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Commitments and Contingencies (Details 2) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Loss Contingencies [Line Items] |  |  |
Environmental costs recognized capitalized in the period | $ 10.9 us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod | $ 33.8 us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod |
Affiliate pension obligations |  |  |
Minimum ownership interest in CVR Energy by Mr. Icahn's affiliates (as a percent) | 80.00%cvi_MajorityShareholderOwnershipPercentageMinimum |  |
Number of sponsors of pension plans | 2 cvi_NumberofSponsorsofPensionPlans |  |
EHS |  |  |
Loss Contingencies [Line Items] |  |  |
Environmental accruals | 0.9 us-gaap_AccrualForEnvironmentalLossContingencies / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_EnvironmentalHealthAndSafetyMattersMember |  | 1.1 us-gaap_AccrualForEnvironmentalLossContingencies / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_EnvironmentalHealthAndSafetyMattersMember
EHS | CRRM |  |  |
Loss Contingencies [Line Items] |  |  |
Cost of renewable identification numbers | 36.6 cvi_ExpenseIncurredToPurchaseRenewableIdentificationNumbers / dei_LegalEntityAxis = cvi_CoffeyvilleResourcesRefiningAndMarketingLLCMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_EnvironmentalHealthAndSafetyMattersMember | 34.7 cvi_ExpenseIncurredToPurchaseRenewableIdentificationNumbers / dei_LegalEntityAxis = cvi_CoffeyvilleResourcesRefiningAndMarketingLLCMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_EnvironmentalHealthAndSafetyMattersMember |
Biofuel blending obligation recorded in other current liabilities | 56.9 cvi_BiofuelsBlendingObligationCurrent / dei_LegalEntityAxis = cvi_CoffeyvilleResourcesRefiningAndMarketingLLCMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_EnvironmentalHealthAndSafetyMattersMember |  | 52.3 cvi_BiofuelsBlendingObligationCurrent / dei_LegalEntityAxis = cvi_CoffeyvilleResourcesRefiningAndMarketingLLCMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_EnvironmentalHealthAndSafetyMattersMember
Affiliate Pension Obligations |  |  |
Affiliate pension obligations |  |  |
Underfunded pension obligation, if ACF and Federal-Mogul plans were voluntarily terminated | $ 492.5 cvi_UnderfundedPensionObligationIfPensionPlansVoluntarilyTerminatedByAffiliate / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_AffiliatePensionObligationsMember |  | $ 473.8 cvi_UnderfundedPensionObligationIfPensionPlansVoluntarilyTerminatedByAffiliate / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_AffiliatePensionObligationsMember
New Vitol Agreement | CRRM |  |  |
Loss Contingencies [Line Items] |  |  |
Renewal term of agreement | 1 year |  |
Number of days for prior notice of nonrenewal | 180 days |  |
Mr. Icahn's affiliates |  |  |
Affiliate pension obligations |  |  |
Ownership percentage held by controlling stockholder | 82.00%cvi_MajorityShareholderOwnershipPercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_MajorityShareholderMember |  |

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