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Equity Method Investment In ARO Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 31, 2017 USD ($) | Sep. 30, 2019 USD ($) jackup | Jun. 30, 2019 USD ($) | Sep. 30, 2019 USD ($) jackup | Dec. 31, 2018 USD ($) | Oct. 31, 2018 rigs
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Number of Rigs Sold | rigs |  |  |  |  |  | 2
Long-term notes receivable |  | $ 452.9 |  | $ 452.9 | $ 0.0 |
Contracts terms on purchased rigs |  |  |  | 15 years |  |
Contract re-pricing and renewal |  |  |  | 3 years |  |
Number of rigs owned by ARO | jackup |  | 7 |  | 7 |  |
Number of rigs leased in operation | jackup |  | 8 |  | 8 |  |
Number of jackups leased by ARO | jackup |  | 9 |  | 9 |  |
Number of newbuild Jackup Rigs | jackup |  | 20 |  | 20 |  |
Order period |  |  |  | 10 years |  |
Maximum aggregate contribution |  | $ 1,250.0 |  | $ 1,250.0 |  |
Minimum terms for renewal |  |  |  | 8 years |  |
Amounts receivable from ARO |  | 40.6 |  | $ 40.6 |  |
Accounts payable to ARO |  | 3.0 |  | 3.0 |  |
Reimbursements included in accounts receivable |  | 14.3 |  | $ 14.3 |  |
Interest recognized as interest income |  | $ 5.8 | $ 10.9 |  |  |
ARO |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Contributions to establish join venture | $ 25.0 |  |  |  |  |
Ownership percentage |  | 50.00% |  | 50.00% |  |

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