Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 399,942	$ (270,916)
Adjustments to reconcile net income (loss) to net cash used in operations:
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	(4,653)	5,123
Non-cash change in inventory repurchase obligations	2,538	(3,107)
Non-cash lower of cost or market inventory adjustment	(245,655)	167,134
Debt extinguishment costs	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
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
Net cash used in investing activities	(298,855)	(417,697)
Cash flows from financing activities:
Contributions from PBF LLC	22,000	97,000
Distributions 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
Repayment of note payable	(2,421)	0
Catalyst lease settlements	(9,466)	0
Proceeds from insurance premium financing	17,398	0
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	526,160	626,705
Cash and equivalents, end of period	442,717	114,019
Non-cash activities:
Accrued and unpaid capital expenditures	20,119	127,805
Distribution of assets to PBF Energy Company LLC	0	25,547
Conversion of affiliate notes payable to capital contribution	0	86,298
2025 Senior Notes [Member]
Cash flows from financing activities:
Proceeds from 2025 Senior Notes	0	725,000
2020 Senior Secured Notes [Member]
Cash flows from financing activities:
Repayments of Long-term Debt	0	(690,209)
Rail Term Loan [Member]
Cash flows from financing activities:
Repayments of Long-term Debt	$ (3,385)	$ (3,295)