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Credit Facilities - Narrative (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 17, 2024 | Jun. 30, 2024 | Jun. 30, 2024 | Mar. 01, 2024
Senior Notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Loss on extinguishment of debt |  | $ 3,700,000 | $ 3,700,000 |
Deferred debt financing cost, writeoff |  | 2,400,000 | 2,400,000 |
Deferred financing costs |  | 1,300,000 | 1,300,000 |
Senior Secured Notes due 2031 | Senior Notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt instrument, face amount |  |  |  | $ 550,000,000
Debt instrument, interest rate, stated percentage |  |  |  | 7.875%
Debt instrument offering price, percentage |  |  |  | 100.00%
Debt issuance costs, gross |  |  |  | $ 7,600,000
Senior Secured Notes due 2025 | Senior Notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt instrument, interest rate, stated percentage | 8.625% |  |  |
Debt remitted | $ 363,000,000 |  |  |
Revolving Credit Facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Maximum borrowing capacity under credit facilities |  | $ 1,125,000,000 | $ 1,125,000,000 |

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