LEASES - Schedule of Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Operating Leases:
Operating right-of-use assets	$ 168,252	$ 169,942
Lease Liabilities:
Current portion of operating lease liabilities	33,433	32,632
Long-term operating lease liabilities	145,295	147,224
Total operating lease liabilities	178,728	179,856
Finance Leases:
Property, plant and equipment, net	$ 768	$ 994
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	PROPERTY, PLANT AND EQUIPMENT, net	PROPERTY, PLANT AND EQUIPMENT, net
Lease Liabilities:
Notes payable and current portion of long-term debt	$ 152	$ 280
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Notes payable and current portion of long-term debt	Notes payable and current portion of long-term debt
Long-term debt, net	$ 127	$ 184
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-Term Debt, Excluding Current Maturities	Long-Term Debt, Excluding Current Maturities
Total financing lease liabilities	$ 279	$ 464
Accumulated depreciation	$ 1,547	$ 6,769