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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Carrying value    
Fair value of financial instruments    
Cash and cash equivalents $ 122.0 $ 266.8
CCF - Cash and cash equivalent 290.8 230.7
CCF - Investments 394.6 411.9
Fixed rate debt 390.8 400.9
Fair Value Measurement    
Fair value of financial instruments    
Cash and cash equivalents 122.0 266.8
CCF - Cash and cash equivalent 290.8 230.7
CCF - Investments 395.7 412.5
Fixed rate debt 315.9 317.7
Fair Value Measurement | Quoted Prices in Active Markets (Level 1)    
Fair value of financial instruments    
Cash and cash equivalents 122.0 266.8
CCF - Cash and cash equivalent 290.8 230.7
CCF - Investments 395.7 412.5
Fair Value Measurement | Significant Observable Inputs (Level 2)    
Fair value of financial instruments    
Fixed rate debt $ 315.9 $ 317.7