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v2.4.1.9

Change of Control (Details) (IEP, USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Apr. 18, 2012 contingent_cash_payment
IEP |  |
Change of Control |  |
Price per share |  | $ 30 cvi_OfferPricePerShareOnRestrictedStockAwardsVested / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_MajorityShareholderMember
Number of non-transferable contingent cash payments right for each Share (in shares) |  | 1 cvi_NumberofNonTransferableContingentCashPaymentsRightforEachShare / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_MajorityShareholderMember
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 number of non-transferable contingent cash payment rights for each share of parent company. + References No definition available. + Details
Name: | cvi_NumberofNonTransferableContingentCashPaymentsRightforEachShare
Namespace Prefix: | cvi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the offer price per share on restricted stock awards vested as a result of the Transaction Agreement and change in control at the parent company. + References No definition available. + Details
Name: | cvi_OfferPricePerShareOnRestrictedStockAwardsVested
Namespace Prefix: | cvi_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | cvi_ScheduleOfChangeInControlLineItems
Namespace Prefix: | cvi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration