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Summary of Significant Accounting Policies - Schedule of Held to Maturity Securities (Details) - USD ($) $ in Thousands | Jul. 31, 2025 | Jul. 31, 2024
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Accounting Policies [Abstract] |  |
Amortized Cost | $ 2,008,539 | $ 1,908,047
Gross Unrealized Gains | 15,575 | 18,298
Fair Value | $ 2,024,114 | $ 1,926,345

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