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REVENUE FROM CONTRACTS WITH CUSTOMERS - Narrative (Details) $ in Thousands		12 Months Ended
	Nov. 12, 2021 USD ($) rig	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Revenue From Contract With Customer [Line Items]
Revenue from performance contracts		$ 1,200,000	$ 700,000	$ 300,000
Performance bonuses recognized		47,300	38,800	17,400
Early termination revenue		2,300	700	7,700
Drilling services		2,862,677	2,049,841	$ 1,210,800
Capitalized fulfillment costs		$ 11,400	6,300
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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Contract with Customer Liability Revenue Recognized Including Opening Balance on Achievement of Performance Targets

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[Line Items] for Revenue From Contract With Customer [Table]

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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