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DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Details)	12 Months Ended
	Dec. 31, 2020 reportable_segment shares	Dec. 31, 2019 shares	Apr. 29, 2019	Dec. 31, 2018 shares	Aug. 14, 2018 shares	Jul. 31, 2018	Jul. 30, 2018	Dec. 31, 2017 shares
Description of Business [Line Items]
Ownership Percentage of Equity Held	100.00%	100.00%		100.00%	100.00%			100.00%
Limited Partners' Capital Account, Ownership Percentage	100.00%	100.00%	100.00%	100.00%		100.00%	100.00%	100.00%
Number Of Reporting Segments | reportable_segment	2
Shares outstanding (in shares)	121,072,288	121,020,288		121,080,516	121,059,199			114,332,995
PBF Energy [Member] | Class A Common Stock [Member]
Description of Business [Line Items]
Ownership Percentage of Equity Held	99.20%	99.00%
Shares outstanding (in shares)	120,101,641	119,804,971		119,874,191	119,852,874			110,565,531
PBF LLC [Member] | Series C Units [Member]
Description of Business [Line Items]
Shares outstanding (in shares)	120,122,872
PBF LLC [Member] | Series A Units [Member]
Description of Business [Line Items]
Ownership Percentage of Equity Held	0.80%	1.00%		1.00%	1.00%			3.30%
Shares outstanding (in shares)	970,647	1,215,317		1,206,325	1,206,325			3,767,464
Limited Partner [Member] | PBF LLC [Member]
Description of Business [Line Items]
Limited Partners' Capital Account, Ownership Percentage	48.00%	48.20%	48.30%	44.00%		44.00%	42.10%	44.10%

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