Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 388,200	$ 103,000	$ 457,200
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	404,400	346,700	274,700
Stock-based compensation	30,500	20,200	21,500
Change in fair value of catalyst obligations	9,700	(5,600)	2,200
Deferred income taxes	(8,800)	7,200	(12,500)
Non-cash change in inventory repurchase obligations	25,400	(31,800)	13,800
Non-cash lower of cost or market inventory adjustment	(250,200)	351,300	(295,500)
Debt extinguishment costs	0	0	25,500
Pension and other post-retirement benefit costs	44,800	47,400	42,200
Income from equity method investee	(7,900)	(17,800)	(14,600)
Distributions from equity method investee	7,900	17,800	20,200
(Gain) loss on sale of assets	(29,900)	(43,100)	1,500
Changes in operating assets and liabilities:
Accounts receivable	(115,900)	240,400	(335,200)
Due to/from affiliates	12,600	(3,500)	3,200
Inventories	(8,000)	(1,500)	(54,700)
Prepaid and other current assets	4,400	(2,900)	(9,200)
Accounts payable	132,000	(110,700)	34,500
Accrued expenses	209,500	(233,000)	353,100
Deferred revenue	(200)	9,600	(4,800)
Other assets and liabilities	(58,900)	1,300	(52,000)
Net cash provided by operations	789,600	695,000	471,100
Cash flows from investing activities:
Expenditures for property, plant and equipment	(373,100)	(277,300)	(232,600)
Expenditures for deferred turnaround costs	(299,300)	(266,000)	(379,100)
Expenditures for other assets	(44,700)	(17,000)	(31,200)
Proceeds from sale of assets	36,300	48,300	0
Equity method investment - return of capital	600	2,400	1,300
Net cash used in investing activities	(680,200)	(509,600)	(641,600)
Cash flows from financing activities:
Contributions from PBF LLC	228,500	287,000	97,000
Distributions to members	(121,600)	(52,600)	(61,200)
Payment received for affiliate note receivable	0	0	11,600
Proceeds from 2025 Senior Notes	0	0	725,000
Proceeds from revolver borrowings	1,350,000	0	490,000
Repayments of revolver borrowings	(1,350,000)	(350,000)	(490,000)
Repayments of note payable	0	5,600	1,200
Settlements of catalyst obligations	(6,500)	(9,100)	10,800
Deferred financing costs and other	(1,400)	(12,800)	(13,400)
Net cash provided by (used in) financing activities	92,000	(149,900)	70,000
Net increase (decrease) in cash and cash equivalents	201,400	35,500	(100,500)
Cash and equivalents, beginning of period	561,700	526,200	626,700
Cash and equivalents, end of period	763,100	561,700	526,200
Non-cash activities:
Accrued and unpaid capital expenditures	36,000	89,500	25,400
Assets acquired under operating leases	1,168,000	0	0
Assets acquired under finance leases	26,300	0	0
Distribution of assets to PBF Energy Company LLC	169,100	13,700	25,500
Conversion of affiliate notes payable to capital contribution	0	0	86,300
Note payable issued for purchase of property, plant and equipment	0	0	6,800
Cash paid during the year for:
Interest (net of capitalized interest of $17.6, $9.3 and $5.9 in 2019, 2018 and 2017, respectively)	107,000	124,400	131,400
Income taxes	1,200	600	0
2020 Senior Secured Notes [Member]
Cash flows from financing activities:
Repayments of Long-term Debt	0	0	(690,200)
Rail Term Loan [Member]
Cash flows from financing activities:
Repayments of Long-term Debt	(7,000)	(6,800)	(6,600)
Collins Pipeline Company And T&M Terminal Company [Member]
Cash flows from financing activities:
Distributions to members	$ 0	$ 0	$ (1,800)