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Commitments and Contingencies (Details 8) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Loss Contingencies [Line Items]
Minimum ownership interest in company	80.00%cvi_MajorityShareholderOwnershipPercentageMinimum
Affiliate Pension Obligations
Loss Contingencies [Line Items]
Aggregate underfunded pension obligation if pension plans voluntarily terminated by affiliate	473.8cvi_UnderfundedPensionObligationIfPensionPlansVoluntarilyTerminatedByAffiliate / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_AffiliatePensionObligationsMember	$ 591.8cvi_UnderfundedPensionObligationIfPensionPlansVoluntarilyTerminatedByAffiliate / us-gaap_LossContingenciesByNatureOfContingencyAxis = cvi_AffiliatePensionObligationsMember
IEP
Loss Contingencies [Line Items]
Ownership percentage held by controlling stockholder	82.00%cvi_MajorityShareholderOwnershipPercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_MajorityShareholderMember

X

- Definition

Represents the percentage of ownership interest held by the majority shareholder

+ References

No definition available.

+ Details

Name:	cvi_MajorityShareholderOwnershipPercentage
Namespace Prefix:	cvi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage of ownership interest in CVR Energy by Mr. Icahn's affiliates.

+ References

No definition available.

+ Details

Name:	cvi_MajorityShareholderOwnershipPercentageMinimum
Namespace Prefix:	cvi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the underfunded pension obligation of affiliates for which the Company is joint and severally liable.

+ References

No definition available.

+ Details

Name:	cvi_UnderfundedPensionObligationIfPensionPlansVoluntarilyTerminatedByAffiliate
Namespace Prefix:	cvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=cvi_AffiliatePensionObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_MajorityShareholderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: