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CAPITAL IMPROVEMENTS IN PROGRESS AND NEWBUILDINGS (Narrative) (Details) $ in Millions | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) vessel | Dec. 31, 2024 USD ($) vessel | Jun. 30, 2025 rig | Dec. 31, 2024 rig
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Number of container vessels under construction | vessel | 5 |  |  |
Interest costs capitalized | $ | $ 4.2 | $ 2.9 |  |
Construction in Progress |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Number of vessels being upgraded | 3 | 4 | 2 | 2

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