CONDENSED CONSOLIDATING FINANCIAL STATEMENTS OF PBF HOLDINGS (Statement of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 367,535	$ (205,376)	$ 399,942	$ (270,916)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			168,110	122,849
Stock-based compensation			9,520	10,134
Change in fair value of catalyst leases			(4,153)	1,484
Deferred income taxes	(3,957)	5,161	(4,653)	5,123
Non-cash lower of cost or market inventory adjustment			(245,655)	167,134
Non-cash change in inventory repurchase obligations			2,538	(3,107)
Debt extinguishment costs	0	25,451	0	25,451
Pension and other post-retirement benefit costs			23,691	21,121
Income from equity method investee			(8,385)	(7,419)
Distributions from equity method investee			8,385	12,254
Loss on sale of assets			673	912
Equity in earnings of subsidiaries	0	0	0	0
Changes in operating assets and liabilities:
Accounts receivable			(80,445)	6,121
Due to/from affiliates			(7,737)	(13,505)
Inventories			(80,825)	(178,738)
Prepaid and other current assets			(1,761)	(18,038)
Accounts payable			64,253	(144,819)
Accrued expenses			910	106,073
Deferred revenue			(3,838)	(7,408)
Other assets and liabilities			(10,025)	(40,525)
Net cash provided by (used in) operations			230,545	(205,819)
Cash flows from investing activities:
Expenditures for property, plant and equipment			(110,169)	(179,575)
Expenditures for deferred turnaround costs			(179,194)	(214,375)
Expenditures for other assets			(12,357)	(23,747)
Equity method investment - return of capital			2,865	0
Due to/from affiliates			0
Net cash used in investing activities			(298,855)	(417,697)
Cash flows from financing activities:
Contributions from PBF LLC			(22,000)	(97,000)
Distribution to members			(26,567)	(5,252)
Proceeds from 2025 Senior Notes				725,000
Repayments of Long-term Debt			(3,385)	(690,209)
Proceeds from revolver borrowings			0	290,000
Repayments of revolver borrowings			0	(290,000)
Catalyst lease settlements			(9,466)	0
Due to/from affiliates			0	0
Repayment of note payable			2,421	0
Proceeds from insurance premium financing			17,398
Deferred financing costs and other			(12,692)	(12,414)
Net cash provided by (used in) financing activities			(15,133)	110,830
Net decrease in cash and cash equivalents			(83,443)	(512,686)
Cash and equivalents, beginning of period		114,019	526,160	626,705
Cash and equivalents, end of period	442,717	114,019	442,717	114,019
Rail Facility [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				(3,295)
Issuer [Member]
Cash flows from operating activities:
Net income (loss)	367,535	(205,377)	399,942	(270,917)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			8,417	11,597
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			(245,655)	167,134
Non-cash change in inventory repurchase obligations			2,538	(3,107)
Debt extinguishment costs		25,451		25,451
Pension and other post-retirement benefit costs			3,482	3,304
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	(304,211)	(338,171)	(681,957)	(703,300)
Changes in operating assets and liabilities:
Accounts receivable			(89,080)	21,334
Due to/from affiliates			(866,193)	(1,111,279)
Inventories			(125,750)	(141,219)
Prepaid and other current assets			1,572	(3,314)
Accounts payable			94,244	(120,026)
Accrued expenses			61,061	178,794
Deferred revenue			(2,375)	(6,002)
Other assets and liabilities			8,585	(15,218)
Net cash provided by (used in) operations			(67,255)	(560,168)
Cash flows from investing activities:
Expenditures for property, plant and equipment			(2,575)	(287)
Expenditures for deferred turnaround costs			0	0
Expenditures for other assets			0	0
Equity method investment - return of capital			0
Due to/from affiliates			(13)
Net cash used in investing activities			(2,588)	(287)
Cash flows from financing activities:
Contributions from PBF LLC			(22,000)	(97,000)
Distribution to members			(26,567)	(5,252)
Proceeds from 2025 Senior Notes				725,000
Repayments of Long-term Debt			0	(690,209)
Proceeds from revolver borrowings				290,000
Repayments of revolver borrowings				(290,000)
Catalyst lease settlements			0
Due to/from affiliates			0	(5,453)
Repayment of note payable			0
Proceeds from insurance premium financing			1,168
Deferred financing costs and other			(12,692)	(12,414)
Net cash provided by (used in) financing activities			(16,091)	108,672
Net decrease in cash and cash equivalents			(85,934)	(451,783)
Cash and equivalents, beginning of period		78,302	486,568	530,085
Cash and equivalents, end of period	400,634		400,634
Issuer [Member] | Rail Facility [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				0
Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net income (loss)	(304,211)	(346,936)	(681,957)	(709,619)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			155,805	107,429
