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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jul. 31, 2023 | Jul. 31, 2022 | Jul. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Effective income tax rate (as a percent) | 20.40% | 18.70% | 16.50%
Federal statutory tax rate (as a percent) | 21.00% | 21.00% | 21.00%
Discrete tax adjustments | $ 1,500 | $ 17,000 | $ 19,800
Deduction in FDII | 42,600 | 37,200 |
Discrete tax adjustments, prior year |  | 8,200 |
Tax benefits | 21,000 | 14,400 | 29,800
Increase in valuation allowance | 11,100 |  |
Tax credit carryforward | 41,600 | 29,900 |
Valuation allowance | 40,346 | 29,171 |
Unrecognized tax benefits that would impact effective tax rate | 45,300 | 44,200 |
Interest and penalties related to income tax | 11,700 | $ 8,900 | $ 7,200
Undistributed earnings | $ 377,700 |  |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 25 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482620/740-10-25-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 25 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482620/740-10-25-10 + Details
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