Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Revenues	$ 6,883.2	$ 2,499.1	$ 11,796.4	$ 7,759.1
Cost and expenses:
Cost of products and other	6,171.9	1,820.8	10,434.9	7,854.2
Operating expenses (excluding depreciation and amortization expense as reflected below)	462.3	423.7	922.5	931.2
Depreciation and amortization expense	102.3	111.1	207.0	216.5
Cost of sales	6,736.5	2,355.6	11,564.4	9,001.9
General and administrative expenses (excluding depreciation and amortization expense as reflected below)	47.9	53.3	90.8	131.5
Depreciation and amortization expense	3.3	2.8	6.7	5.7
Change in fair value of contingent consideration	(5.2)	(12.4)	24.3	(65.4)
Gain on sale of assets	0.0	(471.1)	(0.6)	(471.1)
Total cost and expenses	6,782.5	1,928.2	11,685.6	8,602.6
Income (loss) from operations	100.7	570.9	110.8	(843.5)
Other income (expense):
Interest expense, net	(69.9)	(52.8)	(139.5)	(89.3)
Change in fair value of catalyst obligations	5.8	(5.1)	(4.2)	6.6
Debt extinguishment costs	0.0	0.0	0.0	(22.2)
Other non-service components of net periodic benefit cost	1.9	1.1	3.9	2.1
Income (loss) before income taxes	38.5	514.1	(29.0)	(946.3)
Income tax (benefit) expense	(4.3)	(4.4)	(14.9)	9.8
Net income (loss)	42.8	518.5	(14.1)	(956.1)
Less: net income attributable to noncontrolling interests	2.2	0.0	2.4	0.0
Net income (loss) attributable to PBF Holding Company LLC	$ 40.6	$ 518.5	$ (16.5)	$ (956.1)