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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
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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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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