Condensed Consolidated Statements of Changes in Equity Statement - USD ($) $ in Millions	Total	Member's Equity [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2017	$ 3,183.9	$ 2,359.7	$ (27.0)	$ 840.4	$ 10.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Member distributions	(1.2)			(1.2)
Stock-based compensation	4.3	4.3
Net income	32.4			32.4
Other comprehensive income	0.3		0.3
Ending balance at Mar. 31, 2018	3,219.7	2,364.0	(26.7)	871.6	10.8
Beginning balance at Dec. 31, 2017	3,183.9	2,359.7	(27.0)	840.4	10.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	399.9
Other comprehensive income	0.3
Ending balance at Jun. 30, 2018	3,589.1	2,391.2	(26.7)	1,213.8	10.8
Beginning balance at Mar. 31, 2018	3,219.7	2,364.0	(26.7)	871.6	10.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Member distributions	(25.3)			(25.3)
Capital contributions	22.0	22.0	0.0		0.0
Stock-based compensation	5.2	5.2	0.0	0.0	0.0
Net income	367.5	0.0	0.0	367.5	0.0
Other comprehensive income	0.0
Ending balance at Jun. 30, 2018	3,589.1	2,391.2	(26.7)	1,213.8	10.8
Beginning balance at Dec. 31, 2018	3,529.8	2,652.5	(23.9)	890.3	10.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Member distributions	(23.0)	0.0	0.0	(23.0)
Distribution of assets to PBF LLC	0.3	0.3	0.0	0.0	0.0
Stock-based compensation	6.2	6.2	0.0	0.0	0.0
Net income	312.1	0.0	0.0	312.1	0.0
Other comprehensive income	0.2	0.0	0.2	0.0	0.0
Ending balance at Mar. 31, 2019	3,825.0	2,658.4	(23.7)	1,179.4	10.9
Beginning balance at Dec. 31, 2018	3,529.8	2,652.5	(23.9)	890.3	10.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	255.6
Other comprehensive income	0.7
Ending balance at Jun. 30, 2019	3,774.0	2,699.8	(23.2)	1,086.4	11.0
Beginning balance at Mar. 31, 2019	3,825.0	2,658.4	(23.7)	1,179.4	10.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Member distributions	(36.4)	0.0	0.0	(36.4)	0.0
Capital contributions	2.5	2.5	0.0	0.0	0.0
Distributions from PBF LLC related to the TVPC Acquisition	200.0	200.0	0.0	0.0	0.0
Decrease in TVPC investment	(168.8)	(168.8)	0.0	0.0	0.0
Stock-based compensation	7.7	7.7	0.0	0.0	0.0
Net income	(56.5)	0.0	0.0	(56.6)	0.1
Other comprehensive income	0.5	0.0	0.5	0.0	0.0
Ending balance at Jun. 30, 2019	$ 3,774.0	$ 2,699.8	$ (23.2)	$ 1,086.4	$ 11.0