ACQUISITIONS (Pro Forma Information) (Details) - USD ($) $ in Millions	2 Months Ended	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Business Acquisition [Line Items]
Revenues		$ 4,913.2	$ 5,260.0
Net Income (Loss) Attributable to Parent		$ (57.1)	(1,474.6)
Martinez Acquisition [Member]
Business Acquisition [Line Items]
Pro-forma revenues			5,623.8
Pro-forma net loss attributable to PBF Holding			$ (1,505.9)
Revenues	$ 467.7
Net Income (Loss) Attributable to Parent	$ 205.3