CREDIT FACILITY AND LONG-TERM DEBT (Details)						1 Months Ended	12 Months Ended
		May 31, 2017 USD ($)	Dec. 22, 2016 USD ($)	Nov. 24, 2015 USD ($)	Feb. 09, 2012 USD ($)	Oct. 31, 2012 USD ($)	Dec. 31, 2017 USD ($)		Sep. 30, 2017 USD ($)	Jun. 30, 2017	May 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Nov. 30, 2015 USD ($)	Aug. 15, 2014 USD ($)	Jun. 30, 2014 USD ($)
Debt Instrument [Line Items]
Less—Current debt							$ 10,987,000					$ 0
Increase in borrowing capacity							2,750,000,000
Long term loan							1,662,414,000					1,601,836,000
Long-term Debt							1,662,414,000
Notes Payable, Current							$ 5,621,000		$ 6,831,000			0
2025 Senior Notes [Member]
Debt Instrument [Line Items]
Debt fixed interest rate							7.25%				7.25%
Proceeds from debt issuance		$ 711,576,000
Debt Instrument, Redemption Price, Percentage							100.00%
Long-term Debt											$ 725,000,000
Notes Payable [Member]
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment Terms, Monthly Payments to be Paid									403,000
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid									$ 3,200,000
Revolving Loan [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	[1]											350,000,000
Line of Credit [Member] | Revolving Loan [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 1,610,000,000	$ 2,635,000,000						$ 2,600,000,000	$ 2,500,000,000
Maximum borrowing capacity, as a percentage of aggregate borrowing capacity						10.00%
Alternative maximum borrowing capacity						$ 100,000,000
Effective consolidated fixed charge coverage ratio during period						1.1
Long-term Line of Credit							350,000,000	[1]				350,000,000
Line of Credit [Member] | Revolving Loan [Member] | Base Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						0.50%
Line of Credit [Member] | Revolving Loan [Member] | Base Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						1.25%
Line of Credit [Member] | Revolving Loan [Member] | LIBOR [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						1.50%
Line of Credit [Member] | Revolving Loan [Member] | LIBOR [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						2.25%
Line of Credit [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity														$ 1,500,000,000	$ 1,000,000,000
Participation Fee, Percent										1.25%				2.00%
Fronting Fee, Percent										0.25%
Line of Credit [Member] | Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Long-term Line of Credit							586,274,000					411,997,000
Notes Payable to Banks [Member]
Debt Instrument [Line Items]
Long-term Debt							$ 28,366,000					35,000,000
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Debt issued					$ 675,500,000
Debt fixed interest rate					8.25%		8.25%
Debt Instrument, Redemption Price, Percentage					100.00%
Long-term Debt	[2]						$ 0					670,867,000
2023 Senior Notes [Member]
Debt Instrument [Line Items]
Debt issued				$ 500,000,000
Debt fixed interest rate				7.00%
Proceeds from debt issuance				$ 490,000,000
Long-term Debt	[2],[3]						500,000,000					500,000,000
Financing Arrangements [Member]
Debt Instrument [Line Items]
Long-term Debt												45,969,000
Financing Arrangements [Member] | Paulsboro Catalyst Lease [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee Amount							$ 140,000
Debt fixed interest rate							2.20%
Financing Arrangements [Member] | Toledo Catalyst Lease [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee Amount							$ 178,000
Debt fixed interest rate							1.75%
Financing Arrangements [Member] | Delaware City Catalyst Lease [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee Amount							$ 210,000
Debt fixed interest rate							1.95%
Financing Arrangements [Member] | Delaware City Catalyst Lease - Palladium [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee Amount							$ 30,000
Debt fixed interest rate							2.05%
Financing Arrangements [Member] | Chalmette Catalyst Lease [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee Amount							$ 185,000
Debt fixed interest rate							3.85%
Financing Arrangements [Member] | Chalmette Catalyst Lease 2019 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee Amount							$ 171,000
Debt fixed interest rate							2.20%
Financing Arrangements [Member] | Torrance Catalyst Lease [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee Amount							$ 143,000
Debt fixed interest rate							1.78%
Financing Arrangements [Member] | Delaware City Catalyst Lease - Short Term Bridge [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee Amount							$ 3,000
Debt fixed interest rate							1.69%
Financing Arrangements [Member] | Delaware City Catalyst Lease - Long Term Bridge [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee Amount							$ 117,000
Debt fixed interest rate							1.69%
PBF Rail Logistics Company LLC [Member] | Notes Payable to Banks [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 35,000,000
Debt instrument term			5 years
Long-term Debt	[1]						$ 28,366,000					$ 35,000,000
PBF Logistics LP [Member] | Notes Payable to Banks [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			2.00%

[1] (b) The estimated fair value approximates carrying value, categorized as a Level 2 measurement, as these borrowings bear interest based upon short-term floating market interest rates.

[2] (a) The estimated fair value, categorized as a Level 2 measurement, was calculated based on the present value of future expected payments utilizing implied current market interest rates based on quoted prices of the Senior Notes and Senior Secured Notes.

[3] (d) As discussed in “Note 8 - Credit Facility and Debt”, these notes became unsecured following the Collateral Fall-Away Event on May 30, 2017.