CONDENSED CONSOLIDATING FINANCIAL STATEMENTS OF PBF HOLDINGS (Statement of Operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues	$ 6,422.1	$ 7,642.4	$ 18,182.7	$ 20,882.5
Cost and expenses:
Cost of products and other	5,774.5	6,876.6	16,076.1	18,578.4
Operating expenses (excluding depreciation and amortization expense as reflected below)	411.8	409.7	1,274.9	1,223.8
Depreciation and amortization expense	98.7	83.4	288.3	243.0
Cost of sales	6,285.0	7,369.7	17,639.3	20,045.2
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	59.8	64.8	157.6	174.9
Depreciation and amortization expense	2.1	2.6	7.8	7.9
Equity income in investee	0.0	(4.7)	(7.9)	(13.1)
Gain on sale of assets	(32.6)	(43.8)	(31.8)	(43.1)
Total cost and expenses	6,314.3	7,388.6	17,765.0	20,171.8
Income from operations	107.8	253.8	417.7	710.7
Other income (expense):
Equity in earnings of subsidiaries	0.0	0.0	0.0	0.0
Change in fair value of catalyst leases	(3.8)	1.7	(6.4)	5.8
Interest expense, net	(26.4)	(31.9)	(83.4)	(98.2)
Other non-service component of net periodic benefit costs	(0.1)	0.3	(0.2)	0.8
Income before income taxes	77.5	223.9	327.7	619.1
Income tax benefit	(2.0)	(0.8)	(7.4)	(5.5)
Net income	79.5	224.7	335.1	624.6
Less: net income attributable to noncontrolling interests	0.0	0.0	0.1	0.0
Net income attributable to PBF Holding Company LLC	79.5	224.7	335.0	624.6
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	79.9	224.9	336.1	625.1
Guarantor Subsidiaries [Member]
Revenues	249.5	460.8	1,450.6	1,514.6
Cost and expenses:
Cost of products and other	105.7	279.4	1,000.6	1,040.8
Operating expenses (excluding depreciation and amortization expense as reflected below)	404.0	401.0	1,251.7	1,200.7
Depreciation and amortization expense	96.7	81.5	282.5	237.3
Cost of sales	606.4	761.9	2,534.8	2,478.8
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	8.4	6.0	26.9	19.1
Depreciation and amortization expense	0.0	0.0	0.0	0.0
Equity income in investee		0.0	0.0	0.0
Gain on sale of assets	(32.6)	(43.8)	(31.8)	(43.1)
Total cost and expenses	582.2	724.1	2,529.9	2,454.8
Income from operations	(332.7)	(263.3)	(1,079.3)	(940.2)
Other income (expense):
Equity in earnings of subsidiaries	(2.1)	0.0	(12.5)	(9.0)
Change in fair value of catalyst leases	(3.8)	1.7	(6.4)	5.8
Interest expense, net	(0.9)	(0.4)	(1.5)	(1.3)
Other non-service component of net periodic benefit costs	0.1	0.4	0.4	1.1
Income before income taxes	(339.4)	(261.6)	(1,099.3)	(943.6)
Income tax benefit	0.0	0.0	0.0	0.0
Net income	(339.4)	(261.6)	(1,099.3)	(943.6)
Less: net income attributable to noncontrolling interests	0.0		0.1
Net income attributable to PBF Holding Company LLC	(339.4)	(261.6)	(1,099.4)	(943.6)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(339.4)	(261.6)	(1,099.4)	(943.6)
Non-Guarantor Subsidiaries [Member]
Revenues	775.6	852.4	2,354.0	2,441.6
Cost and expenses:
Cost of products and other	768.8	847.7	2,352.8	2,438.1
Operating expenses (excluding depreciation and amortization expense as reflected below)	7.8	8.5	23.2	22.9
Depreciation and amortization expense	2.0	1.9	5.8	5.7
Cost of sales	778.6	858.1	2,381.8	2,466.7
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	1.0	(0.5)	(0.6)	1.7
Depreciation and amortization expense	0.0	0.0	0.0	0.0
Equity income in investee		(4.7)	(7.9)	(13.1)
