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Debt - Long-term debt (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Debt |  |
Total debt | $ 2,539,800 | $ 2,217,300
Less: Current portion of debt and short-term borrowings | (66,900) | (89,500)
Less: Unamortized debt issuance costs | (22,600) | (14,400)
Long-term debt | 2,450,330 | 2,113,369
Credit Agreement |  |
Debt |  |
Total debt | 1,446,600 | 1,119,800
2027 Senior Notes |  |
Debt |  |
Total debt | 997,300 | 997,300
Other Debt |  |
Debt |  |
Total debt | $ 95,900 | $ 100,200

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