v3.26.1
FAIR VALUE MEASUREMENTS (Fair Value and Carrying Value of Debt) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, gross $ 1,800.0 $ 2,201.6
Unamortized deferred financing costs (39.9) (41.0)
Unamortized discount (11.0) (12.3)
Long-term debt 1,749.1 2,148.3
Long-term debt, Fair value 1,865.9 2,200.2
Long-term debt excluding current maturities, Fair value 1,865.9 2,200.2
Revolving Credit Facility    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term line of credit [1] 0.0 100.0
Line of credit, Fair value [1] 0.0 100.0
2028 6.00% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt [2],[3] 0.0 801.6
Long-term debt, Fair value [2],[3] 0.0 794.6
2030 9.875% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt [3] 800.0 800.0
Long-term debt, Fair value [3] 860.1 824.3
2030 7.875% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt [3] 500.0 500.0
Long-term debt, Fair value [3] 510.5 481.3
2034 7.250% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt [3] 500.0 0.0
Long-term debt, Fair value [3] $ 495.3 $ 0.0
[1] 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.
[2] As discussed in “Note 4 - Credit Facilities and Debt”, the 2028 6.00% Senior Notes were fully redeemed on June 25, 2026.
[3] 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.