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v3.24.3

Senior Notes (Details) - USD ($) | Dec. 17, 2021 | Dec. 06, 2019 | May 08, 2018 | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |
Total Senior Notes |  |  |  | $ 1,300,000,000 | $ 1,300,000,000
The 2018 Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total Senior Notes |  |  |  | 400,000,000 | 400,000,000
Fair value |  |  |  | 399,500,000 | 386,000,000
The 2019 and 2021 Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total Senior Notes |  |  |  | 900,000,000 | 900,000,000
Fair value |  |  |  | 864,000,000 | 803,250,000
Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
2026 |  |  |  | 400,000,000 |
2027 |  |  |  | 0 |
2028 |  |  |  | 900,000,000 |
Fair value |  |  |  | $ 1,263,500,000 | $ 1,189,250,000
Senior Notes | The 2018 Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 400,000,000 |  |
Interest rate |  |  | 5.25% |  |
Maturity date |  |  | May 15, 2026 |  |
Senior Notes | May 2018 Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 350,000,000 |  |
Interest rate |  |  | 4.00% |  |
Maturity date |  | Jun. 15, 2028 |  |  |
Senior Notes | Senior Notes December 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Face Amount | $ 550,000,000 |  |  |  |
Interest rate | 4.00% |  |  |  |
Maturity date | Jun. 15, 2028 |  |  |  |

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