CONSOLIDATING FINANCIAL STATEMENTS OF PBF HOLDINGS (Statement of Cash Flows) (Details) - USD ($)		6 Months Ended	12 Months Ended
	Jul. 01, 2016	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 30, 2017	Feb. 09, 2012
Cash flows from operating activities:
Net income			$ 102,944,000	$ 457,200,000	$ 235,886,000
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			346,687,000	274,651,000	218,933,000
Stock-based compensation			20,212,000	21,503,000	18,296,000
Change in fair value of catalyst leases			(5,587,000)	2,247,000	(1,422,000)
Deferred income taxes			7,233,000	(12,526,000)	19,802,000
Non-cash change in inventory repurchase obligations			(31,790,000)	13,779,000	29,453,000
Non-cash lower of cost or market inventory adjustment			351,278,000	(295,532,000)	(521,348,000)
Debt extinguishment costs			0	25,451,000	0
Distribution received from subsidiaries				0
Pension and other post-retirement benefit costs			47,381,000	42,242,000	37,987,000
Equity income in investee			(17,819,000)	(14,565,000)	(5,679,000)
Distributions from equity method investee			17,819,000	20,244,000	0
(Gain) loss on sale of assets			(43,094,000)	1,458,000	11,374,000
Equity in earnings (loss) of subsidiaries			0	0	0
Changes in operating assets and liabilities:
Accounts receivable			240,433,000	(335,248,000)	(161,122,000)
Due to/from affiliates			(3,512,000)	3,233,000	9,721,000
Inventories			(1,537,000)	(54,705,000)	236,602,000
Prepaid and other current assets			(2,917,000)	(9,191,000)	(5,783,000)
Accounts payable			(110,715,000)	34,527,000	213,514,000
Accrued expenses			(232,995,000)	353,115,000	227,986,000
Deferred revenue			9,631,000	(4,845,000)	8,297,000
Other assets and liabilities			1,319,000	(51,974,000)	(20,878,000)
Net cash provided by operations			694,971,000	471,064,000	551,619,000
Cash flows from investing activities:
Expenditures for property, plant and equipment			(277,258,000)	(232,656,000)	(282,430,000)
Expenditures for deferred turnaround costs			(266,028,000)	(379,114,000)	(198,664,000)
Expenditures for other assets			(17,055,000)	(31,143,000)	(42,506,000)
Return on investment in subsidiaries				1,300,000	0
Capital contributions to subsidiaries				0	0
Proceeds from sale of assets			48,290,000	0	24,692,000
Equity method investment - return of capital			2,431,000	1,300,000	0
Increase (Decrease) Due from Other Related Parties			0
Net cash used in investing activities			(509,620,000)	(641,613,000)	(1,473,499,000)
Cash flows from financing activities:
Proceeds from members' capital contributions					0
Contributions from PBF LLC			287,000,000	97,000,000	450,300,000
Parent Distribution					0
Distribution to members			(52,587,000)	(61,149,000)	(139,434,000)
Payment received for affiliate note receivable			0	11,600,000	0
Proceeds from revolver borrowings			0	490,000,000	550,000,000
Repayments of borrowings			(350,000,000)	(490,000,000)	(200,000,000)
Proceeds from affiliate notes payable			0	0	43,396,000
Repayments of note payable			(5,621,000)	(1,210,000)	0
Catalyst lease settlements			(9,108,000)	10,830,000	15,589,000
Repayments of Related Party Debt			0	0	53,524,000
Due to/from affiliates			$ 0	0
Debt fixed interest rate			2.15%
Payments of Financing Costs			$ (12,692,000)	(13,425,000)	0
Net cash (used in) provided by financing activities			(149,820,000)	70,004,000	633,836,000
Net (decrease) increase in cash and cash equivalents			35,531,000	(100,545,000)	(288,044,000)
Cash and equivalents, beginning of period			526,160,000	626,705,000	914,749,000
Cash and equivalents, end of period		$ 626,705,000	561,691,000	526,160,000	626,705,000
Issuer [Member]
Cash flows from operating activities:
Net income			102,944,000	457,200,000	235,887,000
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			16,852,000	19,971,000	14,873,000
Stock-based compensation			173,000	0	0
Change in fair value of catalyst leases			0	0	0
Deferred income taxes			0	0	0
Non-cash change in inventory repurchase obligations			(31,790,000)	13,779,000	29,453,000
