Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Long-term debt
Long-term debt, excluding finance lease obligations, Carrying Value	$ 994,000	$ 1,077,961
Long-term debt, excluding finance lease obligations, Fair Value	1,008,508	1,060,962
Level 2 \| Senior notes due 2032
Long-term debt
Long-term debt, excluding finance lease obligations, Carrying Value	600,000
Long-term debt, excluding finance lease obligations, Fair Value	615,000
Level 2 \| Senior notes due 2025
Long-term debt
Long-term debt, excluding finance lease obligations, Carrying Value		679,961
Long-term debt, excluding finance lease obligations, Fair Value		662,962
Level 2 \| Term Loan B Due 2030
Long-term debt
Long-term debt, excluding finance lease obligations, Carrying Value	394,000	398,000
Long-term debt, excluding finance lease obligations, Fair Value	393,508	398,000
Fair value measurement on recurring basis
Financial Assets
Total assets	1,207	5,828
Financial Liabilities
Total Liabilities	2,120	397
Fair value measurement on recurring basis \| Level 2 \| Other assets
Financial Assets
Interest rate swap		4,668
Fair value measurement on recurring basis \| Level 2 \| Other Liabilities
Financial Liabilities
Interest rate swap	635
Fair value measurement on recurring basis \| Non-Designated Derivative Instruments \| Level 2 \| Other current assets
Financial Assets
Foreign exchange contracts	1,207	1,160
Fair value measurement on recurring basis \| Non-Designated Derivative Instruments \| Level 2 \| Accrued Liabilities
Financial Liabilities
Foreign exchange contracts	$ 1,485	$ 397

Fair value portion of asset recognized for present right to economic benefit.

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