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Contingent Liabilities, Commitments and Legal Matters (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2023 | Apr. 30, 2022 | Jul. 31, 2022
Loss Contingencies [Line Items] |  |  |  |  |
Standby repurchase obligations amount | $ 4,444,812 |  | $ 4,444,812 |  | $ 4,308,524
Term of commitments |  |  | 18 months |  |
Repurchase and guarantee reserve balances | 13,701 |  | $ 13,701 |  | $ 11,346
Selling, General and Administrative Expenses |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Expense recorded related to product recall costs | $ 0 | $ 0 | $ 0 | $ 32,125 |

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