Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 42.8	$ 518.5	$ (14.1)	$ (956.1)
Other comprehensive income (loss):
Unrealized gain (loss) on available for sale securities	0.1	0.1	(0.5)	0.7
Net gain on pension and other post-retirement benefits	0.2	0.2	0.4	0.4
Total other comprehensive income (loss)	0.3	0.3	(0.1)	1.1
Comprehensive income (loss)	43.1	518.8	(14.2)	(955.0)
Less: comprehensive income attributable to noncontrolling interests	2.2	0.0	2.4	0.0
Comprehensive income (loss) attributable to PBF Holding Company LLC	$ 40.9	$ 518.8	$ (16.6)	$ (955.0)