Gain on sale of assets	0.0	0.0	0.0	0.0
Total cost and expenses	779.6	852.9	2,373.3	2,455.3
Income from operations	(4.0)	(0.5)	(19.3)	(13.7)
Other income (expense):
Equity in earnings of subsidiaries	0.0	0.0	0.0	0.0
Change in fair value of catalyst leases	0.0	0.0	0.0	0.0
Interest expense, net	(0.1)	(0.3)	(0.6)	(0.8)
Other non-service component of net periodic benefit costs	0.0	0.0	0.0	0.0
Income before income taxes	(4.1)	(0.8)	(19.9)	(14.5)
Income tax benefit	(2.0)	(0.8)	(7.4)	(5.5)
Net income	(2.1)	0.0	(12.5)	(9.0)
Less: net income attributable to noncontrolling interests	0.0		0.0
Net income attributable to PBF Holding Company LLC	(2.1)	0.0	(12.5)	(9.0)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(2.1)	0.0	(12.5)	(9.0)
Issuer [Member]
Revenues	6,363.3	7,565.9	18,073.2	20,679.8
Cost and expenses:
Cost of products and other	5,866.3	6,986.2	16,417.8	18,853.0
Operating expenses (excluding depreciation and amortization expense as reflected below)	0.0	0.2	0.0	0.2
Depreciation and amortization expense	0.0	0.0	0.0	0.0
Cost of sales	5,866.3	6,986.4	16,417.8	18,853.2
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	50.4	59.3	131.3	154.1
Depreciation and amortization expense	2.1	2.6	7.8	7.9
Equity income in investee		0.0	0.0	0.0
Gain on sale of assets	0.0	0.0	0.0	0.0
Total cost and expenses	5,918.8	7,048.3	16,556.9	19,015.2
Income from operations	444.5	517.6	1,516.3	1,664.6
Other income (expense):
Equity in earnings of subsidiaries	(339.4)	(261.6)	(1,099.3)	(943.6)
Change in fair value of catalyst leases	0.0	0.0	0.0	0.0
Interest expense, net	(25.4)	(31.2)	(81.3)	(96.1)
Other non-service component of net periodic benefit costs	(0.2)	(0.1)	(0.6)	(0.3)
Income before income taxes	79.5	224.7	335.1	624.6
Income tax benefit	0.0	0.0	0.0	0.0
Net income	79.5	224.7	335.1	624.6
Less: net income attributable to noncontrolling interests	0.0		0.1
Net income attributable to PBF Holding Company LLC	79.5	224.7	335.0	624.6
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	79.9	224.9	336.1	625.1
Consolidation, Eliminations [Member]
Revenues	(966.3)	(1,236.7)	(3,695.1)	(3,753.5)
Cost and expenses:
Cost of products and other	(966.3)	(1,236.7)	(3,695.1)	(3,753.5)
Operating expenses (excluding depreciation and amortization expense as reflected below)	0.0	0.0	0.0	0.0
Depreciation and amortization expense	0.0	0.0	0.0	0.0
Cost of sales	(966.3)	(1,236.7)	(3,695.1)	(3,753.5)
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	0.0	0.0	0.0	0.0
Depreciation and amortization expense	0.0	0.0	0.0	0.0
Equity income in investee		0.0	0.0	0.0
Gain on sale of assets	0.0	0.0	0.0	0.0
Total cost and expenses	(966.3)	(1,236.7)	(3,695.1)	(3,753.5)
Income from operations	0.0	0.0	0.0	0.0
Other income (expense):
Equity in earnings of subsidiaries	341.5	261.6	1,111.8	952.6
Change in fair value of catalyst leases	0.0	0.0	0.0	0.0
Interest expense, net	0.0	0.0	0.0	0.0
Other non-service component of net periodic benefit costs	0.0	0.0	0.0	0.0
Income before income taxes	341.5	261.6	1,111.8	952.6
Income tax benefit	0.0	0.0	0.0	0.0
Net income	341.5	261.6	1,111.8	952.6
Less: net income attributable to noncontrolling interests	0.0		(0.1)
Net income attributable to PBF Holding Company LLC	341.5	261.6	1,111.9	952.6
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 341.5	$ 261.6	$ 1,111.9	$ 952.6