Non-cash lower of cost or market inventory adjustment			351,278,000	(295,532,000)	(521,348,000)
Debt extinguishment costs				25,451,000
Distribution received from subsidiaries				0
Pension and other post-retirement benefit costs			7,771,000	6,607,000	7,139,000
Equity income in investee			0	0	0
Distributions from equity method investee			0	0
(Gain) loss on sale of assets			0	0	2,392,000
Equity in earnings (loss) of subsidiaries			1,302,931,000	1,349,208,000	1,502,243,000
Changes in operating assets and liabilities:
Accounts receivable			213,200,000	(304,151,000)	(168,338,000)
Due to/from affiliates			(1,608,556,000)	(1,696,091,000)	(2,031,933,000)
Inventories			(54,285,000)	(6,725,000)	217,629,000
Prepaid and other current assets			(129,000)	6,922,000	(3,200,000)
Accounts payable			(135,623,000)	53,569,000	163,272,000
Accrued expenses			(43,147,000)	288,434,000	531,613,000
Deferred revenue			9,594,000	(4,896,000)	6,858,000
Other assets and liabilities			32,685,000	(11,740,000)	(5,833,000)
Net cash provided by operations			163,898,000	(97,994,000)	(19,293,000)
Cash flows from investing activities:
Expenditures for property, plant and equipment			(6,172,000)	(1,884,000)	(21,563,000)
Expenditures for deferred turnaround costs			0	0	0
Expenditures for other assets			0	0	0
Return on investment in subsidiaries				0	12,800,000
Capital contributions to subsidiaries				(856,000)	(8,287,000)
Proceeds from sale of assets			0		4,802,000
Equity method investment - return of capital			0
Increase (Decrease) Due from Other Related Parties			(31,000)
Net cash used in investing activities			(6,203,000)	(2,740,000)	(984,180,000)
Cash flows from financing activities:
Proceeds from members' capital contributions					0
Contributions from PBF LLC			287,000,000	97,000,000	450,300,000
Parent Distribution					0
Distribution to members			(42,533,000)	(61,149,000)	(139,434,000)
Payment received for affiliate note receivable				0
Proceeds from revolver borrowings				490,000,000	550,000,000
Repayments of borrowings			(350,000,000)	(490,000,000)	(200,000,000)
Proceeds from affiliate notes payable					43,396,000
Repayments of note payable			0	0
Catalyst lease settlements			0	0	0
Repayments of Related Party Debt					53,524,000
Due to/from affiliates			0	0
Payments of Financing Costs			(12,692,000)	(13,425,000)
Net cash (used in) provided by financing activities			(118,225,000)	57,217,000	650,738,000
Net (decrease) increase in cash and cash equivalents			39,470,000	(43,517,000)	(352,735,000)
Cash and equivalents, beginning of period			486,568,000	530,085,000
Cash and equivalents, end of period		530,085,000	526,038,000	486,568,000	530,085,000
Guarantors Subsidiaries [Member]
Cash flows from operating activities:
Net income			(1,302,931,000)	(1,349,208,000)	(1,502,244,000)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			322,051,000	246,984,000	194,723,000
Stock-based compensation			20,039,000	21,503,000	18,296,000
Change in fair value of catalyst leases			(5,587,000)	2,247,000	(1,422,000)
Deferred income taxes			0	0	0
Non-cash change in inventory repurchase obligations			0	0	0
Non-cash lower of cost or market inventory adjustment			0	0	0
Debt extinguishment costs				0
Distribution received from subsidiaries				7,200,000
Pension and other post-retirement benefit costs			39,610,000	35,635,000	30,848,000
Equity income in investee			0	0	0
Distributions from equity method investee			0	0
(Gain) loss on sale of assets			(43,094,000)	1,458,000	150,000
Equity in earnings (loss) of subsidiaries			(28,696,000)	(1,273,000)	74,507,000
Changes in operating assets and liabilities:
Accounts receivable			350,000	394,000	3,058,000
Due to/from affiliates			1,483,875,000	1,709,868,000	2,046,280,000
Inventories			0	0	0
Prepaid and other current assets			(2,905,000)	(14,373,000)	(2,675,000)
Accounts payable			30,974,000	(28,168,000)	41,025,000
Accrued expenses			20,563,000	(38,022,000)	(353,591,000)
Deferred revenue			50,000	34,000	1,438,000
Other assets and liabilities			(10,217,000)	(19,098,000)	(16,238,000)
