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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Fair value of financial instruments      
Restricted Cash $ 2.3   $ 3.9
Carrying value      
Fair value of financial instruments      
Cash and cash equivalents 25.9 $ 134.0  
Restricted Cash 2.3 2.3  
CCF - Cash and cash equivalent 156.8 599.4  
CCF - Investments 450.0    
Fixed rate debt 430.5 440.6  
Fair Value Measurement      
Fair value of financial instruments      
Cash and cash equivalents 25.9 134.0  
Restricted Cash 2.3 2.3  
CCF - Cash and cash equivalent 156.8 599.4  
CCF - Investments 448.1    
Fixed rate debt 345.8 359.9  
Fair Value Measurement | Quoted Prices in Active Markets (Level 1)      
Fair value of financial instruments      
Cash and cash equivalents 25.9 134.0  
Restricted Cash 2.3 2.3  
CCF - Cash and cash equivalent 156.8 599.4  
CCF - Investments 448.1    
Fair Value Measurement | Significant Observable Inputs (Level 2)      
Fair value of financial instruments      
Fixed rate debt $ 345.8 $ 359.9