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Face (par) amount of debt instrument at time of issuance.

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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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Debt - Reporting Segment Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Oct. 31, 2020
Debt Instrument [Line Items]
Amortization of deferred financing costs and debt discounts and premiums	$ 4	$ 6	$ 5
Term Loan \| Revolving credit facility
Debt Instrument [Line Items]
Debt face amount				$ 150
Line of credit				$ 30
Energy Segment
Debt Instrument [Line Items]
(Gain) loss on extinguishment of debt	(8)
Energy Segment \| 5.25% senior unsecured notes due 2025
Debt Instrument [Line Items]
Debt face amount	$ 600
Interest rate on debt instrument	5.25%
Energy Segment \| 5.75% senior unsecured notes due 2028
Debt Instrument [Line Items]
Debt face amount	$ 400
Interest rate on debt instrument	5.75%
Energy Segment \| CVR 2022 Notes
Debt Instrument [Line Items]
Debt face amount	$ 500
Energy Segment \| CVR Partners 2023 Notes
Debt Instrument [Line Items]
Debt face amount	$ 645
Interest rate on debt instrument	9.25%
Energy Segment \| Revolving credit facility
Debt Instrument [Line Items]
Borrowing availability on credit facilities	$ 385	443
Energy Segment \| CVR Refining credit facility
Debt Instrument [Line Items]
Letters of credit outstanding	35	7
Energy Segment \| CVR 2025 Notes [Member]
Debt Instrument [Line Items]
Debt face amount	$ 600
Interest rate on debt instrument	5.25%
Energy Segment \| CVR 2028 Notes [Member]
Debt Instrument [Line Items]
Debt face amount	$ 400
Interest rate on debt instrument	5.75%
Automotive Segment \| IEP Auto Credit Facility
Debt Instrument [Line Items]
Debt face amount	$ 350	382
Borrowing availability on credit facilities	96	107
Letters of credit outstanding	$ 45	$ 41
Weighted average interest rate on debt	2.01%	4.15%
Food Packaging Segment \| Viskase credit facility
Debt Instrument [Line Items]
Interest rate on debt instrument	3.72%	5.19%