Net cash provided by operations			524,082,000	575,181,000	534,155,000
Cash flows from investing activities:
Expenditures for property, plant and equipment			(268,914,000)	(230,261,000)	(255,434,000)
Expenditures for deferred turnaround costs			(266,028,000)	(379,114,000)	(198,664,000)
Expenditures for other assets			(17,055,000)	(31,143,000)	(42,506,000)
Return on investment in subsidiaries				0	0
Capital contributions to subsidiaries				0	0
Proceeds from sale of assets			48,290,000		0
Equity method investment - return of capital			0
Increase (Decrease) Due from Other Related Parties			0
Net cash used in investing activities			(503,707,000)	(640,518,000)	(499,263,000)
Cash flows from financing activities:
Proceeds from members' capital contributions					0
Contributions from PBF LLC			0	0	0
Parent Distribution					0
Distribution to members			(10,054,000)	0	0
Payment received for affiliate note receivable				11,600,000
Proceeds from revolver borrowings				0	0
Repayments of borrowings			0	0	0
Proceeds from affiliate notes payable					0
Repayments of note payable			(5,621,000)	(1,210,000)
Catalyst lease settlements			(9,108,000)	10,830,000	15,589,000
Repayments of Related Party Debt					0
Due to/from affiliates			31,000	856,000
Payments of Financing Costs			0	0
Net cash (used in) provided by financing activities			(24,752,000)	22,076,000	15,589,000
Net (decrease) increase in cash and cash equivalents			(4,377,000)	(43,261,000)	50,481,000
Cash and equivalents, beginning of period			13,456,000	56,717,000
Cash and equivalents, end of period		56,717,000	9,079,000	13,456,000	56,717,000
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net income			28,696,000	1,273,000	(74,507,000)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			7,784,000	7,696,000	9,337,000
Stock-based compensation			0	0	0
Change in fair value of catalyst leases			0	0	0
Deferred income taxes			7,233,000	(12,526,000)	19,802,000
Non-cash change in inventory repurchase obligations			0	0	0
Non-cash lower of cost or market inventory adjustment			0	0	0
Debt extinguishment costs				0
Distribution received from subsidiaries				0
Pension and other post-retirement benefit costs			0	0	0
Equity income in investee			(17,819,000)	(14,565,000)	(5,679,000)
Distributions from equity method investee			17,819,000	20,244,000
(Gain) loss on sale of assets			0	0	8,832,000
Equity in earnings (loss) of subsidiaries			0	0	0
Changes in operating assets and liabilities:
Accounts receivable			26,883,000	(31,491,000)	4,158,000
Due to/from affiliates			121,169,000	(10,544,000)	(4,626,000)
Inventories			52,748,000	(47,980,000)	18,973,000
Prepaid and other current assets			117,000	(1,740,000)	92,000
Accounts payable			(6,066,000)	7,663,000	7,405,000
Accrued expenses			(210,411,000)	102,703,000	49,964,000
Deferred revenue			(13,000)	17,000	1,000
Other assets and liabilities			(21,149,000)	(21,136,000)	1,193,000
Net cash provided by operations			6,991,000	(386,000)	34,945,000
Cash flows from investing activities:
Expenditures for property, plant and equipment			(2,172,000)	(511,000)	(5,433,000)
Expenditures for deferred turnaround costs			0	0	0
Expenditures for other assets			0	0	0
Return on investment in subsidiaries				1,300,000	0
Capital contributions to subsidiaries				0	0
Proceeds from sale of assets			0		19,890,000
Equity method investment - return of capital			2,431,000
Increase (Decrease) Due from Other Related Parties			0
Net cash used in investing activities			259,000	789,000	14,457,000
Cash flows from financing activities:
Proceeds from members' capital contributions					8,287,000
Contributions from PBF LLC			0	0	0
Parent Distribution					(12,800,000)
Distribution to members			0	0	0
Payment received for affiliate note receivable				0
Proceeds from revolver borrowings				0	0
Repayments of borrowings			0	0	0
Proceeds from affiliate notes payable					0
Repayments of note payable			0	0
Catalyst lease settlements			0	0	0
Repayments of Related Party Debt					0
Due to/from affiliates			0	0
Payments of Financing Costs			0	0
