CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 192.1	$ 144.0	$ 276.8	$ 357.7
Other comprehensive income (loss):
Unrealized gain on available-for-sale securities, net of tax of $0, $0, $12.6 and $0	0.0	0.0	19.2	0.0
Net gain reclassified into income on sale of available-for-sale securities, net of tax of $0, $0, $(8.0) and $0 (Note 11)	0.0	0.0	(12.1)	0.0
Net gain reclassified into income on reclassification of available-for-sale securities to trading securities, net of tax of $0, $0, $(4.6) and $0 (Note 11)	0.0	0.0	(7.1)	0.0
Change in fair value of interest rate swap, net of tax of $0, $0, $0 and $(0.1)	0.0	(0.1)	(0.1)	(0.1)
Net loss reclassified into income on settlement of interest rate swap, net of tax of $0.1, $0.1, $0.1 and $0.1 (Note 12)	0.2	0.2	0.4	0.4
Total other comprehensive income	0.2	0.1	0.3	0.3
Comprehensive income	192.3	144.1	277.1	358.0
Less: Comprehensive income attributable to noncontrolling interest	90.4	60.4	120.3	147.5
Comprehensive income attributable to CVR Energy stockholders	$ 101.9	$ 83.7	$ 156.8	$ 210.5