RELATED PARTY TRANSACTIONS (Summary of Transactions with SBR) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Related Party Transaction [Line Items]
Revenues	$ 8,372.8	$ 10,725.3	$ 25,735.8	$ 29,159.2
Accounts receivable	1,222.2		1,222.2		$ 1,336.1
Accrued expenses	2,474.4		2,474.4		2,968.0
St. Bernard Renewables LLC
Related Party Transaction [Line Items]
Accounts receivable	20.9		20.9		22.1
Accrued expenses	36.7		36.7		$ 28.3
St. Bernard Renewables LLC | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Related Party Transaction [Line Items]
Revenues	12.6	6.4	25.8	6.4
Purchases from related party	(69.6)	(151.3)	(234.1)	(151.3)
St. Bernard Renewables LLC | Equity Method Investment, Nonconsolidated Investee or Group of Investees | General and Administrative Expense | Operating Agreement
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	66.7	27.1	133.5	27.1
St. Bernard Renewables LLC | Equity Method Investment, Nonconsolidated Investee or Group of Investees | General and Administrative Expense | Omnibus Agreement
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	0.9	0.9	3.1	0.9
St. Bernard Renewables LLC | Equity Method Investment, Nonconsolidated Investee or Group of Investees | General and Administrative Expense | CAUSA
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	1.5	1.3	5.0	1.3
St. Bernard Renewables LLC | Equity Method Investment, Nonconsolidated Investee or Group of Investees | Cost of products and other | Lease Agreements
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	$ (2.4)	$ 0.0	$ (4.1)	$ 0.0