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Commitments and Contingencies - Environmental, Health and Safety ("EHS") Matters (Details) - EHS - CVR Refining - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Loss Contingencies [Line Items] |  |  |  |  |
Cost of renewable identification numbers expense | $ 50 | $ 106 | $ 27 | $ 99 |
Biofuel blending obligation recorded in other current liabilities | 16 |  | 16 |  | $ 28
RINs Asset | $ 14 |  | $ 14 |  |

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- Definition Carrying value as of the balance sheet date of obligations pertains to Biofuels blending. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References No definition available. + Details
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Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the expense incurred for the purchase of Renewable Identification Numbers. + References No definition available. + Details
Name: | cvi_ExpenseIncurredToPurchaseRenewableIdentificationNumbers
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Renewal Identification Numbers, Asset, Current + References No definition available. + Details
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Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition 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. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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- Details
Name: | dei_LegalEntityAxis=cvi_CVRRefiningLimitedPartnershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |