Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 483,431	$ 225,518	$ 195,533
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	299,860	232,948	207,004
Stock-based compensation	26,848	22,656	13,497
Change in fair value of catalyst leases	2,247	(1,422)	(10,184)
Deferred income taxes	313,833	244,758	(5,607)
Change in tax receivable agreement liability	(250,922)	(12,908)	(18,150)
Non-cash change in inventory repurchase obligations	13,779	29,453	63,389
Change in Non-cash Lower of Cost or Market Adjustment	(295,532)	(521,348)	427,226
Pension and other post-retirement benefit costs	42,242	37,986	26,982
Loss (gain) on sale of assets	1,458	11,374	(1,004)
Changes in operating assets and liabilities:
Accounts receivable	(332,377)	(165,416)	97,636
Inventories	(54,705)	236,602	(271,892)
Prepaid and other current assets	73,526	(54,341)	(3,661)
Accounts payable	34,604	217,566	(24,291)
Accrued expenses	359,549	217,820	(36,805)
Deferred revenue	(4,359)	9,249	2,816
Payable to related parties pursuant to tax receivable agreement	0	(50,771)	(67,643)
Other assets and liabilities	(53,072)	(27,790)	(34,422)
Net cash provided by operations	685,861	651,934	560,424
Cash flows from investing activities:
Expenditures for property, plant and equipment	(306,681)	(298,737)	(353,964)
Expenditures for deferred turnaround costs	(379,114)	(198,664)	(53,576)
Expenditures for other assets	(31,143)	(42,506)	(8,236)
Proceeds from sale of assets	0	24,692	168,270
Purchase of marketable securities	(75,036)	(1,909,965)	(2,067,286)
Maturities of marketable securities	115,060	2,104,209	2,067,983
Net cash used in investing activities	(687,011)	(1,393,935)	(812,113)
Cash flows from financing activities:
Proceeds from issuance of PBFX common units, net of underwriters’ discount and commissions	0	138,378	0
Proceeds from stock options exercised	10,532	0	0
Distributions to PBF Energy Company LLC members other than PBF Energy	(4,584)	(21,947)	(19,386)
Distributions to PBFX public unit holders	(43,510)	(32,806)	(22,830)
Dividend payments	(131,686)	(117,486)	(106,584)
Proceeds from revolver borrowings	490,000	550,000	170,000
Repayments of note payable	10,830	15,586	0
Repayments of revolver borrowings	(490,000)	(200,000)	(170,000)
Repayments of Notes Payable	(1,210)	0	0
Proceeds from sale of Class A common stock, net of underwriters’ discount	0	275,300	344,000
Purchases of treasury stock	(1,038)	(743)	(8,073)
Deferred financing costs and other	(17,131)	0	(17,828)
Net cash (used in) provided by financing activities	(172,103)	543,955	798,136
Net (decrease) increase in cash and cash equivalents	(173,253)	(198,046)	546,447
Cash and equivalents, beginning of period	746,274	944,320	397,873
Cash and equivalents, end of period	573,021	746,274	944,320
Non-cash activities:
Conversion of Delaware Economic Development Authority loan to grant	0	4,000	4,000
Accrued construction in progress and unpaid fixed assets	26,805	35,595	7,974
Contingent Consideration Classified as Equity, Fair Value Disclosure	6,831	0	0
Cash paid during year for:
Interest (including capitalized interest of $7,156, $8,452 and $3,529 in 2017, 2016 and 2015, respectively)	166,538	137,599	96,859
Income taxes	0	3,841	124,040
Gain (Loss) on Extinguishment of Debt	25,451	0	0
2025 Senior Notes [Member]
Cash flows from financing activities:
Proceeds from PBFX Term Loan borrowings	725,000	0	0
2020 Senior Secured Notes [Member]
Cash flows from financing activities:
Repayments of PBFX Term Loan borrowings	(690,209)	0	0
PBFX Revolving Credit Facility [Member]
Cash flows from financing activities:
Proceeds from revolver borrowings	20,000	194,700	24,500
Repayments of revolver borrowings	(179,500)	(30,000)	(275,100)
PBFX Term Loan [Member]
Cash flows from financing activities:
Repayments of PBFX Term Loan borrowings	(39,664)	(194,536)	(700)
2023 Senior Secured Notes [Member]
Cash flows from financing activities:
Proceeds from Issuance of Senior Long-term Debt	0	0	500,000
Rail Facility [Member]
Cash flows from financing activities:
Proceeds from revolver borrowings	0	0	102,075
Repayments of revolver borrowings	0	(67,491)	(71,938)
Rail Term Loan [Member]
Cash flows from financing activities:
Proceeds from PBFX Term Loan borrowings	0	35,000	0
Repayments of PBFX Term Loan borrowings	(6,633)	0	0
PBFX Senior Notes [Member]
Cash flows from financing activities:
Proceeds from Issuance of Senior Long-term Debt	178,500	0	350,000
Chalmette Refinery [Member]
Cash flows from investing activities:
Acquisition of Chalmette Refining, net of cash acquired	0	(2,659)	(565,304)
Toledo Terminal Acquisition [Member]
Cash flows from investing activities:
Acquisition of Chalmette Refining, net of cash acquired	(10,097)	0	0
Torrance Refinery [Member]
Cash flows from investing activities:
Acquisition of Chalmette Refining, net of cash acquired	0	(971,932)	0
East Coast Terminals [Member]
Cash flows from investing activities:
Acquisition of Chalmette Refining, net of cash acquired	0	(98,373)	0
Collins Pipeline Company And T&M Terminal Company [Member]
Cash flows from financing activities:
Distributions to PBF Energy Company LLC members other than PBF Energy	$ (1,800)	$ 0	$ 0