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FINANCING ARRANGEMENTS - Schedule of Components of Debt (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |
Principal Amount | $ 2,110.5 | $ 2,216.3
Unamortized discount and debt issuance cost | 30.5 | 37.4
Net Debt | 2,080.0 | 2,178.9
Less short-term and current portion of long-term debt | 9.5 | 2.2
Less short-term debt and current portion of long-term debt, Unamortized discount and debt issuance cost | 0.0 | 0.0
Less short-term and current portion of long-term debt | 9.5 | 2.2
Total long-term debt, net of current portion, Principal Amount | 2,101.0 | 2,214.1
Total long-term debt, net of current portion, Unamortized discount and debt issuance cost | 30.5 | 37.4
Total long-term debt, net of current portion, Net Debt | 2,070.5 | 2,176.7
Senior secured revolving credit facility due 2026 | Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Principal Amount | 0.0 | 0.0
Unamortized discount and debt issuance cost | 0.0 | 0.0
Net Debt | $ 0.0 | $ 0.0
Weighted average interest rate | 0.00% | 0.00%
Senior secured term loan due 2029 | Secured Debt |  |
Debt Instrument [Line Items] |  |
Principal Amount | $ 727.9 | $ 404.7
Unamortized discount and debt issuance cost | 18.9 | 19.2
Net Debt | $ 709.0 | $ 385.5
Weighted average interest rate | 7.88% | 6.53%
5.75% senior notes due 2025 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 5.75% | 5.75%
Principal Amount | $ 650.0 | $ 650.0
Unamortized discount and debt issuance cost | 2.8 | 4.8
Net Debt | $ 647.2 | $ 645.2
Weighted average interest rate | 5.75% | 5.75%
7.125% senior notes due 2030 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 7.125% |
Principal Amount | $ 725.0 |
Unamortized discount and debt issuance cost | 8.8 |
Net Debt | $ 716.2 |
Weighted average interest rate | 7.125% |
7.125% senior notes due 2030 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage |  | 7.125%
Principal Amount |  | $ 725.0
Unamortized discount and debt issuance cost |  | 10.1
Net Debt |  | $ 714.9
Weighted average interest rate |  | 7.125%
Senior secured term loan due 2026 | Secured Debt |  |
Debt Instrument [Line Items] |  |
Principal Amount |  | $ 426.9
Unamortized discount and debt issuance cost |  | 3.3
Net Debt |  | $ 423.6
Weighted average interest rate |  | 3.81%
Other Debt |  |
Debt Instrument [Line Items] |  |
Principal Amount | $ 7.6 | $ 9.7
Unamortized discount and debt issuance cost | 0.0 | 0.0
Net Debt | $ 7.6 | $ 9.7

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