Contingent Liabilities, Commitments and Legal Matters (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023	Jul. 31, 2023
Loss Contingencies [Line Items]
Standby repurchase obligations amount	$ 3,904,068		$ 3,904,068		$ 3,893,048
Term of commitments			18 months
Repurchase and guarantee reserve balances	14,865		$ 14,865		$ 12,114
Losses on repurchase agreements	0	$ 0	6,487	$ 0
Selling, General and Administrative Expenses
Loss Contingencies [Line Items]
Gain (loss) related to litigation settlement	$ 0	$ 0	$ 16,900	$ 0