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RELATED PARTY TRANSACTIONS (Summary of Transactions with PBFX) (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]
Accounts receivable	$ 1,222.2		$ 1,222.2		$ 1,336.1
Accrued expenses	2,474.4		2,474.4		2,968.0
PBF Logistics LP
Related Party Transaction [Line Items]
Accounts receivable	4.7		4.7		5.2
Accrued expenses	37.9		37.9		$ 43.7
PBF Logistics LP \| Cost of products and other
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	(85.0)	$ (86.6)	(261.0)	$ (260.4)
PBF Logistics LP \| Services Agreement \| General and Administrative Expense
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	2.2	2.2	6.5	6.5
PBF Logistics LP \| Omnibus Agreement \| General and Administrative Expense
Related Party Transaction [Line Items]
Total expenses under affiliate agreements	$ 1.5	$ 2.0	$ 4.4	$ 5.9