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GENERAL AND SIGNIFICANT ACCOUNTING POLICIES - PREPAID EXPENSES AND OTHER ASSETS (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Prepaid Expenses and Other Assets: |  |
Vessel fuel | $ 31.0 | $ 31.2
Prepaid insurance and insurance related receivables | 19.6 | 19.1
Prepaid operating expenses | 12.1 | 8.8
Other prepaid expenses | 10.9 | 9.9
Other assets | 2.7 | 4.9
Total | $ 76.3 | $ 73.9

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