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Restructuring and Other Charges (Credits), Net - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring Charges |  |  | $ 32,400
Sublease Income | $ 1,436 | $ 4,749 | 4,600
Payments for restructuring |  |  | 40,800
Restructuring and other charges (credits), net | $ (802) | $ (460) | $ 36,234
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Restructuring and other charges (credits), net
Saas Transformation |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Other charges for professional fees |  |  | $ 5,100
Impairment and Accretion Exited Lease Facilities |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Sublease Income |  |  | 1,300
Employee Severance and Related Benefits |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Payments for restructuring |  |  | 34,000
Restructured Facilities |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Payments for restructuring |  |  | 4,300
Restructuring Plan 2022 |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Payments for other professional fees |  |  | $ 2,500

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