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Derivative Financial Instruments - Foreign currency risk hedging (Details) $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 22, 2022 item | May 09, 2022 item | Jun. 30, 2021 item | Dec. 31, 2023 USD ($) item | Dec. 31, 2022 item | Dec. 31, 2021 item
P-Class vessels |  |  |  |  |  |
Fair value measurement hierarchy of the Group's assets and liabilities |  |  |  |  |  |
Number of newbuilds |  |  | 2 |  |  |
A-Class vessels |  |  |  |  |  |
Fair value measurement hierarchy of the Group's assets and liabilities |  |  |  |  |  |
Number of newbuilds | 2 | 2 |  |  |  |
Currency risk |  |  |  |  |  |
Fair value measurement hierarchy of the Group's assets and liabilities |  |  |  |  |  |
Average USD:EUR rate |  |  |  | 0.9187 | 0.9187 |
Notional amount | $ |  |  |  | $ 300 |  |
Total coverage | $ |  |  |  | $ 500 |  |
Percentage of foreign exchange risk mitigated by the total coverage |  |  |  | 50.00% |  |
Currency risk | Zero cost collar contracts |  |  |  |  |  |
Fair value measurement hierarchy of the Group's assets and liabilities |  |  |  |  |  |
Number of zero cost collar contracts entered |  |  |  | 6 |  |
Currency risk | Zero cost collar contracts | Minimum |  |  |  |  |  |
Fair value measurement hierarchy of the Group's assets and liabilities |  |  |  |  |  |
Average USD:EUR rate secured by the zero cost collar contract |  |  |  | 0.8695 |  |
Currency risk | Zero cost collar contracts | Maximum |  |  |  |  |  |
Fair value measurement hierarchy of the Group's assets and liabilities |  |  |  |  |  |
Average USD:EUR rate secured by the zero cost collar contract |  |  |  | 0.9466 |  |
Currency risk | P-Class vessels |  |  |  |  |  |
Fair value measurement hierarchy of the Group's assets and liabilities |  |  |  |  |  |
Number of newbuilds |  |  |  |  |  | 2
Currency risk | A-Class vessels |  |  |  |  |  |
Fair value measurement hierarchy of the Group's assets and liabilities |  |  |  |  |  |
Number of newbuilds |  |  |  |  | 2 |

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