COMMITMENTS AND CONTINGENCIES (Narrative) (Details) $ in Millions		12 Months Ended
	Feb. 01, 2020	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Environmental Matters
Environmental liabilities		$ 155.8	$ 155.6
Environmental liabilities, Lont-Term		$ 140.1	141.5
Tax Receivable Agreement [Abstract]
Percent of tax benefit received from increases in tax basis paid to stockholders		85.00%
Percentage of ownership in PBF LLC		100.00%
Payable to Related Parties, Tax Receivable Agreement, Total		$ 336.6	$ 338.6
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]		Accrued expenses	Accrued expenses
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Other long-term liabilities	Other long-term liabilities
Martinez Acquistion
Contingent Consideration
Initial Term	4 years
Business combination, contingent consideration, liability			$ 147.3
Martinez Acquistion | Accrued expenses
Contingent Consideration
Business combination, contingent consideration, liability			$ 80.0
Martinez Acquisition | Accrued expenses
Contingent Consideration
Business combination, contingent consideration, liability		$ 21.6
PBF Energy | Class A Common Stock
Tax Receivable Agreement [Abstract]
Percentage of ownership in PBF LLC		99.30%	99.30%
Environmental Issue | Torrance Refinery
Environmental Matters
Environmental liabilities		$ 114.9	$ 117.0
Executive | Minimum
Employment Agreements
Potential lump sum payment as a multiple of base salary		1.50
Executive | Maximum
Employment Agreements
Potential lump sum payment as a multiple of base salary		2.99