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BUSINESS SEGMENTS AND GEOGRAPHIC INFORMATION - Revenues from External Customers and Long-Lived Assets by Country (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Operating revenues	$ 677,147	$ 719,637
United States
Segment Reporting Information [Line Items]
Operating revenues	621,617	664,173
Argentina
Segment Reporting Information [Line Items]
Operating revenues	35,876	33,834
Colombia
Segment Reporting Information [Line Items]
Operating revenues	7,703	16,369
Bahrain
Segment Reporting Information [Line Items]
Operating revenues	4,497	2,269
United Arab Emirates
Segment Reporting Information [Line Items]
Operating revenues	2,365	2,337
Australia
Segment Reporting Information [Line Items]
Operating revenues	4,312	0
Other foreign
Segment Reporting Information [Line Items]
Operating revenues	$ 777	$ 655

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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