Contingent Liabilities, Commitments and Legal Matters (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Jul. 31, 2025
Commitments and Contingencies Disclosure [Abstract]
Standby repurchase obligations amount	$ 3,510,176		$ 3,484,235
Term of commitments (in months)	18 months
Repurchase and guarantee reserve balances	$ 18,076		$ 17,508
Losses on repurchase agreements	$ 0	$ 0