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GENERAL AND SIGNIFICANT ACCOUNTING POLICIES - PREPAID EXPENSES AND OTHER ASSETS (Details) - USD ($)
$ in Millions
Apr. 19, 2024
Mar. 31, 2024
Dec. 31, 2023
Prepaid Expenses and Other Assets:      
Income tax receivables, net   $ 119.7 $ 125.2
Prepaid fuel   26.0 22.5
Prepaid insurance and insurance related receivables   16.9 19.3
Restricted cash - vessel construction obligations   2.3 2.3
Other   18.4 19.6
Total   183.3 $ 188.9
Other Long-term Assets      
Income taxes receivable   $ 118.6  
Income tax refund $ 118.6    
Interest on income tax refund $ 10.2