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Long-Term Debt (Details 8) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Debt Disclosure [Abstract] |  |  |
Amortization of deferred financing costs reported as interest expense and other financing costs | $ 2.8 cvi_AmortizationOfFinancingCostsAndDiscount | $ 2.9 cvi_AmortizationOfFinancingCostsAndDiscount | $ 5.0 cvi_AmortizationOfFinancingCostsAndDiscount
2015 | 2.8 cvi_DeferredFinancingCostsFutureAmortizationExpenseYearOne |  |
2016 | 2.2 cvi_DeferredFinancingCostsFutureAmortizationExpenseYearTwo |  |
2017 | 1.8 cvi_DeferredFinancingCostsFutureAmortizationExpenseYearThree |  |
2018 | 0.9 cvi_DeferredFinancingCostsFutureAmortizationExpenseYearFour |  |
2019 | 0.9 cvi_DeferredFinancingCostsFutureAmortizationExpenseYearFive |  |
Thereafter | 2.6 cvi_DeferredFinancingCostsFutureAmortizationExpenseAfterYearFive |  |
Total | $ 11.2 cvi_DeferredFinancingCostsFutureAmortizationExpense |  |

X
- Definition The component of interest expense comprised of the periodic charge against earnings over the life of the financing arrangement to which such costs relate and the amortization of the debt discount associated with related debt instruments. + References No definition available. + Details
Name: | cvi_AmortizationOfFinancingCostsAndDiscount
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate estimated amortization expense for succeeding fiscal years for deferred financing costs subject to amortization. + References No definition available. + Details
Name: | cvi_DeferredFinancingCostsFutureAmortizationExpense
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of amortization expense expected to be recognized for the remainder of the deferred financing costs after the fifth succeeding fiscal year. + References No definition available. + Details
Name: | cvi_DeferredFinancingCostsFutureAmortizationExpenseAfterYearFive
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of amortization expense of deferred financing costs expected to be recognized during year five of the five succeeding fiscal years. + References No definition available. + Details
Name: | cvi_DeferredFinancingCostsFutureAmortizationExpenseYearFive
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of amortization expense of deferred financing costs expected to be recognized during year four of the five succeeding fiscal years. + References No definition available. + Details
Name: | cvi_DeferredFinancingCostsFutureAmortizationExpenseYearFour
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of amortization expense of deferred financing costs expected to be recognized during year one of the five succeeding fiscal years. + References No definition available. + Details
Name: | cvi_DeferredFinancingCostsFutureAmortizationExpenseYearOne
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of amortization expense of deferred financing costs expected to be recognized during year three of the five succeeding fiscal years. + References No definition available. + Details
Name: | cvi_DeferredFinancingCostsFutureAmortizationExpenseYearThree
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of amortization expense of deferred financing costs expected to be recognized during year two of the five succeeding fiscal years. + References No definition available. + Details
Name: | cvi_DeferredFinancingCostsFutureAmortizationExpenseYearTwo
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration