Long-Term Debt and Finance Lease Obligations - Credit Agreement (Details) - Line of Credit - Revolving Credit Facility $ in Millions	Sep. 30, 2025 USD ($)
CVR Energy’s Amended and Restated ABL Credit Agreement (“CVR Energy ABL”) \| Petroleum Segment
Line of Credit Facility [Line Items]
Total Available Borrowing Capacity	$ 341
Amount Borrowed as of September 30, 2025	0
Outstanding Letters of Credit	25
Available Capacity as of September 30, 2025	316
CVR Partners’ Credit Agreement (“CVR Partners ABL”) \| Nitrogen Fertilizer Segment
Line of Credit Facility [Line Items]
Total Available Borrowing Capacity	50
Amount Borrowed as of September 30, 2025	0
Outstanding Letters of Credit	0
Available Capacity as of September 30, 2025	$ 50

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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