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FAIR VALUE MEASUREMENTS - Items not at Fair Value (Details) - Level 2 - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value of Debt Instruments
Total fair value of long term debt	$ 1,935.6	$ 1,930.9
2029 Senior Notes
Fair Value of Debt Instruments
Total fair value of long term debt	173.8	180.4
2025 Senior Notes
Fair Value of Debt Instruments
Total fair value of long term debt	95.0	98.5
2028 Term Loan B
Fair Value of Debt Instruments
Total fair value of long term debt	567.6	564.9
2028 Refinance Term Loans
Fair Value of Debt Instruments
Total fair value of long term debt	$ 1,099.2	$ 1,087.1

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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