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Equity Method Investment In ARO Narrative (Details) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2024 USD ($) drillship rigs jackup | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) | Jan. 31, 2020 drillship
Schedule of Equity Method Investments [Line Items] |  |  |  |
Total Number Of Contract Drilling Rigs | 53 |  |  |
Number of Newbuild Jackup Rigs | jackup | 20 |  |  |
Order Period | 10 years |  |  |
ARO Rigs Under Construction | drillship | 2 |  |  | 2
Shareholder Notes Payable, Term | 10 years |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.10% |  |  |
Accounts payable - trade | $ 394.2 |  | $ 400.1 |
LONG-TERM NOTES RECEIVABLE FROM ARO | $ 289.3 |  | 282.3 |
Other |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Total Number Of Contract Drilling Rigs | 9 |  |  |
ARO |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Total Number Of Contract Drilling Rigs | 8 |  |  |
ARO | Asset under Construction |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Number of ARO newbuild rigs ordered | rigs | 1 |  |  |
ARO |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Lease Revenue From Related Party | $ 19.0 | $ 18.8 |  |
Accounts payable - trade | 58.7 |  | 57.7 |
LONG-TERM NOTES RECEIVABLE FROM ARO | $ 289.3 |  | $ 282.3 |
ARO |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity Method Investment, Ownership Percentage | 50.00% |  |  |

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