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VESSEL AND CAPITALIZED DRY-DOCKING - Narrative (Details)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
vessel
Jun. 30, 2023
USD ($)
vessel
Dec. 31, 2023
USD ($)
vessel
Disclosure of detailed information about property, plant and equipment [line items]      
Proceeds from disposal of non-current assets held for sale $ 88.4 $ 15.3 $ 166.4
Non-current assets held for sale      
Disclosure of detailed information about property, plant and equipment [line items]      
Number of vessels sold during period | vessel 1 1 8
Gains on disposals of property, plant and equipment $ 27.6 $ 3.5 $ 50.4
Number of vessels that were held for sale at the end of the previous reporting period that were delivered to new owners during the year | vessel 1 1 3
Non-current assets or disposal groups classified as held for sale or as held for distribution to owners $ 12.4 $ 10.8 $ 47.2
Vessels and capitalized dry-docking      
Disclosure of detailed information about property, plant and equipment [line items]      
Capitalized dry-docking costs 81.0 63.5 75.1
Disposals 58.5 11.7 111.4
Other plant and operating equipment | Administrative Expenses      
Disclosure of detailed information about property, plant and equipment [line items]      
Depreciation expense related to administrative expense 0.7 1.7 2.5
Land and buildings | Administrative Expenses      
Disclosure of detailed information about property, plant and equipment [line items]      
Depreciation expense related to administrative expense $ 1.3 $ 1.2 $ 2.5