Net cash (used in) provided by financing activities			(6,812,000)	(15,633,000)	(37,004,000)
Net (decrease) increase in cash and cash equivalents			438,000	(15,230,000)	12,398,000
Cash and equivalents, beginning of period			26,136,000	41,366,000
Cash and equivalents, end of period		41,366,000	26,574,000	26,136,000	41,366,000
Combining and Consolidated Adjustments [Member]
Cash flows from operating activities:
Net income			1,274,235,000	1,347,935,000	1,576,750,000
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			0	0	0
Stock-based compensation			0	0	0
Change in fair value of catalyst leases			0	0	0
Deferred income taxes			0	0	0
Non-cash change in inventory repurchase obligations			0	0	0
Non-cash lower of cost or market inventory adjustment			0	0	0
Debt extinguishment costs				0
Distribution received from subsidiaries				(7,200,000)
Pension and other post-retirement benefit costs			0	0	0
Equity income in investee			0	0	0
Distributions from equity method investee			0	0
(Gain) loss on sale of assets			0	0	0
Equity in earnings (loss) of subsidiaries			(1,274,235,000)	(1,347,935,000)	(1,576,750,000)
Changes in operating assets and liabilities:
Accounts receivable			0	0	0
Due to/from affiliates			0	0	0
Inventories			0	0	0
Prepaid and other current assets			0	0	0
Accounts payable				1,463,000	1,812,000
Accrued expenses			0	0	0
Deferred revenue			0	0	0
Other assets and liabilities			0	0	0
Net cash provided by operations			0	(5,737,000)	1,812,000
Cash flows from investing activities:
Expenditures for property, plant and equipment			0	0	0
Expenditures for deferred turnaround costs			0	0	0
Expenditures for other assets			0	0	0
Return on investment in subsidiaries				0	(12,800,000)
Capital contributions to subsidiaries				856,000	8,287,000
Proceeds from sale of assets			0		0
Equity method investment - return of capital			0
Increase (Decrease) Due from Other Related Parties			31,000
Net cash used in investing activities			31,000	856,000	(4,513,000)
Cash flows from financing activities:
Proceeds from members' capital contributions					(8,287,000)
Contributions from PBF LLC			0	0	0
Parent Distribution					12,800,000
Distribution to members			0	0	0
Payment received for affiliate note receivable				0
Proceeds from revolver borrowings				0	0
Repayments of borrowings			0	0	0
Proceeds from affiliate notes payable					0
Repayments of note payable			0	0
Catalyst lease settlements			0	0	0
Repayments of Related Party Debt					0
Due to/from affiliates			(31,000)	(856,000)
Payments of Financing Costs			0	0
Net cash (used in) provided by financing activities			(31,000)	6,344,000	4,513,000
Net (decrease) increase in cash and cash equivalents			0	1,463,000	1,812,000
Cash and equivalents, beginning of period			0	(1,463,000)
Cash and equivalents, end of period		(1,463,000)	0	0	(1,463,000)
2020 Senior Secured Notes [Member]
Cash flows from financing activities:
Repayments of Long-term Debt			0	(690,209,000)	0
Debt fixed interest rate							8.25%
2020 Senior Secured Notes [Member] | Issuer [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				(690,209,000)
2020 Senior Secured Notes [Member] | Guarantors Subsidiaries [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				0
2020 Senior Secured Notes [Member] | Non-Guarantor Subsidiaries [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				0
2020 Senior Secured Notes [Member] | Combining and Consolidated Adjustments [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				0
2025 Senior Notes [Member]
Cash flows from financing activities:
Proceeds from Issuance of Long-term Debt			0	725,000,000	0
Debt fixed interest rate						7.25%
2025 Senior Notes [Member] | Issuer [Member]
Cash flows from financing activities:
Proceeds from Issuance of Long-term Debt				725,000,000
2025 Senior Notes [Member] | Guarantors Subsidiaries [Member]
Cash flows from financing activities:
Proceeds from Issuance of Long-term Debt				0
2025 Senior Notes [Member] | Non-Guarantor Subsidiaries [Member]
Cash flows from financing activities:
