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Equity Method Investment In ARO Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) jackup | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) jackup | Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |
Number of Rigs Owned by ARO | jackup | 7 |  | 7 |
Due from Joint Ventures, Noncurrent | $ 452.8 |  | $ 452.8 | $ 452.9
Contracts Terms On Purchased Rigs |  |  | 15 years |
Contracts On Purchased Rigs, Terms For Renewal And Repricing |  |  | 3 years |
Number of jackups leased by ARO | jackup | 9 |  | 9 |
Number of Newbuild Jackup Rigs | jackup | 20 |  | 20 |
Order Period |  |  | 10 years |
Maximum Contingent Contributions To Joint Venture | $ 1,250.0 |  | $ 1,250.0 |
Minimum Renewal Contract Terms For NewBuild Rigs |  |  | 8 years |
Equity Method Investment Summarized Financial Information Accounts Receivable | 8.6 |  | $ 8.6 | 21.8
Due from Joint Ventures |  |  |  | 14.2
Equity Method Investment Summarized Financial Information Accounts Payable |  |  |  | $ 0.7
Equity Method Investment Summarized Financial Information Interest Income | 4.6 | $ 5.1 | 9.2 |
Equity Method Investment Summarized Financial Information Interest Receivable | $ 9.2 |  | $ 9.2 |
ARO |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity Method Investment, Ownership Percentage | 50.00% |  | 50.00% |
ARO |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Lease revenue | $ 19.9 | $ 18.3 | $ 41.4 |

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