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v3.25.1

Debt (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Sep. 30, 2024
--- | --- | ---
Debt Instrument [Line Items] |  |
Current maturities on debt | $ 15,000 | $ 15,000
Debt issuance costs | (8,071) | (9,729)
Long-Term Debt, Excluding Current Maturities | 2,513,179 | 2,194,021
Debt, Long-Term and Short-Term, Combined Amount | 2,528,179 | 2,209,021
Senior Notes | May 2018 Senior Notes |  |
Debt Instrument [Line Items] |  |
Senior Notes, Noncurrent | 400,000 | 400,000
Senior Notes | Dec 2019 and 2021 Senior Notes |  |
Debt Instrument [Line Items] |  |
Senior Notes, Noncurrent | 900,000 | 900,000
Revolving Credit Facility | Line of Credit |  |
Debt Instrument [Line Items] |  |
Line of Credit, Noncurrent | 535,000 | 210,000
Revolving Credit Facility | Loans Payable |  |
Debt Instrument [Line Items] |  |
Loans Payable to Bank, Current | 15,000 | 15,000
Revolving Credit Facility | Loans Payable | The $300 Million Term Loan |  |
Debt Instrument [Line Items] |  |
Loans Payable to Bank, Noncurrent | 236,250 | 243,750
Revolving Credit Facility | Loans Payable | The $450 Million Term Loan |  |
Debt Instrument [Line Items] |  |
Loans Payable to Bank, Noncurrent | $ 450,000 | $ 450,000

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