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Revenue (Tables) | 12 Months Ended
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Sep. 30, 2025
Revenue from Contract with Customer [Abstract] |
Summary of Accounts Receivable and Deferred Revenue | The following table provides information about Accounts receivable, both billed and unbilled and deferred revenue:
|  | As of |
|  | September 30, 2025 |  |  | September 30, 2024 |
Accounts receivable — billed (net of allowance for credit losses of $26,169 and $32,638 as of September 30, 2025 and 2024, respectively) |  | $ | 589,781 |  |  | $ | 665,740 |
Accounts receivable — unbilled (current) |  |  | 345,970 |  |  |  | 362,617 |
Accounts receivable — unbilled (non-current) |  |  | 104,200 |  |  |  | 75,050 |
Total Accounts receivable — unbilled |  |  | 450,170 |  |  |  | 437,667 |
Deferred revenue (current) |  |  | (118,861 | ) |  |  | (115,247 | )
Deferred revenue (non-current) |  |  | (9,889 | ) |  |  | (836 | )
Total Deferred revenue |  | $ | (128,750 | ) |  | $ | (116,083 | )

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