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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)
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
Unamortized discount (2.7) (3.2)
Revolving Credit Facility    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Lines of credit, Fair Value 200.0 0.0
Long-term line of credit 200.0 0.0
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
[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.
(b) 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.