Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Australian credit facility	$ 13,433	$ 12,788
Line of Credit, Current	31,250	25,000
Short-term borrowings and current portion of long-term debt	44,683	37,788
Long-term portion:
Less: financing costs, net	2,592	1,690
Long-term debt, net	879,146	996,109
Total debt	923,829	1,033,897
Revolving Credit Facility
Long-term portion:
Long-term debt, gross	125,000	176,811
Term loan under credit facility
Long-term portion:
Term facility	437,500	468,750
Term Facility [Member]
Long-term portion:
Term facility	109,938	109,938
Receivables Securitization Facility
Long-term portion:
Long-term debt, gross	$ 209,300	$ 242,300