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v3.25.3

Equity Method Investment In ARO Narrative (Details) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 drillship | Sep. 30, 2025 jackup | Sep. 30, 2025 | Dec. 31, 2024 USD ($) | Jan. 31, 2020 drillship
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Total Number Of Contract Drilling Rigs |  |  |  |  |  |  | 48 |  |
Number of Newbuild Jackup Rigs | jackup |  |  |  |  |  | 20 |  |  |
Order Period |  |  | 10 years |  |  |  |  |  |
Number of ARO newbuild rigs ordered | drillship |  |  |  |  |  |  |  |  | 2
ARO Rigs Under Construction | drillship |  |  |  |  | 1 |  |  |  |
Shareholder Notes Payable, Term |  |  | 10 years |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 2.10% |  |  |  |  |  |
Accounts payable - trade | $ 327.1 |  | $ 327.1 |  |  |  |  | $ 328.5 |
Accretion of Discount on the Notes Receivable |  |  | 18.5 | $ 33.8 |  |  |  |  |
Loss on impairment | 0.0 | $ 0.0 | 7.8 | 0.0 |  |  |  |  |
ARO Rig Currently Under Construction |  |  |  |  | 1 | 3 |  |  |
ARO |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Loss on impairment |  | 28.4 |  | 28.4 |  |  |  |  |
ARO |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Total Number Of Contract Drilling Rigs | drillship |  |  |  |  | 9 |  |  |  |
Total Number Of Contract Drilling Rigs, Leased | drillship |  |  |  |  | 7 |  |  |  |
Total Number Of Contract Drilling Rigs, Newbuild | drillship |  |  |  |  | 1 |  |  |  |
Lease Revenue From Related Party | 22.5 | $ 11.3 | 52.9 | $ 42.9 |  |  |  |  |
Accounts payable - trade | 59.7 |  | 59.7 |  |  |  |  | 43.1 |
Principal amount | $ 376.6 |  | $ 376.6 |  |  |  |  | $ 376.6 |
ARO |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 50.00% |  |

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