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Contingencies (Narrative) (Details) R$ in Millions, $ in Millions | 1 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 31, 2023 USD ($) | Jul. 31, 2023 BRL (R$) | Dec. 31, 2019 USD ($) | Jun. 30, 2023 USD ($) jackup drillship | Dec. 31, 2022 USD ($) | Jan. 31, 2020 drillship
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of Newbuild Jackup Rigs | jackup |  |  |  | 20 |  |
Order Period |  |  |  | 10 years |  |
Percentage of Down Payment Paid for ARO Newbuilds |  |  |  | 25.00% |  |
ARO Rigs Under Construction | drillship |  |  |  | 2 |  | 2
Maximum Contingent Contributions To Joint Venture |  |  |  | $ 1,250.0 |  |
Letters of credit outstanding, amount |  |  |  | 100.4 |  |
Deposit Liabilities, Collateral Issued, Financial Instruments |  |  |  | $ 16.2 | $ 20.7 |
Litigation Settlement, Amount Awarded from Other Party |  |  | $ 200.0 |  |  |
Subsequent Event |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 127.0 | R$ 601.0 |  |  |  |

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