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BUSINESS SEGMENTS AND GEOGRAPHIC INFORMATION (Tables)

12 Months Ended

Sep. 30, 2025

Segment Reporting [Abstract]

Schedule of Financial Information of Reportable Segments

Summarized financial information of our reportable segments for the fiscal years ended September 30, 2025, 2024 and 2023 is shown in the following tables:

			September 30, 2025
(in thousands)			North America Solutions						International Solutions						Offshore Solutions						Total
Revenues from external customers			$	2,361,288					$	797,851					$	520,394					$	3,679,533
Intersegment revenues			1,039						4,575						—						5,614
Total revenues			2,362,327						802,426						520,394						3,685,147
Reconciliation of revenues:
All other revenues																					163,687
Elimination of intersegment revenues																					(102,821)
Total consolidated revenues																					3,746,013
Less1:
Direct operating expenses			1,322,697						718,822						430,135						2,471,654
Depreciation & amortization			351,813						218,817						32,461						603,091
Research and development			34,140						—						—						34,140
Selling, general and administrative costs			68,047						17,232						4,619						89,898
Acquisition transaction costs			41						1,585						2,971						4,597
Asset impairment charge			1,507						132,720						—						134,227
Restructuring charges			4,121						4,945						266						9,332
Segment operating income (loss)			579,961						(291,695)						49,942						338,208
Reconciliation of segment operating income (loss):
All other operating loss																					(103,397)
Elimination of intersegment loss																					(3,999)
Segment operating income																					230,812

(1)The significant expense categories and amounts align with the segment-level information that is regularly provided to the chief operating decision maker. Intersegment expenses are included within the amounts shown.

			September 30, 2024
(in thousands)			North America Solutions						International Solutions						Offshore Solutions						Total
Revenues from external customers			$	2,445,946					$	193,975					$	106,207					$	2,746,128
Intersegment revenues			—						—						—						—
Total revenues			2,445,946						193,975						106,207						2,746,128
Reconciliation of revenues
All other revenues																					71,630
Elimination of intersegment revenues																					(61,151)
Total consolidated revenues																					2,756,607
Less1:
Direct operating expenses			1,366,471						169,033						82,668						1,618,172
Depreciation & amortization			366,446						10,863						7,530						384,839
Research and development			41,293						—						—						41,293
Selling, general and administrative costs			61,113						9,427						3,594						74,134
Segment operating income			610,623						4,652						12,415						627,690
Reconciliation of segment operating income (loss)
All other operating loss																					(1,359)
Elimination of intersegment profit																					1,261
Segment operating income																					627,592

(1)The significant expense categories and amounts align with the segment-level information that is regularly provided to the chief operating decision maker. Intersegment expenses are included within the amounts shown.

			September 30, 2023
(in thousands)			North America Solutions						International Solutions						Offshore Solutions						Total
Revenues from external customers			$	2,519,743					$	212,566					$	130,244					$	2,862,553
Intersegment revenues			—						—						—						—
Total revenues			2,519,743						212,566						130,244						2,862,553
Reconciliation of revenues
All other revenues																					77,296
Elimination of intersegment revenues																					(67,428)
Total consolidated revenues																					2,872,421
Less1:
Direct operating expenses			1,447,522						180,797						96,783						1,725,102
Depreciation & amortization			353,976						7,615						7,622						369,213
Research and development			30,507						—						—						30,507
Selling, general and administrative costs			58,397						10,401						3,035						71,833
Asset impairment charge			3,948						8,149						—						12,097
Segment operating income			625,393						5,604						22,804						653,801
Reconciliation of segment operating income
All other operating profit																					15,876
Elimination of intersegment profit																					4,671
Segment operating income																					674,348

(1)The significant expense categories and amounts align with the segment-level information that is regularly provided to the chief operating decision maker. Intersegment expenses are included within the amounts shown.

Schedule of Reconciliation of Segment Operating Income (Loss) to Income from Continuing Operations Before Income Taxes

The following table reconciles segment operating income per the tables above to income before income taxes as reported on the Consolidated Statements of Operations:

			Year Ended September 30,
(in thousands)			2025						2024						2023
Segment operating income			$	230,812					$	627,592					$	674,348
Gain on reimbursement of drilling equipment			33,398						33,309						48,173
Other loss on sale of assets			(1,541)						(5,139)						(8,016)
Corporate selling, general and administrative costs, corporate depreciation, corporate acquisition transaction costs, corporate asset impairment charges, and corporate restructuring charges			(259,351)						(198,313)						(146,197)
Operating income			3,318						457,449						568,308
Other income (expense)
Interest and dividend income			35,207						41,168						28,393
Interest expense			(107,808)						(29,093)						(17,283)
Gain (loss) on investment securities			(22,377)						13,953						11,299
Foreign currency exchange loss			(9,682)						(5,550)						(6,419)
Other			27,229						3,093						9,081
Total other income (expense)			(77,431)						23,571						25,071
Income (loss) before income taxes			$	(74,113)					$	481,020					$	593,379

Schedule of Total Assets by Reportable Segment

The following table reconciles segment total assets to total assets as reported on the Consolidated Balance Sheets:

			Year Ended September 30,
(in thousands)			2025						2024
Total assets1
North America Solutions			$	2,957,139					$	3,225,410
International Solutions			2,426,613						685,833
Offshore Solutions			714,708						73,119
Other			360,037						157,877
			6,458,497						4,142,239
Investments and corporate operations			247,241						1,639,659
			$	6,705,738					$	5,781,898

(1)Assets by segment exclude investments in subsidiaries and intersegment activity.

Schedule of Revenues from External Customers by Country

The following table presents revenues from external customers by country based on the location of service provided:

			Year Ended September 30,
(in thousands)			2025						2024						2023
Operating revenues
United States			$	2,481,593					$	2,558,814					$	2,656,617
Saudi Arabia			261,747						—						—
Norway			220,263						—						—
Oman			179,568						—						—
Argentina			155,727						142,451						137,420
Azerbaijan			129,011						—						—
Germany			57,561						—						—
Colombia			36,058						9,254						46,720
Bahrain			30,816						17,990						15,401
Kuwait			30,653						—						—
Other foreign			163,016						28,098						16,263
Total			$	3,746,013					$	2,756,607					$	2,872,421

The following table presents property, plant and equipment by country based on the location of service provided:

			Year Ended September 30,
(in thousands)			2025						2024
Property, plant and equipment, net
United States			$	2,503,045					$	2,752,325
Saudi Arabia			971,440						149,472
Oman			445,706						—
United Kingdom			71,385						—
Argentina			71,135						62,533
Germany			51,306						—
Kuwait			40,760						—
Colombia			36,723						19,243
Norway			25,431						—
Other foreign			96,143						32,704
Total			$	4,313,074					$	3,016,277

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