BUSINESS SEGMENTS AND GEOGRAPHIC INFORMATION - Revenues from External Customers and Long-Lived Assets by Country (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Operating revenues	$ 723,956	$ 550,233	$ 2,212,815	$ 1,427,612
United States
Segment Reporting Information [Line Items]
Operating revenues	674,658	520,446	2,051,133	1,331,728
Argentina
Segment Reporting Information [Line Items]
Operating revenues	32,388	18,615	101,712	63,216
Columbia
Segment Reporting Information [Line Items]
Operating revenues	9,433	5,977	39,454	11,974
Bahrain
Segment Reporting Information [Line Items]
Operating revenues	4,458	2,338	10,925	14,797
United Arab Emirates
Segment Reporting Information [Line Items]
Operating revenues	2,401	2,188	7,280	3,711
Other foreign
Segment Reporting Information [Line Items]
Operating revenues	$ 618	$ 669	$ 2,311	$ 2,186