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DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Details)
$ in Thousands
12 Months Ended
Aug. 14, 2018
USD ($)
shares
Dec. 19, 2016
USD ($)
shares
Oct. 13, 2015
USD ($)
shares
May 14, 2014
shares
Dec. 31, 2018
USD ($)
reportable_segment
shares
Dec. 31, 2017
USD ($)
shares
Dec. 31, 2016
USD ($)
shares
Jul. 31, 2018
Jul. 30, 2018
Aug. 17, 2016
Apr. 05, 2016
Dec. 31, 2015
shares
Description of Business [Line Items]                        
Number Of Reporting Segments | reportable_segment         2              
Public offering (in shares) 6,000,000                      
Proceeds from sale of Class A common stock, net of underwriters’ discount | $         $ 287,284 $ 0 $ 275,300          
Shares outstanding (in shares) 121,059,199 113,124,949     121,080,516 114,332,995 113,124,949         102,767,291
Ownership Percentage of Equity Held 100.00% 100.00%     100.00% 100.00% 100.00%         100.00%
Percent of tax benefit received from increases in tax basis paid to stockholders         85.00%              
Limited Partners' Capital Account, Ownership Percentage         100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00%  
PBF Energy [Member] | Class A Common Stock [Member]                        
Description of Business [Line Items]                        
Shares outstanding (in shares) 119,852,874 109,004,047     119,874,191 110,565,531 109,204,047         97,781,933
PBF Logistics LP [Member] | Common Units [Member]                        
Description of Business [Line Items]                        
Partners' Capital Account, Units, Sold in Public Offering (in shares)       2,875,000                
PBF LLC [Member] | Series C Units [Member]                        
Description of Business [Line Items]                        
Shares outstanding (in shares)         119,895,422              
PBF LLC [Member] | Series A Units [Member]                        
Description of Business [Line Items]                        
Shares outstanding (in shares) 1,206,325 4,120,902     1,206,325 3,767,464 3,920,902         4,985,358
Ownership Percentage of Equity Held 1.00% 3.60%     1.00% 3.30% 3.50%         4.90%
PBF Energy Inc. [Member] | Class A Common Stock [Member]                        
Description of Business [Line Items]                        
Ownership Percentage of Equity Held 99.00% 96.40%     99.00% 96.70% 96.50%         95.10%
IPO [Member] | PBF Logistics LP [Member] | Common Units [Member]                        
Description of Business [Line Items]                        
Partners' Capital Account, Units, Sold in Public Offering (in shares)       15,812,500                
Over-Allotment Option [Member] | PBF Energy Inc. [Member] | Class A Common Stock [Member]                        
Description of Business [Line Items]                        
Public offering (in shares)     1,500,000                  
Public Offering [Member] | PBF Energy Inc. [Member] | Class A Common Stock [Member]                        
Description of Business [Line Items]                        
Public offering (in shares) 6,000,000 10,000,000 11,500,000                  
Proceeds from sale of Class A common stock, net of underwriters’ discount | $ $ 287,284 $ 274,300 $ 344,000                  
Limited Partner [Member] | PBF LLC [Member]                        
Description of Business [Line Items]                        
Limited Partners' Capital Account, Ownership Percentage         44.00% 44.10% 44.20% 44.00% 42.10% 44.60% 49.50%