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RELATED PARTY TRANSACTIONS (Summary of Transactions with PBFX) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Related Party Transaction [Line Items]
Accounts receivable	$ 1,478.6		$ 1,478.6		$ 1,336.1
Accrued expenses	2,770.7		2,770.7		2,968.0
PBF Logistics LP
Related Party Transaction [Line Items]
Accounts receivable	4.6		4.6		5.2
Accrued expenses	38.8		38.8		$ 43.7
PBF Logistics LP \| Cost of products and other
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	(89.1)	$ (84.8)	(176.0)	$ (173.8)
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	$ 1.4	$ 2.1	$ 2.9	$ 3.9