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Restructuring Charges - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
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Mar. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Jun. 30, 2023 USD ($) Rate | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges | $ 0 |  | $ 90 |  |  | $ 11,321 | $ 8,562
Q1 2025 Restructuring Plan |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Severance Costs |  | $ 11,300 |  |  |  |  |
Q1 2024 Restructuring Plan |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Severance Costs |  |  |  | $ 9,800 |  |  |
Q3 2023 Restructuring Plan |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  |  |  |  | $ 56,700 |  |
Severance Costs |  |  |  |  | 53,200 |  |
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% |  |

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