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RELATED PARTY TRANSACTIONS (Summary of Transactions with PBFX) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Related Party Transaction [Line Items]
Accounts receivable	$ 1,080.2		$ 1,080.2		$ 1,141.0
Accrued expenses	2,401.9		2,401.9		2,465.3
PBF Logistics LP
Related Party Transaction [Line Items]
Accounts receivable	5.7		5.7		6.3
Accrued expenses	38.2		38.2		$ 39.6
PBF Logistics LP \| Cost of Sales [Member]
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	(88.3)	$ (89.1)	(173.5)	$ (176.0)
PBF Logistics LP \| Services agreement \| General and Administrative Expense
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	2.1	2.1	4.3	4.3
PBF Logistics LP \| Omnibus agreement \| General and Administrative Expense
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	$ 1.5	$ 1.4	$ 3.0	$ 2.9