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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	12 Months Ended
	Feb. 01, 2020	Jan. 31, 2025	Jun. 30, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Purchases made under contractually obligated supply agreements				$ 139.0	$ 118.9	$ 121.4
Environmental Matters
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]				Accrued expenses	Accrued expenses
Accrual for environmental loss contingencies				$ 150.8	$ 152.1
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]				Other long-term liabilities	Other long-term liabilities
Aggregate environmental liability				$ 141.1	$ 142.4
Tax Receivable Agreement [Abstract]
Percent of tax benefit received from increases in tax basis paid to stockholders				85.00%
Ownership percentage of equity held				100.00%	100.00%	100.00%
Payable to related parties, tax receivable agreement				$ 168.2	$ 293.6
Payable pursuant to Tax Receivable Agreement				0.0	125.4
Payment made to related parties, tax receivable agreement, current, including interest		$ 130.8			$ 43.0
Interest included in tax receivable payment				$ 5.4
PBF Energy Inc. \| Class A Common Stock
Tax Receivable Agreement [Abstract]
Ownership percentage of equity held				99.30%	99.30%	99.30%
Environmental Issue \| Torrance Refinery
Environmental Matters
Environmental liability				$ 108.6	$ 110.6
Executive \| Minimum
Employee Agreements
Potential lump sum payment as a multiple of base salary				1.50
Executive \| Maximum
Employee Agreements
Potential lump sum payment as a multiple of base salary				2.99
Martinez Acquistion
Contingent Consideration
Term of agreement	4 years
Payment for contingent consideration liability			$ 18.8	$ 18.8
Contingent consideration, liability						$ 21.6