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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 $ 10.9us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod $ 33.8us-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 2cvi_NumberofSponsorsofPensionPlans    
EHS      
Loss Contingencies [Line Items]      
Environmental accruals 0.9us-gaap_AccrualForEnvironmentalLossContingencies
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= cvi_EnvironmentalHealthAndSafetyMattersMember
  1.1us-gaap_AccrualForEnvironmentalLossContingencies
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= cvi_EnvironmentalHealthAndSafetyMattersMember
EHS | CRRM      
Loss Contingencies [Line Items]      
Cost of renewable identification numbers 36.6cvi_ExpenseIncurredToPurchaseRenewableIdentificationNumbers
/ dei_LegalEntityAxis
= cvi_CoffeyvilleResourcesRefiningAndMarketingLLCMember
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= cvi_EnvironmentalHealthAndSafetyMattersMember
34.7cvi_ExpenseIncurredToPurchaseRenewableIdentificationNumbers
/ dei_LegalEntityAxis
= cvi_CoffeyvilleResourcesRefiningAndMarketingLLCMember
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= cvi_EnvironmentalHealthAndSafetyMattersMember
 
Biofuel blending obligation recorded in other current liabilities 56.9cvi_BiofuelsBlendingObligationCurrent
/ dei_LegalEntityAxis
= cvi_CoffeyvilleResourcesRefiningAndMarketingLLCMember
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= cvi_EnvironmentalHealthAndSafetyMattersMember
  52.3cvi_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 $ 492.5cvi_UnderfundedPensionObligationIfPensionPlansVoluntarilyTerminatedByAffiliate
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= cvi_AffiliatePensionObligationsMember
  $ 473.8cvi_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