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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, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Operating revenues	$ 769,222	$ 467,597	$ 1,488,859	$ 877,379
United States
Segment Reporting Information [Line Items]
Operating revenues	712,302	439,793	1,376,475	811,282
Argentina
Segment Reporting Information [Line Items]
Operating revenues	35,490	15,450	69,324	44,601
Bahrain
Segment Reporting Information [Line Items]
Operating revenues	4,198	4,826	6,467	12,459
United Arab Emirates
Segment Reporting Information [Line Items]
Operating revenues	2,542	1,524	4,879	1,524
Colombia
Segment Reporting Information [Line Items]
Operating revenues	13,652	5,622	30,021	5,997
Other foreign
Segment Reporting Information [Line Items]
Operating revenues	$ 1,038	$ 382	$ 1,693	$ 1,516

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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