ACQUISITIONS (Purchase Price) (Details) - USD ($) $ in Thousands			12 Months Ended
	Jul. 01, 2016	Apr. 29, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Nov. 01, 2015
Business Acquisition [Line Items]
Maturities of marketable securities			$ 115,060	$ 2,104,209	$ 2,067,983
Business Combination, Consideration Transferred, Working Capital Adjustments		$ 37
Proceeds from revolver borrowings			490,000	550,000	170,000
Torrance Refinery [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred, Initial Estimate	$ 537,500
Preliminary estimate of payable to Seller for working capital adjustments	450,582
Business Combination, Consideration Transferred, Other	(16,150)
Cash paid	521,350		$ 0	$ 971,932	$ 0
Total consideration	$ 971,932
Plains Asset Purchase, East Coast Terminals [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred, Initial Estimate		100,000
Business Combination, Consideration Transferred, Other		(1,627)
Cash paid		100,000
Total consideration		98,373
Maturities of marketable securities		98,336
Proceeds from revolver borrowings		98,500
Repayments of Secured Debt		$ 98,336
PBF Energy Inc. [Member] | Chalmette Refining L.L.C. [Member]
Business Acquisition [Line Items]
Ownership interest						100.00%