Stock-based compensation			9,520	10,134
Change in fair value of catalyst leases			(4,153)	1,484
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		0
Pension and other post-retirement benefit costs			20,209	17,817
Income from equity method investee			0	0
Distributions from equity method investee			0	0
Loss on sale of assets			673	912
Equity in earnings of subsidiaries	(9,888)	1,442	(9,049)	3,335
Changes in operating assets and liabilities:
Accounts receivable			(1,466)	3,501
Due to/from affiliates			849,520	1,029,667
Inventories			0	0
Prepaid and other current assets			(3,750)	(14,716)
Accounts payable			(24,915)	(24,140)
Accrued expenses			(23,450)	(42,903)
Deferred revenue			(1,452)	(1,418)
Other assets and liabilities			(7,018)	(13,881)
Net cash provided by (used in) operations			296,615	360,932
Cash flows from investing activities:
Expenditures for property, plant and equipment			(106,633)	(179,019)
Expenditures for deferred turnaround costs			(179,194)	(214,375)
Expenditures for other assets			(12,357)	(23,747)
Equity method investment - return of capital			0
Due to/from affiliates			0
Net cash used in investing activities			(298,184)	(417,141)
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
Catalyst lease settlements			(9,466)
Due to/from affiliates			13	5,453
Repayment of note payable			2,421
Proceeds from insurance premium financing			16,230
Deferred financing costs and other			0	0
Net cash provided by (used in) financing activities			4,356	5,453
Net decrease in cash and cash equivalents			2,787	(50,756)
Cash and equivalents, beginning of period		5,961	13,456	56,717
Cash and equivalents, end of period	16,243		16,243
Guarantor Subsidiaries [Member] | Rail Facility [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				0
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net income (loss)	(9,888)	10,208	(9,049)	9,655
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			3,888	3,823
Stock-based compensation			0	0
Change in fair value of catalyst leases			0	0
Deferred income taxes			(4,653)	5,123
Non-cash lower of cost or market inventory adjustment			0	0
Non-cash change in inventory repurchase obligations			0	0
Debt extinguishment costs		0		0
Pension and other post-retirement benefit costs			0	0
Income from equity method investee			(8,385)	(7,419)
Distributions from equity method investee			8,385	12,254
Loss on sale of assets			0	0
Equity in earnings of subsidiaries	0	0	0	0
Changes in operating assets and liabilities:
Accounts receivable			10,101	(18,714)
Due to/from affiliates			8,936	68,107
Inventories			44,925	(37,519)
Prepaid and other current assets			417	(8)
Accounts payable			(5,076)	(2,116)
Accrued expenses			(36,701)	(29,818)
Deferred revenue			(11)	12
Other assets and liabilities			(11,592)	(11,426)
Net cash provided by (used in) operations			1,185	(8,046)
Cash flows from investing activities:
Expenditures for property, plant and equipment			(961)	(269)
Expenditures for deferred turnaround costs			0	0
Expenditures for other assets			0	0
Equity method investment - return of capital			2,865
Due to/from affiliates			0
Net cash used in investing activities			1,904	(269)
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			(3,385)	0
Proceeds from revolver borrowings				0
Repayments of revolver borrowings				0
Catalyst lease settlements			0
Due to/from affiliates			0	0
Repayment of note payable			0
Proceeds from insurance premium financing			0
Deferred financing costs and other			0	0
Net cash provided by (used in) financing activities			(3,385)	(3,295)
Net decrease in cash and cash equivalents			(296)	(11,610)
Cash and equivalents, beginning of period		29,756	26,136	41,366
Cash and equivalents, end of period	25,840		25,840
Non-Guarantor Subsidiaries [Member] | Rail Facility [Member]
Cash flows from financing activities:
Repayments of Long-term Debt				(3,295)
Consolidation, Eliminations [Member]
Cash flows from operating activities:
Net income (loss)	314,099	336,729	691,006	699,965
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		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	314,099	336,729	691,006	699,965
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 (used in) operations			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
Due to/from affiliates			13
Net cash used in investing activities			13	0
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
Catalyst lease settlements			0
Due to/from affiliates			(13)	0
Repayment of note payable			0
Proceeds from insurance premium financing			0
Deferred financing costs and other			0	0
Net cash provided by (used in) financing activities			(13)	0
Net 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