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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		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Operating revenues	$ 687,943	$ 769,222	$ 1,365,090	$ 1,488,859
United States
Segment Reporting Information [Line Items]
Operating revenues	640,689	712,302	1,262,306	1,376,475
Argentina
Segment Reporting Information [Line Items]
Operating revenues	34,024	35,490	69,900	69,324
Colombia
Segment Reporting Information [Line Items]
Operating revenues	1,242	13,652	8,945	30,021
Bahrain
Segment Reporting Information [Line Items]
Operating revenues	4,535	4,198	9,032	6,467
United Arab Emirates
Segment Reporting Information [Line Items]
Operating revenues	3,430	2,542	5,795	4,879
Australia
Segment Reporting Information [Line Items]
Operating revenues	2,646	0	6,958	0
Other foreign
Segment Reporting Information [Line Items]
Operating revenues	$ 1,377	$ 1,038	$ 2,154	$ 1,693

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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