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, 2018	$ 3,529.8	$ 2,652.5	$ (23.9)	$ 890.3	$ 10.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Members distributions	(59.4)	0.0	0.0	(59.4)	0.0
Capital contributions from PBF LLC	202.5	202.5	0.0	0.0	0.0
Distribution of TVPC investment	(168.8)	(168.8)	0.0	0.0	0.0
Distribution of assets to PBF LLC	(0.3)	(0.3)	0.0	0.0	0.0
Stock-based compensation	13.9	13.9	0.0	0.0	0.0
Net income (loss)	255.6	0.0	0.0	255.5	0.1
Other comprehensive income	0.7	0.0	0.7	0.0	0.0
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]
Members distributions	(36.4)	0.0	0.0	(36.4)	0.0
Capital contributions from PBF LLC	202.5	202.5	0.0	0.0	0.0
Distribution of 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 (loss)	(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
Beginning balance at Dec. 31, 2019	3,897.2	2,739.1	(9.7)	1,156.9	10.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Members distributions	(21.1)	0.0	0.0	(21.1)	0.0
Capital contributions from PBF LLC	24.4	24.4	0.0	0.0	0.0
Stock-based compensation	13.5	13.5	0.0	0.0	0.0
Net income (loss)	(956.1)	0.0	0.0	(956.1)	0.0
Other comprehensive income	1.1	0.0	1.1	0.0	0.0
Ending balance at Jun. 30, 2020	2,959.0	2,777.0	(8.6)	179.7	10.9
Beginning balance at Mar. 31, 2020	2,409.1	2,745.9	(8.9)	(338.8)	10.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital contributions from PBF LLC	24.4	24.4	0.0	0.0	0.0
Stock-based compensation	6.7	6.7	0.0	0.0	0.0
Net income (loss)	518.5	0.0	0.0	518.5	0.0
Other comprehensive income	0.3	0.0	0.3	0.0	0.0
Ending balance at Jun. 30, 2020	$ 2,959.0	$ 2,777.0	$ (8.6)	$ 179.7	$ 10.9