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	(36.1)	0.0	0.0	(36.1)	0.0
Capital contributions	287.0	287.0	0.0	0.0	0.0
Distribution of assets to PBF LLC	12.6	12.6	0.0	0.0	0.0
Stock-based compensation	14.1	14.1	0.0	0.0	0.0
Net income	624.6	0.0	0.0	624.6	0.0
Other comprehensive income	0.5	0.0	0.5	0.0	0.0
Other	0.0	0.0	0.0	0.0	0.0
Ending balance at Sep. 30, 2018	4,061.4	2,648.2	(26.5)	1,428.9	10.8
Beginning balance at Jun. 30, 2018	3,589.1	2,391.2	(26.7)	1,213.8	10.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Member distributions	(9.6)	0.0	0.0	(9.6)	0.0
Capital contributions	265.0	265.0	0.0	0.0	0.0
Distribution of assets to PBF LLC	12.6	12.6	0.0	0.0	0.0
Stock-based compensation	4.6	4.6	0.0	0.0	0.0
Net income	224.7	0.0	0.0	224.7	0.0
Other comprehensive income	0.2	0.0	0.2	0.0	0.0
Ending balance at Sep. 30, 2018	4,061.4	2,648.2	(26.5)	1,428.9	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	(95.7)	0.0	0.0	(95.7)	0.0
Capital contributions	228.5	228.5	0.0	0.0	0.0
Distribution of assets to PBF LLC	0.3	0.3	0.0	0.0	0.0
Distribution of TVPC investment	(168.8)	(168.8)	0.0	0.0	0.0
Stock-based compensation	20.3	20.3	0.0	0.0	0.0
Net income	335.1	0.0	0.0	335.0	0.1
Other comprehensive income	1.1	0.0	1.1	0.0	0.0
Ending balance at Sep. 30, 2019	3,850.0	2,732.2	(22.8)	1,129.6	11.0
Beginning balance at Jun. 30, 2019	3,774.0	2,699.8	(23.2)	1,086.4	11.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Member distributions	(36.3)	0.0	0.0	(36.3)	0.0
Capital contributions	26.0	26.0	0.0	0.0	0.0
Stock-based compensation	6.4	6.4	0.0	0.0	0.0
Net income	79.5	0.0	0.0	79.5	0.0
Other comprehensive income	0.4	0.0	0.4	0.0	0.0
Ending balance at Sep. 30, 2019	$ 3,850.0	$ 2,732.2	$ (22.8)	$ 1,129.6	$ 11.0

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