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Segment Information - Revenues by Geographic Region (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Schedule of Revenues by Geographic Region [Line Items] |  |  |  |
Revenue from contract with customer, excluding assessed tax | $ 731,123 | $ 681,354 | $ 1,497,612 | $ 1,373,951
United States |  |  |  |
Schedule of Revenues by Geographic Region [Line Items] |  |  |  |
Revenue from contract with customer, excluding assessed tax | 373,789 | 363,847 | 781,177 | 713,922
Other Americas [Member] |  |  |  |
Schedule of Revenues by Geographic Region [Line Items] |  |  |  |
Revenue from contract with customer, excluding assessed tax | 22,337 | 21,718 | 46,922 | 48,033
Total Americas |  |  |  |
Schedule of Revenues by Geographic Region [Line Items] |  |  |  |
Revenue from contract with customer, excluding assessed tax | 396,126 | 385,565 | 828,099 | 761,955
EMEA |  |  |  |
Schedule of Revenues by Geographic Region [Line Items] |  |  |  |
Revenue from contract with customer, excluding assessed tax | 213,971 | 178,386 | 418,358 | 371,749
APAC |  |  |  |
Schedule of Revenues by Geographic Region [Line Items] |  |  |  |
Revenue from contract with customer, excluding assessed tax | $ 121,026 | $ 117,403 | $ 251,155 | $ 240,247

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