Business Segments - Schedule of Operating Results and Capital Expenditures Information by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Segment Reporting Information [Line Items]
Net sales	$ 1,980	$ 1,646
Cost of materials and other	1,825	1,517
Direct operating expenses (exclusive of depreciation and amortization)	181	154
Selling, general and administrative expenses (exclusive of depreciation and amortization)	39	37
Depreciation and amortization	79	68
Loss on asset disposals	1	1
Operating (loss) income	(145)	(131)
Reconciliation of Operating (loss) income to Net loss:
Interest expense, net	(58)	(25)
Other income, net	14	2
Income tax benefit	29	49
Net loss	(160)	(105)
Other segment disclosures:
Interest income	5	10
Interest expense	(63)	(35)
Capital expenditures	44	55
Assets	3,861		$ 3,706
Petroleum Segment
Segment Reporting Information [Line Items]
Net sales	1,800	1,475
Nitrogen Fertilizer Segment
Segment Reporting Information [Line Items]
Net sales	180	143
Operating Segments \| Petroleum Segment
Segment Reporting Information [Line Items]
Net sales	1,803	1,477
Cost of materials and other	1,801	1,482
Direct operating expenses (exclusive of depreciation and amortization)	118	93
Selling, general and administrative expenses (exclusive of depreciation and amortization)	25	21
Depreciation and amortization	52	41
Loss on asset disposals	0	1
Operating (loss) income	(193)	(161)
Other segment disclosures:
Interest income	2	7
Interest expense	(4)	(7)
Capital expenditures	29	49
Assets	3,111		2,987
Operating Segments \| Nitrogen Fertilizer Segment
Segment Reporting Information [Line Items]
Net sales	180	143
Cost of materials and other	29	28
Direct operating expenses (exclusive of depreciation and amortization)	63	54
Selling, general and administrative expenses (exclusive of depreciation and amortization)	9	8
Depreciation and amortization	20	18
Loss on asset disposals	1	0
Operating (loss) income	58	35
Other segment disclosures:
Interest income	1	1
Interest expense	(9)	(9)
Capital expenditures	14	6
Assets	1,018		969
Corporate And Eliminations
Segment Reporting Information [Line Items]
Net sales	(3)	26
Other segment disclosures:
Assets	(268)		$ (250)
Other / Eliminations
Segment Reporting Information [Line Items]
Net sales	0	28
Cost of materials and other	(5)	7
Direct operating expenses (exclusive of depreciation and amortization)	0	7
Selling, general and administrative expenses (exclusive of depreciation and amortization)	5	8
Depreciation and amortization	7	9
Loss on asset disposals	0	0
Operating (loss) income	(10)	(5)
Other segment disclosures:
Interest income	2	2
Interest expense	(50)	(19)
Capital expenditures	1	0
Inter-segment fees and sales
Segment Reporting Information [Line Items]
Net sales	(3)	(2)
Inter-segment fees and sales \| Petroleum Segment
Segment Reporting Information [Line Items]
Net sales	(3)	(2)
Inter-segment fees and sales \| Nitrogen Fertilizer Segment
Segment Reporting Information [Line Items]
Net sales	$ 0	$ 0

CVR ENERGY INC 10-Q