Contingent Liabilities, Commitments and Legal Matters (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Jul. 31, 2022
Loss Contingencies [Line Items]
Standby repurchase obligations amount	$ 4,408,085		$ 4,308,524
Term of commitments	18 months
Repurchase and guarantee reserve balances	$ 11,763		$ 11,346
Selling, General and Administrative Expenses
Loss Contingencies [Line Items]
Expense recorded related to product recall costs	$ 0	$ 22,000