CONDENSED CONSOLIDATING FINANCIAL STATEMENTS OF PBF HOLDINGS (Statement of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Condensed Financial Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			$ 48,290	$ 0
Cash flows from operating activities:
Net income	$ 224,698	$ 526,080	624,640	255,164
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			255,614	197,365
Stock-based compensation			14,059	13,549
Change in fair value of catalyst leases			(5,783)	1,011
Deferred income taxes	(724)	(4,482)	(5,377)	641
Non-cash lower of cost or market inventory adjustment			(300,456)	(97,943)
Non-cash change in inventory repurchase obligations			10,701	(26,659)
Debt extinguishment costs	0	0	0	25,451
Pension and other post-retirement benefit costs			35,536	31,682
Income from equity method investee			(13,110)	(11,218)
Distributions from equity method investee			13,110	16,897
Loss on sale of assets			(43,072)	940
Equity in earnings of subsidiaries	0	0	0	0
Changes in operating assets and liabilities:
Accounts receivable			(113,672)	(159,026)
Due to/from affiliates			(16,670)	(2,318)
Inventories			(46,853)	(349,189)
Prepaid and other current assets			(8,664)	(4,107)
Accounts payable			(106,155)	(103,069)
Accrued expenses			302,594	401,674
Deferred revenue			4,476	(9,044)
Other assets and liabilities			(6,462)	(57,387)
Net cash provided by operating activities			594,456	124,414
Cash flows from investing activities:
Expenditures for property, plant and equipment			(165,675)	(211,224)
Expenditures for deferred turnaround costs			(201,029)	(341,598)
Expenditures for other assets			(16,946)	(31,096)
Equity method investment - return of capital			3,140	451
Due to/from affiliates			0
Net cash used in investing activities			(332,220)	(583,467)
Cash flows from financing activities:
Contributions from PBF LLC			(287,000)	(97,000)
Distribution to members			(36,090)	(39,315)
Proceeds from 2025 Senior Notes				725,000
Repayments of Long-term Debt			(5,092)	(690,209)
Proceeds from revolver borrowings			0	490,000
Repayments of revolver borrowings			0	(490,000)
Due to/from affiliates			0	0
Proceeds from insurance premium financing			6,959	0
Repayment of note payable			(5,621)	0
Catalyst lease settlements			(9,466)	0
Deferred financing costs and other			(12,692)	(13,424)
Net cash provided by (used in) financing activities			224,998	74,093
Net increase (decrease) in cash and cash equivalents			487,234	(384,960)
Cash and equivalents, beginning of period		241,745	526,160	626,705
Cash and equivalents, end of period	1,013,394	241,745	1,013,394	241,745
Rail Facility [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				(4,959)
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			0
Cash flows from operating activities:
Net income	224,698	526,080	624,640	255,164
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			12,548	15,746
Stock-based compensation			0	0
Change in fair value of catalyst leases			0	0
Deferred income taxes			0	0
Non-cash lower of cost or market inventory adjustment			(300,456)	(97,943)
Non-cash change in inventory repurchase obligations			10,701	(26,659)
Debt extinguishment costs				25,451
Pension and other post-retirement benefit costs			5,626	4,956
Income from equity method investee			0	0
Distributions from equity method investee			0	0
Loss on sale of assets			0	0
Equity in earnings of subsidiaries	261,695	319,568	943,652	1,022,866
Changes in operating assets and liabilities:
Accounts receivable			(120,764)	(119,813)
Due to/from affiliates			(1,103,057)	(1,494,632)
Inventories			(83,703)	(286,677)
Prepaid and other current assets			(4,831)	4,200
Accounts payable			(69,542)	(50,102)
Accrued expenses			300,546	365,132
Deferred revenue			4,417	(7,687)
Other assets and liabilities			32,188	(14,472)
Net cash provided by operating activities			251,965	(404,470)
Cash flows from investing activities:
Expenditures for property, plant and equipment			(4,726)	(847)
Expenditures for deferred turnaround costs			0	0
Expenditures for other assets			0	0
Equity method investment - return of capital			0	0
Due to/from affiliates			(1,143)
Net cash used in investing activities			(5,869)	(4,531)
Cash flows from financing activities:
Contributions from PBF LLC			(287,000)	(97,000)
Distribution to members			(36,090)	(39,315)
Proceeds from 2025 Senior Notes				725,000
Repayments of Long-term Debt			0	(690,209)
Proceeds from revolver borrowings				490,000
Repayments of revolver borrowings				(490,000)
Due to/from affiliates			0	0
Proceeds from insurance premium financing			467
Repayment of note payable			0
Catalyst lease settlements			0
Deferred financing costs and other			(12,692)	(13,424)
Net cash provided by (used in) financing activities			238,685	79,052
Net increase (decrease) in cash and cash equivalents			484,781	(329,949)
Cash and equivalents, beginning of period		200,136	486,568	530,085
Cash and equivalents, end of period	971,349		971,349
Issuer [Member] | Rail Facility [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				0
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			48,290
Cash flows from operating activities:
Net income	(261,695)	(313,171)	(943,652)	(1,022,791)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			237,234	175,859
Stock-based compensation			14,059	13,549
Change in fair value of catalyst leases			(5,783)	1,011
Deferred income taxes			0	0
Non-cash lower of cost or market inventory adjustment			0	0
Non-cash change in inventory repurchase obligations			0	0
Debt extinguishment costs				0
Pension and other post-retirement benefit costs			29,910	26,726
Income from equity method investee			0	0
Distributions from equity method investee			0	0
Loss on sale of assets			(43,072)	940
Equity in earnings of subsidiaries	(40)	(2,467)	9,009	(5,802)
Changes in operating assets and liabilities:
Accounts receivable			(3,970)	(1,782)
