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FAIR VALUE MEASUREMENTS (Fair Value and Carrying Value of Debt) (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Gross $ 1,501.6 $ 1,301.6
Unamortized deferred financing costs (41.6) (52.5)
Unamortized discount (2.7) (3.2)
Long-term debt 1,457.3 1,245.9
Long-term debt, Fair value 1,455.9 1,294.1
Long-term debt, Fair value 1,455.9 1,294.1
Derivative, Collateral, Obligation to Return Cash 15.1 23.7
2028 Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt 801.6 801.6
Long-term debt, Fair value [1] 765.9 779.3
2030 Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt 500.0 500.0
Long-term debt, Fair value [1] 490.0 514.8
Revolving Credit Facility    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Line of Credit 200.0 0.0
Lines of Credit, Fair Value Disclosure [2] $ 200.0 $ 0.0
[1] The estimated fair value, categorized as a Level 2 measurement, was calculated based on the present value of future expected payments utilizing implied current market interest rates based on quoted prices of the outstanding senior notes.
[2] The estimated fair value approximates carrying value, categorized as a Level 2 measurement, as these borrowings bear interest based upon short-term floating market interest rates.