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EQUITY INVESTMENTS - Investment in ATC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Investments In ATC [Roll Forward]
Equity Investment Balance as of December 31, 2023			$ 331.2
Cash Investments			5.8	$ 6.6
Equity Earnings	$ 5.1	$ 4.7	16.5	16.1
Equity Investment Balance as of September 30, 2024	337.9		337.9
Net loss attributable to non-controlling interest	12.3	$ 16.3	39.3	$ 47.7
ATC
Investments In ATC [Roll Forward]
Equity Investment Balance as of December 31, 2023			179.7
Cash Investments			5.8
Equity Earnings			17.8
Distributed earnings			(14.0)
Amortization of the Remeasurement of Deferred Income Taxes			1.0
Equity Investment Balance as of September 30, 2024	190.3		190.3
Nobles 2
Investments In ATC [Roll Forward]
Equity Investment Balance as of December 31, 2023			151.5
Equity Earnings			(1.3)
Distributed earnings			(2.6)
Equity Investment Balance as of September 30, 2024	$ 147.6		147.6
Net loss attributable to non-controlling interest			$ 8.4

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