations amount	$ 3,673,431		$ 3,673,431		$ 3,484,235
Term of commitments (in months)			18 months
Repurchase and guarantee reserve balances	19,384		$ 19,384		$ 17,508
Losses on repurchase agreements	$ 0	$ 0	$ 0	$ 0