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Debt - Holding Company Debt (Details) - USD ($) $ in Millions		1 Months Ended			2 Months Ended	12 Months Ended
	Dec. 16, 2024	Dec. 31, 2024	Apr. 30, 2024	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Nov. 30, 2024	Aug. 31, 2024	Jul. 13, 2024	May 31, 2024	Feb. 29, 2024	Sep. 30, 2023	Oct. 31, 2020
Debt Instrument
Debt		$ 6,809		$ 7,207	$ 7,207	$ 6,809	$ 7,207
Total cash paid						168
Loss on extinguishment of debt						8	13	$ 2
Repayments of Holding Company senior notes						(1,229)	(1,159)	(500)
Holding Company
Debt Instrument
Debt		4,699		4,847	4,847	4,699	4,847
Aggregate principal amount			$ 177
Total cash paid			168
Loss on extinguishment of debt						8	13	$ (2)
Extinguishment of debt, amount			$ 177		57
Repurchase amount				92	92		92
Energy
Debt Instrument
Debt		1,919		2,185	2,185	1,919	2,185
Loss on extinguishment of debt						(1)
Energy \| Revolving credit facility
Debt Instrument
Line of credit facility, incremental borrowing capacity														$ 125
Line of credit Facility maximum borrowing capacity														275
Revolving credit facilities		277		288	288	277	288
Energy \| Letter of Credit
Debt Instrument
Letters of credit outstanding amount														60
Energy \| Letter of Credit \| Maximum
Debt Instrument
Letters of credit outstanding amount														100
Energy \| Swingline Loan
Debt Instrument
Line of credit Facility maximum borrowing capacity														$ 30
Automotive Segment
Debt Instrument
Debt		31		33	33	31	33
Food Packaging Segment
Debt Instrument
Debt		144		133	133	144	133
Real Estate Segment
Debt Instrument
Debt		1		1	1	1	1
Home Fashion Segment
Debt Instrument
Debt		15		8	8	15	8
Reporting Segments
Debt Instrument
Debt		$ 2,110		$ 2,360	$ 2,360	$ 2,110	$ 2,360
5.25% senior unsecured notes due 2025 \| Energy
Debt Instrument
Interest rate on debt instrument (in percent)				5.25%	5.25%		5.25%						5.25%
Debt face amount													$ 600
6.375% senior unsecured notes due 2025 \| Holding Company
Debt Instrument
Debt				$ 749	$ 749		$ 749
Interest rate on debt instrument (in percent)		6.375%		6.375%	6.375%	6.375%	6.375%				6.375%
6.250% senior unsecured notes due 2026 \| Holding Company
Debt Instrument
Debt		$ 719		$ 1,238	$ 1,238	$ 719	$ 1,238
Interest rate on debt instrument (in percent)	6.25%	6.25%	6.25%	6.25%	6.25%	6.25%	6.25%		6.25%
Debt face amount			$ 12	$ 12	$ 12		$ 12
Aggregate principal amount			$ 52
Debt redemption		$ 21
Repayments of Holding Company senior notes	$ 500
5.250% senior unsecured notes due 2027 \| Holding Company
Debt Instrument
Debt		$ 1,384		$ 1,454	$ 1,454	$ 1,384	$ 1,454
Interest rate on debt instrument (in percent)		5.25%	5.25%	5.25%	5.25%	5.25%	5.25%		5.25%
Debt face amount			$ 5	$ 5	$ 5		$ 5
Aggregate principal amount			$ 73
4.375% senior unsecured notes due 2029 \| Holding Company
Debt Instrument
Debt		$ 656		$ 708	$ 708	$ 656	$ 708
Interest rate on debt instrument (in percent)		4.375%	4.375%	4.375%	4.375%	4.375%	4.375%		4.375%
Aggregate principal amount			$ 52
9.750% senior unsecured notes due 2029 \| Holding Company
Debt Instrument
Debt		$ 698		$ 698	$ 698	$ 698	$ 698
Interest rate on debt instrument (in percent)		9.75%		9.75%	9.75%	9.75%	9.75%			9.75%
Debt face amount				$ 700	$ 700		$ 700			$ 700
Unregistered 9.750% senior notes due 2029 \| Holding Company
Debt Instrument
Interest rate on debt instrument (in percent)										9.75%
Debt face amount										$ 700
10.000% senior notes due 2029 \| Holding Company
Debt Instrument
Debt		$ 495				$ 495
Interest rate on debt instrument (in percent)		10.00%		10.00%	10.00%	10.00%	10.00%		10.00%
Debt face amount									$ 500
9.000% senior unsecured notes due 2030 \| Holding Company
Debt Instrument
Debt		$ 747				$ 747
Interest rate on debt instrument (in percent)		9.00%		9.00%	9.00%	9.00%	9.00%		9.00%	9.00%		9.00%
Debt face amount										$ 750		$ 750
A8.50 Senior Unsecured Notes Due 2029 \| Energy
Debt Instrument
Interest rate on debt instrument (in percent)		8.50%		8.50%	8.50%	8.50%	8.50%
Debt face amount		$ 600		$ 600	$ 600	$ 600	$ 600
CVR 2028 Notes \| Energy
Debt Instrument
Interest rate on debt instrument (in percent)		5.75%				5.75%
Debt face amount		$ 400				$ 400
Cvr Partner 2028 Notes [Member] \| Energy
Debt Instrument
Interest rate on debt instrument (in percent)		6.125%				6.125%
Debt face amount		$ 550				$ 550
Unregistered 9.000% senior notes due 2030 \| Holding Company
Debt Instrument
Interest rate on debt instrument (in percent)										9.00%
Debt face amount										$ 750
Senior secured term loan \| Energy
Debt Instrument
Debt face amount		325				325
Variable net proceeds						$ 318
Senior secured term loan \| Energy \| SOFR
Debt Instrument
Variable interest rate						4.00%
Senior secured term loan \| Energy \| Base rate
Debt Instrument
Variable interest rate						3.00%
4.750% senior unsecured notes due 2024 \| Holding Company
Debt Instrument
Interest rate on debt instrument (in percent)				4.75%	4.75%		4.75%
Debt face amount				$ 35	$ 35		$ 35
Proceeds from Issuance of Debt				$ 376
4.375% senior unsecured notes due 2029 \| Holding Company
Debt Instrument
Interest rate on debt instrument (in percent)				4.375%	4.375%		4.375%
Debt face amount				$ 40	$ 40		$ 40
Repurchase amount		$ 84				$ 84
Viskase credit facility \| Food Packaging Segment
Debt Instrument
Interest rate on debt instrument (in percent)		7.49%		7.40%	7.40%	7.49%	7.40%
Term loan \| Revolving credit facility
Debt Instrument
Debt face amount															$ 134
Line of credit															$ 10
Term loan \| Food Packaging Segment
Debt Instrument
Revolving credit facilities		$ 25		$ 30	$ 30	$ 25	$ 30
CVR Refining Credit Facility \| Energy
Debt Instrument
Letters of credit outstanding amount		$ 24		$ 26	$ 26	$ 24	$ 26