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Income Taxes - Additional information (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jul. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2023 | Jul. 31, 2022
Operating Loss Carryforwards [Line Items] |  |  |  |
Excess tax expense (benefits) related to stock-based compensation | $ (143) | $ (183) | $ (32) |
Valuation allowance | 290 | 227 |  |
Increase (decrease) in valuation allowance | 63 | (8) |  |
Unrecognized tax benefits | 394 | 327 | 246 | $ 216
Favorable net impact to income tax expense due to recognition of tax benefits | 276 |  |  |
Long term income tax receivable | 61 | 66 |  |
Domestic Country |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards | 54 |  |  |
State and Local Jurisdiction |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Excess tax expense (benefits) related to stock-based compensation | 23 | $ 30 | $ 6 |
Valuation allowance | 6 |  |  |
Operating loss carryforwards | 137 |  |  |
Deferred tax asset net operating loss carryforward | 9 |  |  |
Foreign Tax Authority |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards | 18 |  |  |
Research Tax Credit Carryforward | State and Local Jurisdiction |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred tax assets, tax credit carryforwards | $ 426 |  |  |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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