STOCKHOLDERS' AND MEMBERS' EQUITY STRUCTURE (Summary of PBF LLC Units) (Details) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Series C Units [Member]
Class of Stock [Line Items]
Shares issued for share-based compensation			12,766
PBF LLC [Member] | Series A Units [Member]
Class of Stock [Line Items]
Common Unit, Outstanding	3,920,902	4,985,358	9,170,696
Shares issued for share-based compensation	64,373	25,550	149,974
Limited Liability Company (LLC) Members' Equity, Unit-Based Compensation And Exercise Of Warrants, Surrender of Units for Taxes			(1,481)
Limited Liability Company (LLC) Members' Equity, Unit-Based Compensation And Exercise Of Warrants, Repurchase of Units	(21,231)
Exchange of PBF Energy Company LLC Series A Units for Class A common stock, shares	(196,580)	(1,090,006)	(529,178)
Common Unit, Outstanding	3,767,464	3,920,902	4,985,358
PBF LLC [Member] | Series B Units [Member]
Class of Stock [Line Items]
Common Unit, Outstanding	1,000,000	1,000,000	1,000,000
Common Unit, Outstanding	1,000,000	1,000,000	1,000,000
PBF LLC [Member] | Series C Units [Member]
Class of Stock [Line Items]
Common Unit, Outstanding	109,204,047	97,781,933	81,981,119
Shares issued for share-based compensation	462,500	11,650
Units allocated to management	702,404	320,458	247,720
Limited Liability Company (LLC) Members' Equity, Unit-Based Compensation And Exercise Of Warrants, Surrender of Units for Taxes			(8,732)
Limited Liability Company (LLC) Members' Equity, Unit-Based Compensation And Exercise Of Warrants, Repurchase of Units	21,231		(284,771)
Exchange of PBF Energy Company LLC Series A Units for Class A common stock, shares	196,580	1,090,006	529,178
Common Unit, Outstanding	110,586,762	109,204,047	97,781,933
Secondary Public Offering [Member] | PBF LLC [Member] | Series A Units [Member]
Class of Stock [Line Items]
Stock issued during period, shares			(3,804,653)
Secondary Public Offering [Member] | PBF LLC [Member] | Series C Units [Member]
Class of Stock [Line Items]
Stock issued during period, shares			3,804,653
Public Offering [Member] | PBF LLC [Member] | Series C Units [Member]
Class of Stock [Line Items]
Stock issued during period, shares		10,000,000	11,500,000