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Distribution to Stockholders, As a Percent of Tax Benefit Received from Increases in Tax Basis

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Environmental Insurance Policy Coverage

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Environmental Insurance Policies, Term of Policies

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Loss Contingency Accrual, Insurance-Related Assessment, Expiration Of Liability Period

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Loss Contingency, Number Of Environmental Groups Appealing Permits

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Ownership Percentage of Equity Held

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Public Utilities, Regulatory Liabilities, Maximum Amount of Sulfur Allowed in Heating Oil

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Rate applied to the undiscounted amount of environmental loss contingencies to arrive at the present value recorded as of the balance sheet date.

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Amount of any recovery from third parties that is credited to environmental remediation costs.

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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Description of a specific regulatory liability pertaining to public utilities.

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Best estimate of the loss exposure for reasonably possible environmental contingencies at an individual site for which no accrual has been recorded.

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COMMITMENTS AND CONTINGENCIES (Details) $ in Millions								3 Months Ended	12 Months Ended
COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Feb. 22, 2019 USD ($)	Nov. 08, 2018 USD ($)	Aug. 14, 2018 USD ($)	Jun. 14, 2018 USD ($)	Jan. 13, 2017 group	Jul. 01, 2016 USD ($)	Mar. 01, 2011	Mar. 31, 2019 USD ($) ppm	Dec. 31, 2010 ppm	Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Percent of tax benefit received from increases in tax basis paid to stockholders								85.00%
Class A Common Stock [Member] \| PBF Energy [Member]
Loss Contingencies [Line Items]
Percentage of ownership in PBF LLC								99.00%		99.00%
Toledo Refining Company LLC [Member]
Loss Contingencies [Line Items]
Gain (Loss) Related to Litigation Settlement								$ 0.4
Environmental Issue [Member]
Loss Contingencies [Line Items]
Environmental liability								$ 11.7		$ 11.0
Discount rate used for environmental liability assessment								8.00%
Loss Contingency, Number Of Environmental Groups Appealing Permits \| group					2
Maximum amount of sulfur allowed in heating oil (in ppm) \| ppm								10
Public Utilities, Description of Specific Regulatory Liabilities								80
Environmental Issue [Member] \| New York [Member]
Loss Contingencies [Line Items]
Maximum amount of sulfur allowed in heating oil (in ppm) \| ppm									15
Environmental Issue [Member] \| PENNSYLVANIA
Loss Contingencies [Line Items]
Maximum amount of sulfur allowed in heating oil (in ppm) \| ppm									500
Environmental Issue [Member] \| PBF Energy and Valero [Member]
Loss Contingencies [Line Items]
Term of insurance policies								10 years
Environmental Issue [Member] \| Sunoco, Inc. [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual, Insurance-Related Assessment, Expiration Of Liability Period							20 years
Environmental Issue [Member] \| Torrance Refinery [Member]
Loss Contingencies [Line Items]
Environmental liability								$ 129.2		$ 130.8
Term of insurance policies						10 years
Chalmette Refinery [Member] \| Environmental Issue [Member]
Loss Contingencies [Line Items]
Term of insurance policies								10 years
Environmental Costs Recognized, Recovery Credited to Expense								$ 3.9
Accrual For Environmental Loss Contingencies, Expected Payment Period								30 years
Environmental Insurance Policies Coverage								$ 100.0
Maximum [Member] \| Environmental Issue [Member] \| Valero [Member]
Loss Contingencies [Line Items]
Site Contingency, Loss Exposure Not Accrued, Best Estimate								20.0
Maximum [Member] \| Environmental Issue [Member] \| PBF Energy and Valero [Member]
Loss Contingencies [Line Items]
Site Contingency, Loss Exposure Not Accrued, Best Estimate								75.0
Maximum [Member] \| Environmental Issue [Member] \| Torrance Refinery [Member]
Loss Contingencies [Line Items]
Site Contingency, Loss Exposure Not Accrued, Best Estimate						$ 100.0
Pending Litigation [Member] \| EPA and DTSC [Member] \| Environmental Remediation Contingency [Domain]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value				$ 0.2
Pending Litigation [Member] \| SCAQMD [Member] \| Environmental Issue [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 0.3		$ 0.5
Pending Litigation [Member] \| SCAQMD [Member] \| Environmental Remediation Contingency [Domain]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value								0.2
Pending Litigation [Member] \| EPA [Member] \| Environmental Issue [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		$ 0.5
Other [Member] \| Environmental Issue [Member] \| Torrance Refinery [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value								$ 0.1