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Stockholder's Equity - Stock Repurchase (Details) - Stock Repurchase Program 2011 - shares | 12 Months Ended | 154 Months Ended |
--- | --- | --- | ---
Jul. 31, 2024 | Jul. 31, 2023 | Jul. 31, 2022 | Jul. 31, 2024 | Sep. 22, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Additional common stock authorized for repurchase (in shares) |  |  |  |  | 320,000,000
Common stock authorized for repurchase (in shares) |  |  |  |  | 784,000,000
Number of shares repurchased (in shares) | 0 | 0 | 0 | 458,196,792 |
Number of shares available for repurchase (in shares) | 325,803,208 |  |  | 325,803,208 |

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