Contingent Liabilities, Commitments and Legal Matters (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024	Jul. 31, 2024
Loss Contingencies [Line Items]
Standby repurchase obligations amount	$ 3,560,852		$ 3,560,852		$ 3,642,137
Term of commitments (in months)			18 months
Repurchase and guarantee reserve balances	13,727		$ 13,727		$ 14,356
Losses on repurchase agreements	0	$ 2,892	0	$ 6,060
General and Administrative Expense
Loss Contingencies [Line Items]
Expense recorded related to product recall costs	$ 0	$ 4,200	$ 0	$ 14,200