Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (56.9)	$ (1,474.6)
Other comprehensive income (loss):
Unrealized (loss) gain on available for sale securities	(0.6)	0.6
Net gain on pension and other post-retirement benefits	0.2	0.2
Total other comprehensive income (loss)	(0.4)	0.8
Comprehensive income (loss)	(57.3)	(1,473.8)
Less: comprehensive income attributable to noncontrolling interests	0.2	0.0
Comprehensive income (loss) attributable to PBF Holding Company LLC	$ (57.5)	$ (1,473.8)