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Assets Under Development - Narrative (Details) - USD ($) | 1 Months Ended |
--- | --- | ---
Oct. 31, 2020 | Apr. 30, 2019 | Feb. 28, 2019 | Jun. 30, 2021
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items] |  |  |  |
Contractual obligation |  |  |  | $ 716,451,000
Gimi Conversion |  |  |  |
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items] |  |  |  |
Term of charter |  |  | 20 years |
Project extension | 11 months |  |  |
Contractual obligation |  |  |  | $ 1,500,000,000
Gimi Conversion | Gimi $700 million facility |  |  |  |
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items] |  |  |  |
Debt instrument, face amount |  | $ 700,000,000 |  |
Gimi Conversion | Keppel Capital |  |  |  |
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items] |  |  |  |
Long-term purchase commitment, percentage |  | 30.00% |  |

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