Due to/from affiliates			1,112,098	1,451,846
Inventories			0	0
Prepaid and other current assets			(4,684)	(8,467)
Accounts payable			(34,184)	(58,691)
Accrued expenses			(5,962)	(13,352)
Deferred revenue			68	(1,364)
Other assets and liabilities			(21,757)	(26,189)
Net cash provided by operating activities			339,314	531,493
Cash flows from investing activities:
Expenditures for property, plant and equipment			(159,612)	(210,076)
Expenditures for deferred turnaround costs			(201,029)	(341,598)
Expenditures for other assets			(16,946)	(31,096)
Equity method investment - return of capital			0	0
Due to/from affiliates			0
Net cash used in investing activities			(329,297)	(582,770)
Cash flows from financing activities:
Contributions from PBF LLC			0	0
Distribution to members			0	0
Proceeds from 2025 Senior Notes				0
Repayments of Long-term Debt			0	0
Proceeds from revolver borrowings				0
Repayments of revolver borrowings				0
Due to/from affiliates			1,143	3,684
Proceeds from insurance premium financing			6,492
Repayment of note payable			(5,621)
Catalyst lease settlements			(9,466)
Deferred financing costs and other			0	0
Net cash provided by (used in) financing activities			(7,452)	3,684
Net increase (decrease) in cash and cash equivalents			2,565	(47,593)
Cash and equivalents, beginning of period		9,124	13,456	56,717
Cash and equivalents, end of period	16,021		16,021
Guarantor Subsidiaries [Member] | Rail Facility [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				0
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			0
Cash flows from operating activities:
Net income	40	(3,930)	(9,009)	5,727
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			5,832	5,760
Stock-based compensation			0	0
Change in fair value of catalyst leases			0	0
Deferred income taxes			(5,377)	641
Non-cash lower of cost or market inventory adjustment			0	0
Non-cash change in inventory repurchase obligations			0	0
Debt extinguishment costs				0
Pension and other post-retirement benefit costs			0	0
Income from equity method investee			(13,110)	(11,218)
Distributions from equity method investee			13,110	16,897
Loss on sale of assets			0	0
Equity in earnings of subsidiaries	0	0	0	0
Changes in operating assets and liabilities:
Accounts receivable			11,062	(37,431)
Due to/from affiliates			(25,711)	40,468
Inventories			36,850	(62,512)
Prepaid and other current assets			851	160
Accounts payable			(2,429)	4,261
Accrued expenses			8,010	49,894
Deferred revenue			(9)	7
Other assets and liabilities			(16,893)	(16,726)
Net cash provided by operating activities			3,177	(4,072)
Cash flows from investing activities:
Expenditures for property, plant and equipment			(1,337)	(301)
Expenditures for deferred turnaround costs			0	0
Expenditures for other assets			0	0
Equity method investment - return of capital			3,140	451
Due to/from affiliates			0
Net cash used in investing activities			1,803	150
Cash flows from financing activities:
Contributions from PBF LLC			0	0
Distribution to members			0	0
Proceeds from 2025 Senior Notes				0
Repayments of Long-term Debt			(5,092)	0
Proceeds from revolver borrowings				0
Repayments of revolver borrowings				0
Due to/from affiliates			0
Proceeds from insurance premium financing			0
Repayment of note payable			0
Catalyst lease settlements			0
Deferred financing costs and other			0	0
Net cash provided by (used in) financing activities			(5,092)	(4,959)
Net increase (decrease) in cash and cash equivalents			(112)	(8,881)
Cash and equivalents, beginning of period		32,485	26,136	41,366
Cash and equivalents, end of period	26,024		26,024
Non-Guarantor Subsidiaries [Member] | Rail Facility [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				(4,959)
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			0
Cash flows from operating activities:
Net income	261,655	317,101	952,661	1,017,064
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			0	0
Stock-based compensation			0	0
Change in fair value of catalyst leases			0	0
Deferred income taxes			0	0
Non-cash lower of cost or market inventory adjustment			0	0
Non-cash change in inventory repurchase obligations			0	0
Debt extinguishment costs				0
Pension and other post-retirement benefit costs			0	0
Income from equity method investee			0	0
Distributions from equity method investee			0	0
Loss on sale of assets			0	0
Equity in earnings of subsidiaries	(261,655)	(317,101)	(952,661)	(1,017,064)
Changes in operating assets and liabilities:
Accounts receivable			0	0
Due to/from affiliates			0	0
Inventories			0	0
Prepaid and other current assets			0	0
Accounts payable			0	1,463
Accrued expenses			0	0
Deferred revenue			0	0
Other assets and liabilities			0	0
Net cash provided by operating activities			0	1,463
Cash flows from investing activities:
Expenditures for property, plant and equipment			0	0
Expenditures for deferred turnaround costs			0	0
Expenditures for other assets			0	0
Equity method investment - return of capital			0	0
Due to/from affiliates			1,143
Net cash used in investing activities			1,143	3,684
Cash flows from financing activities:
Contributions from PBF LLC			0	0
Distribution to members			0	0
Proceeds from 2025 Senior Notes				0
Repayments of Long-term Debt			0	0
Proceeds from revolver borrowings				0
Repayments of revolver borrowings				0
Due to/from affiliates			(1,143)	(3,684)
Proceeds from insurance premium financing			0
Repayment of note payable			0
Catalyst lease settlements			0
Deferred financing costs and other			0	0
Net cash provided by (used in) financing activities			(1,143)	(3,684)
Net increase (decrease) in cash and cash equivalents			0	1,463
Cash and equivalents, beginning of period		$ 0	0	(1,463)
Cash and equivalents, end of period	$ 0		$ 0
Consolidation, Eliminations [Member] | Rail Facility [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				$ 0