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REVENUE FROM CONTRACTS WITH CUSTOMERS - Narrative (Details) $ in Thousands		12 Months Ended
	Nov. 12, 2021 USD ($) rig	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Revenue From Contract With Customer [Line Items]
Revenue from performance contracts		$ 1,200,000	$ 1,200,000	$ 700,000
Performance bonuses recognized		56,600	47,300	38,800
Early termination revenue		13,400	2,300	700
Drilling services		2,746,128	2,862,677	$ 2,049,841
Capitalized fulfillment costs		$ 19,200	11,400
Period of unsatisfied performance obligations represented in backlog contracts with month-to-month terms		1 month
Accounts receivable payment period		30 days
YPF S.A.
Revenue From Contract With Customer [Line Items]
Litigation settlement, amount awarded from other party	$ 11,000
Drilling service contract, number of rigs | rig	3
Revenue recognized	$ 5,400
Drilling services			$ 16,400

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