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Leases - Summary of Assets Held Under Operating Lease (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Lessor, Lease, Description [Line Items]
Property, plant and equipment	$ 446,115	$ 643,617
Less: accumulated depreciation	144,162	241,486
Property, plant and equipment, net	301,953	402,131
Land
Lessor, Lease, Description [Line Items]
Property, plant and equipment	10,727	12,306
Building and building improvements
Lessor, Lease, Description [Line Items]
Property, plant and equipment	1,755	3,582
Pipelines, tanks and terminals
Lessor, Lease, Description [Line Items]
Property, plant and equipment	431,488	623,961
Other equipment
Lessor, Lease, Description [Line Items]
Property, plant and equipment	$ 2,145	$ 3,768

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Amount of accumulated depreciation of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease.

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