COMMITMENTS AND CONTINGENCIES (Details) gallon in Millions										12 Months Ended
	Aug. 14, 2018 USD ($)	May 18, 2018 USD ($)	Mar. 05, 2018 USD ($)	Mar. 10, 2017 USD ($)	Jan. 13, 2017 group	Jul. 01, 2016 USD ($)	Nov. 01, 2015 USD ($)	Mar. 03, 2014 ppm	Mar. 01, 2011	Dec. 31, 2018 USD ($) ppm	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2014 gallon shipment	Dec. 31, 2012 ppm	Dec. 31, 2010 ppm
Commitments and Contingencies Disclosure [Abstract]
Rent expense										$ 129,599,000	$ 125,433,000	$ 129,768,000
Lease payments to affiliates										131,819,000	97,771,000	46,511,000
Inventory purchases										68,613,000	64,050,000	$ 53,364,000
Loss Contingencies [Line Items]
Investment in equity method investee										169,472,000	171,903,000
Environmental Matters
Environmental liabilities										$ 6,502,000	$ 7,968,000
Percent of tax benefit received from increases in tax basis paid to stockholders										85.00%
Percentage of ownership in PBF LLC										100.00%
PBF Energy [Member] | Class A Common Stock [Member]
Environmental Matters
Percentage of ownership in PBF LLC										99.00%	96.70%
Environmental Issue [Member]
Environmental Matters
Environmental liabilities										$ 10,961,000	$ 10,282,000
Discount rate used for environmental liability assessment										8.00%
Undiscounted liability										$ 17,807,000
Expected future payments										$ 5,932,000
Expected payment period										5 years
Number of environmental groups appealing permits | group					2
Maximum amount of sulfur allowed in heating oil (in ppm) | ppm								10		80
Environmental Issue [Member] | Valero [Member]
Environmental Matters
Payments to acquire environmental insurance policies										$ 20,000,000
Environmental Issue [Member] | PBF Energy and Valero [Member]
Environmental Matters
Payments to acquire environmental insurance policies										$ 75,000,000
Term of insurance policies										10 years
Environmental Issue [Member] | Sunoco, Inc. [Member]
Environmental Matters
Insurance-related assessment, expiration of liability period									20 years
Environmental Issue [Member] | Torrance Refinery [Member]
Environmental Matters
Environmental liabilities										$ 130,817,000	$ 136,487,000
Expected future payments										46,189,000
Term of insurance policies						10 years
Damages sought										$ 100,000
Minimum [Member]
Loss Contingencies [Line Items]
Non-cancelable operating lease term										1 year
Maximum [Member]
Loss Contingencies [Line Items]
Non-cancelable operating lease term										20 years
Executive [Member] | Minimum [Member]
Employee Agreements
Potential lump sum payment as a multiple of base salary										1.5
Potential payment upon death or disability as a multiple of base salary										0.50
Executive [Member] | Maximum [Member]
Employee Agreements
Potential lump sum payment as a multiple of base salary										2.99
New York [Member] | Environmental Issue [Member]
Environmental Matters
Maximum amount of sulfur allowed in heating oil (in ppm) | ppm														15
PENNSYLVANIA | Environmental Issue [Member]
Environmental Matters
Maximum amount of sulfur allowed in heating oil (in ppm) | ppm															500
Chalmette Refinery [Member] | Environmental Issue [Member]
Environmental Matters
Expected payment period										30 years
Payments to acquire environmental insurance policies										$ 100,000,000
Term of insurance policies										10 years
Environmental costs recognized, recovery credited to expense										$ 3,936,000
Torrance Refinery [Member] | Environmental Issue [Member]
Environmental Matters
Payments to acquire environmental insurance policies						$ 100,000,000
Pending Litigation [Member] | SCAQMD [Member] | Environmental Issue [Member]
Environmental Matters
Damages sought	$ 515,000
Pending Litigation [Member] | SCAQMD [Member] | Environmental Remediation Contingency [Domain]
Environmental Matters
Damages sought										150,000
Pending Litigation [Member] | Louisiana Department of Environmental Quality [Member] | Environmental Remediation Contingency [Domain]
Environmental Matters
Damages sought							$ 741,000
Pending Litigation [Member] | DNREC [Member] | Environmental Remediation Contingency [Domain]
Environmental Matters
Damages sought			$ 100,000
Appealed fine amount				$ 150,000
Number of days barge shipments made													15 days
Number of barge shipments | shipment													17
Number of gallons of crude oil | gallon													35.7
Pending Litigation [Member] | Environmental Protection Agency [Member] | Environmental Remediation Contingency [Domain]
Environmental Matters
Damages sought										645,000
Settled Litigation [Member] | Louisiana Department of Environmental Quality [Member] | Environmental Remediation Contingency [Domain]
Environmental Matters
Loss Contingency, Damages Paid, Value		$ 100,000
California Department of Toxic Substance Control [Member] | Environmental Issue [Member] | Torrance Refinery [Member]
Environmental Matters
Damages sought										$ 150,000