SEGMENT INFORMATION (Details) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2024 USD ($) refinery	Sep. 30, 2023 USD ($)		Sep. 30, 2024 USD ($) segment refinery reportable_segment		Sep. 30, 2023 USD ($)		Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment					2
Number of operating refineries | refinery		6			6
Number of operating segments | segment					2
Revenues		$ 8,382.3	$ 10,733.5		$ 25,764.0		$ 29,186.1
Depreciation and amortization expense		161.8	143.9		464.5		432.2
Income (loss) from operations		(386.3)	1,077.1		(315.8)		2,998.7
Interest (income) expense, net		21.4	22.7		49.2		55.2
Capital expenditures (1)		152.8	190.2		770.9		940.3
Total assets		13,130.7			13,130.7				$ 14,387.8
Loss (gain) on formation of SBR equity method investment		0.0	3.2		8.7		(965.7)
Equity method investment in SBR		872.4			872.4				881.0
Renewable Diesel Facility
Segment Reporting Information [Line Items]
Capital expenditures (1)			35.0		5.6		300.3
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues		(85.1)	(86.6)		(261.0)		(260.4)
Depreciation and amortization expense		0.0	0.0		0.0		0.0
Income (loss) from operations		0.0	0.0		0.0		0.0
Interest (income) expense, net		0.0	0.0		0.0		0.0
Capital expenditures (1)		0.0	0.0		0.0		0.0
Total assets		(37.9)			(37.9)				(43.7)
Refining Group
Segment Reporting Information [Line Items]
Revenues		8,372.8	10,725.3		25,735.8		29,159.2
Refining Group | Operating Segments
Segment Reporting Information [Line Items]
Revenues		8,372.8	10,725.3		25,735.8		29,159.2
Depreciation and amortization expense		149.6	131.2		427.6		397.1
Income (loss) from operations		(341.2)	1,175.7		(217.5)		2,157.0
Interest (income) expense, net		(3.2)	10.1		(10.0)		(0.9)
Capital expenditures (1)	[1]	150.9	183.7		764.3		925.0
Total assets		11,354.8			11,354.8				12,590.6
PBF Logistics LP | Operating Segments
Segment Reporting Information [Line Items]
Revenues		94.6	94.8		289.2		287.3
Depreciation and amortization expense		8.9	8.9		27.1		27.1
Income (loss) from operations		51.3	49.6		147.4		151.2
Interest (income) expense, net		(0.5)	(0.9)		(1.5)		2.9
Capital expenditures (1)		0.9	3.4		2.6		8.5
Total assets		785.7			785.7				816.8
Corporate | Operating Segments
Segment Reporting Information [Line Items]
Revenues		0.0	0.0		0.0		0.0
Depreciation and amortization expense		3.3	3.8		9.8		8.0
Income (loss) from operations		(96.4)	(148.2)	[2]	(245.7)	[2]	690.5	[2]
Interest (income) expense, net		25.1	13.5		60.7		53.2
Capital expenditures (1)		1.0	$ 3.1		4.0		$ 6.8
Total assets	[3]	$ 1,028.1			$ 1,028.1				$ 1,024.1

[1] For the nine months ended September 30, 2024, the Company’s refining segment included $5.6 million of capital expenditures related to the Renewable Diesel Facility. For the three and nine months ended September 30, 2023, the Company’s refining segment included $35.0 million and $300.3 million, respectively, of capital expenditures related to the Renewable Diesel Facility.

[2] Income (loss) from operations within Corporate for the nine months ended September 30, 2024 includes an $8.7 million reduction of the gain associated with the formation of the SBR equity method investment. Income from operations within Corporate for the three and nine months ended September 30, 2023 includes a loss of $3.2 million and a gain of $965.7 million, respectively, associated with the formation of the SBR equity method investment.

[3] As of September 30, 2024 and December 31, 2023, Corporate assets include the Company’s Equity method investment in SBR of $872.4 million and $881.0 million, respectively