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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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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 340 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479483/340-40-50-3 + Details
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