Proceeds from Issuance of Long-term Debt				0
2025 Senior Notes [Member] | Combining and Consolidated Adjustments [Member]
Cash flows from financing activities:
Proceeds from Issuance of Long-term Debt				0
Rail Facility [Member]
Cash flows from financing activities:
Proceeds from revolver borrowings					35,000,000
Repayments of borrowings			0	0	(67,491,000)
Rail Facility [Member] | Issuer [Member]
Cash flows from financing activities:
Proceeds from revolver borrowings					0
Repayments of borrowings					0
Rail Facility [Member] | Guarantors Subsidiaries [Member]
Cash flows from financing activities:
Proceeds from revolver borrowings					0
Repayments of borrowings					0
Rail Facility [Member] | Non-Guarantor Subsidiaries [Member]
Cash flows from financing activities:
Proceeds from revolver borrowings					35,000,000
Repayments of borrowings					(67,491,000)
Rail Facility [Member] | Combining and Consolidated Adjustments [Member]
Cash flows from financing activities:
Proceeds from revolver borrowings					0
Repayments of borrowings					0
Rail Term Loan [Member]
Cash flows from financing activities:
Proceeds from Issuance of Long-term Debt			0	0	35,000,000
Repayments of Long-term Debt			(6,812,000)	(6,633,000)	0
Rail Term Loan [Member] | Issuer [Member]
Cash flows from financing activities:
Repayments of Long-term Debt			0	0
Rail Term Loan [Member] | Guarantors Subsidiaries [Member]
Cash flows from financing activities:
Repayments of Long-term Debt			0	0
Rail Term Loan [Member] | Non-Guarantor Subsidiaries [Member]
Cash flows from financing activities:
Repayments of Long-term Debt			(6,812,000)	(6,633,000)
Rail Term Loan [Member] | Combining and Consolidated Adjustments [Member]
Cash flows from financing activities:
Repayments of Long-term Debt			0	0
Collins Pipeline Company And T&M Terminal Company [Member]
Cash flows from financing activities:
Distribution to members				(1,800,000)
Collins Pipeline Company And T&M Terminal Company [Member] | Issuer [Member]
Cash flows from financing activities:
Distribution to members				0
Collins Pipeline Company And T&M Terminal Company [Member] | Guarantors Subsidiaries [Member]
Cash flows from financing activities:
Distribution to members				0
Collins Pipeline Company And T&M Terminal Company [Member] | Non-Guarantor Subsidiaries [Member]
Cash flows from financing activities:
Distribution to members				(9,000,000)
Collins Pipeline Company And T&M Terminal Company [Member] | Combining and Consolidated Adjustments [Member]
Cash flows from financing activities:
Distribution to members				7,200,000
Torrance Refinery [Member]
Cash flows from operating activities:
Net income		$ 86,394,000
Cash flows from investing activities:
Payments to acquire businesses	$ (521,350,000)		0	0	(971,932,000)
Torrance Refinery [Member] | Issuer [Member]
Cash flows from investing activities:
Payments to acquire businesses					(971,932,000)
Torrance Refinery [Member] | Guarantors Subsidiaries [Member]
Cash flows from investing activities:
Payments to acquire businesses					0
Torrance Refinery [Member] | Non-Guarantor Subsidiaries [Member]
Cash flows from investing activities:
Payments to acquire businesses					0
Torrance Refinery [Member] | Combining and Consolidated Adjustments [Member]
Cash flows from investing activities:
Payments to acquire businesses					0
Chalmette Refinery [Member]
Cash flows from investing activities:
Payments to acquire businesses			$ 0	$ 0	(2,659,000)
Chalmette Refinery [Member] | Issuer [Member]
Cash flows from investing activities:
Payments to acquire businesses					0
Chalmette Refinery [Member] | Guarantors Subsidiaries [Member]
Cash flows from investing activities:
Payments to acquire businesses					(2,659,000)
Chalmette Refinery [Member] | Non-Guarantor Subsidiaries [Member]
Cash flows from investing activities:
Payments to acquire businesses					0
Chalmette Refinery [Member] | Combining and Consolidated Adjustments [Member]
Cash flows from investing activities:
Payments to acquire businesses					$ 0