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RELATED PARTY TRANSACTIONS (Summary of Transactions with PBFX) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Related Party Transaction [Line Items]
Accounts receivable	$ 1,133.2		$ 1,141.0
Accrued expenses	2,574.7		2,465.3
PBF Logistics LP
Related Party Transaction [Line Items]
Accounts receivable	5.0		6.3
Accrued expenses	38.4		$ 39.6
PBF Logistics LP \| Cost of Sales [Member]
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	(85.2)	$ (86.9)
PBF Logistics LP \| Services agreement \| General and Administrative Expense
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	2.2	2.2
PBF Logistics LP \| Omnibus agreement \| General and Administrative Expense
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	$ 1.5	$ 1.5