CONDENSED CONSOLIDATING FINANCIAL STATEMENTS OF PBF HOLDINGS (Statement of Operations) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues	$ 5,208.7	$ 5,799.6
Cost and expenses:
Cost of products and other	4,276.2	5,189.6
Operating expenses (excluding depreciation and amortization expense as reflected below)	453.4	411.4
Depreciation and amortization expense	94.3	76.8
Cost of sales	4,823.9	5,677.8
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	51.2	58.3
Depreciation and amortization expense	2.8	2.7
Equity income in investee	(4.7)	(4.0)
Gain on sale of asset	0.0	0.1
Total cost and expenses	4,873.2	5,734.9
Income from operations	335.5	64.7
Other income (expense):
Equity in earnings of subsidiaries	0.0	0.0
Change in fair value of catalyst leases	(3.1)	0.0
Interest expense, net	(27.4)	(33.3)
Other non-service component of net periodic benefit costs	(0.1)	0.3
Income before income taxes	304.9	31.7
Income tax benefit	(7.2)	(0.7)
Net income	312.1	32.4
Less: net income attributable to noncontrolling interests	0.0	0.0
Net income attributable to PBF Holding Company LLC	312.1	32.4
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	312.3	32.7
Debt extinguishment costs		0.0
Guarantor Subsidiaries [Member]
Revenues	850.3	711.7
Cost and expenses:
Cost of products and other	730.6	604.3
Operating expenses (excluding depreciation and amortization expense as reflected below)	446.1	405.0
Depreciation and amortization expense	92.4	74.9
Cost of sales	1,269.1	1,084.2
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	8.6	6.0
Depreciation and amortization expense	0.0	0.0
Equity income in investee	0.0	0.0
Gain on sale of asset		0.1
Total cost and expenses	1,277.7	1,090.3
Income from operations	(427.4)	(378.6)
Other income (expense):
Equity in earnings of subsidiaries	(17.8)	0.9
Change in fair value of catalyst leases	(3.1)
Interest expense, net	(0.4)	(0.4)
Other non-service component of net periodic benefit costs	0.1	0.4
Income before income taxes	(448.6)	(377.7)
Income tax benefit	0.0	0.0
Net income	(448.6)	(377.7)
Less: net income attributable to noncontrolling interests	0.0	0.0
Net income attributable to PBF Holding Company LLC	(448.6)	(377.7)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(448.6)	(377.7)
Debt extinguishment costs		0.0
Non-Guarantor Subsidiaries [Member]
Revenues	604.7	685.6
Cost and expenses:
Cost of products and other	625.7	679.6
Operating expenses (excluding depreciation and amortization expense as reflected below)	7.3	6.4
Depreciation and amortization expense	1.9	1.9
Cost of sales	634.9	687.9
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	(0.7)	1.3
Depreciation and amortization expense	0.0	0.0
Equity income in investee	(4.7)	(4.0)
Gain on sale of asset		0.0
Total cost and expenses	629.5	685.2
Income from operations	(24.8)	0.4
Other income (expense):
Equity in earnings of subsidiaries	0.0	0.0
Change in fair value of catalyst leases	0.0
Interest expense, net	(0.2)	(0.2)
Other non-service component of net periodic benefit costs	0.0	0.0
Income before income taxes	(25.0)	0.2
Income tax benefit	(7.2)	(0.7)
Net income	(17.8)	0.9
Less: net income attributable to noncontrolling interests	0.0	0.0
Net income attributable to PBF Holding Company LLC	(17.8)	0.9
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(17.8)	0.9
Debt extinguishment costs		0.0
Issuer [Member]
Revenues	5,188.9	5,734.7
Cost and expenses:
Cost of products and other	4,355.1	5,238.1
Operating expenses (excluding depreciation and amortization expense as reflected below)	0.0	0.0
Depreciation and amortization expense	0.0	0.0
Cost of sales	4,355.1	5,238.1
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	43.3	51.0
Depreciation and amortization expense	2.8	2.7
Equity income in investee	0.0	0.0
Gain on sale of asset		0.0
Total cost and expenses	4,401.2	5,291.8
Income from operations	787.7	442.9
Other income (expense):
Equity in earnings of subsidiaries	(448.6)	(377.7)
Change in fair value of catalyst leases	0.0
Interest expense, net	(26.8)	(32.7)
Other non-service component of net periodic benefit costs	(0.2)	(0.1)
Income before income taxes	312.1	32.4
Income tax benefit	0.0	0.0
Net income	312.1	32.4
Less: net income attributable to noncontrolling interests	0.0	0.0
Net income attributable to PBF Holding Company LLC	312.1	32.4
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	312.3	32.7
Debt extinguishment costs		0.0
Consolidation, Eliminations [Member]
Revenues	(1,435.2)	(1,332.4)
Cost and expenses:
Cost of products and other	(1,435.2)	(1,332.4)
Operating expenses (excluding depreciation and amortization expense as reflected below)	0.0	0.0
Depreciation and amortization expense	0.0	0.0
Cost of sales	(1,435.2)	(1,332.4)
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	0.0	0.0
Depreciation and amortization expense	0.0	0.0
Equity income in investee	0.0	0.0
Gain on sale of asset		0.0
Total cost and expenses	(1,435.2)	(1,332.4)
Income from operations	0.0	0.0
Other income (expense):
Equity in earnings of subsidiaries	466.4	376.8
Change in fair value of catalyst leases	0.0
Interest expense, net	0.0	0.0
Other non-service component of net periodic benefit costs	0.0	0.0
Income before income taxes	466.4	376.8
Income tax benefit	0.0	0.0
Net income	466.4	376.8
Less: net income attributable to noncontrolling interests	0.0	0.0
Net income attributable to PBF Holding Company LLC	466.4	376.8
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 466.4	376.8
Debt extinguishment costs		$ 0.0