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v3.25.3

Goodwill and Intangible Assets, Net - Additional Information (Detail) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2025 USD ($) Segment | Sep. 30, 2024 USD ($) Segment | Sep. 30, 2023 USD ($) Segment
Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of goodwill | $ 0 |  | $ 0 | $ 0
Number of operating segment | Segment | 1 |  | 1 | 1
Amortization of purchased intangible assets and other | $ 62,424 | [1] | $ 62,052 | $ 57,156
Intangible Assets [Member] |  |  |  |
Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Amortization of purchased intangible assets and other | $ 61,469 |  | $ 64,266 | $ 67,677
[1] | or further details see Note 22 "Segment Information and Revenue from Significant Customers".

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