REVENUE FROM CONTRACTS WITH CUSTOMERS - Narrative (Details)		3 Months Ended		6 Months Ended
	Nov. 12, 2021 USD ($) rig	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) month	Mar. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Early termination revenue		$ 700,000	$ 1,900,000	$ 700,000	$ 7,700,000
Revenue		465,370,000	$ 294,026,000	872,904,000	$ 538,807,000
Capitalized cost		$ 8,100,000		$ 8,100,000		$ 4,300,000
Period of unsatisfied performance obligations represented in backlog contracts with month-to-month terms | month				1
YPF S.A.
Disaggregation of Revenue [Line Items]
Revenue	$ 16,400,000
Litigation settlement, amount awarded from other party	$ 11,000,000
Drilling service contract, number of rigs | rig	3
Revenue recognized	$ 5,400,000