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Restructuring Charges - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) Rate | Jun. 30, 2022 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 56,648 | $ 0 | $ 65,388 | $ 7,909
Q3 2023 Restructuring Plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | 56,700 |
Severance Costs |  |  | 53,193 |
Other Restructuring Costs |  |  | $ 3,500 |
Restructuring and Related Cost, Number of Positions Eliminated |  |  | 620 |
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent | Rate |  |  | 9.00% |
Q1 2023 Restructuring Plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | $ 8,700 |
Severance Costs |  |  | $ 8,740 |
Q1 2022 Restructuring Plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  |  | 7,900
Severance Costs |  |  |  | $ 7,909

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