FAIR VALUE MEASUREMENTS (Fair Value and Carrying Value of Debt) (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Sep. 09, 2026 |
Dec. 31, 2025 |
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| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||||||||||
| Long-term debt, gross | $ 2,190.0 | $ 2,201.6 | |||||||||||||
| Unamortized deferred financing costs | (63.1) | (41.0) | |||||||||||||
| Unamortized discount | (8.5) | (12.3) | |||||||||||||
| Long-term debt | 2,097.7 | 2,148.3 | |||||||||||||
| Long-term debt, Fair value | 2,248.6 | 2,200.2 | |||||||||||||
| Current debt | (20.7) | 0.0 | |||||||||||||
| Current maturities, Fair value | (20.7) | 0.0 | |||||||||||||
| Long-term debt excluding current maturities, Fair value | 2,227.9 | 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],[4] | 800.0 | 800.0 | ||||||||||||
| Long-term debt, Fair value | [3] | 848.9 | 824.3 | ||||||||||||
| 2030 7.875% Senior Notes | |||||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||||||||||
| Long-term debt | [2],[3] | 0.0 | 500.0 | ||||||||||||
| Long-term debt, Fair value | [2],[3] | 0.0 | 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] | 495.7 | 0.0 | ||||||||||||
| 2032 Exchangeable Notes | |||||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||||||||||
| Long-term debt | [3] | 550.0 | 0.0 | ||||||||||||
| Long-term debt, Fair value | [3] | 572.8 | 0.0 | ||||||||||||
| Promissory Note | |||||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||||||||||
| Long-term debt | 340.0 | [3],[5] | $ 341.1 | 0.0 | [3],[5] | ||||||||||
| Long-term debt, Fair value | [3],[5] | $ 331.2 | $ 0.0 | ||||||||||||
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