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v3.23.3

Borrowings - Schedule of Debt Redemption (Details) | 12 Months Ended |
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022
6.750% Senior Notes (2025 Notes) | Senior Notes |  |
Debt Instrument, Redemption [Line Items] |  |
Stated interest rate on debt instrument | 6.75% | 6.75%
5.875% Senior Notes (2027 Notes) | Senior Notes |  |
Debt Instrument, Redemption [Line Items] |  |
Stated interest rate on debt instrument | 5.875% | 5.875%
7.250% Senior Notes (2029 Notes) | Senior Notes |  |
Debt Instrument, Redemption [Line Items] |  |
Stated interest rate on debt instrument | 7.25% | 7.25%
Senior Notes | 6.750% Senior Notes (2025 Notes) | Debt Instrument, Redemption, Period One |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 100.00% |
Senior Notes | 6.750% Senior Notes (2025 Notes) | Debt Instrument, Redemption, Period Two |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 105.063% |
Senior Notes | 6.750% Senior Notes (2025 Notes) | Debt Instrument, Redemption, Period Three |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 103.375% |
Senior Notes | 6.750% Senior Notes (2025 Notes) | Debt Instrument, Redemption, Period Four |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 101.688% |
Senior Notes | 6.750% Senior Notes (2025 Notes) | Debt Instrument, Redemption, Period Five |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 100.00% |
Senior Notes | 5.875% Senior Notes (2027 Notes) | Debt Instrument, Redemption, Period One |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 100.00% |
Senior Notes | 5.875% Senior Notes (2027 Notes) | Debt Instrument, Redemption, Period Two |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 102.938% |
Senior Notes | 5.875% Senior Notes (2027 Notes) | Debt Instrument, Redemption, Period Three |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 101.958% |
Senior Notes | 5.875% Senior Notes (2027 Notes) | Debt Instrument, Redemption, Period Four |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 100.979% |
Senior Notes | 5.875% Senior Notes (2027 Notes) | Debt Instrument, Redemption, Period Five |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 100.00% |
Senior Notes | 7.250% Senior Notes (2029 Notes) | Debt Instrument, Redemption, Period One |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 100.00% |
Senior Notes | 7.250% Senior Notes (2029 Notes) | Debt Instrument, Redemption, Period Two |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 103.625% |
Senior Notes | 7.250% Senior Notes (2029 Notes) | Debt Instrument, Redemption, Period Three |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 102.417% |
Senior Notes | 7.250% Senior Notes (2029 Notes) | Debt Instrument, Redemption, Period Four |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 101.208% |
Senior Notes | 7.250% Senior Notes (2029 Notes) | Debt Instrument, Redemption, Period Five |  |
Debt Instrument, Redemption [Line Items] |  |
Redemption price percentage | 100.00% |

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