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v3.8.0.1

Long-Term Debt - Capital Lease Obligations (Details) | 9 Months Ended
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Sep. 30, 2017 lease
Debt Instrument [Line Items] |
Number of leases | 2
Capital Lease related to Excel Pipeline LLC |
Debt Instrument [Line Items] |
Remaining term of leases | 145 months
Capital Lease related to Magellan Pipeline Terminals, L.P. |
Debt Instrument [Line Items] |
Remaining term of leases | 144 months

X
- Definition Represents the remaining term of the lease. + References No definition available. + Details
Name: | cvi_LeaseAgreementsRemainingTermOfLease
Namespace Prefix: | cvi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of leases acquired. + References No definition available. + Details
Name: | cvi_NumberOfLeasesAcquired
Namespace Prefix: | cvi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cvi_CapitalLeaseObligationsExcelPipelineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cvi_CapitalLeaseObligationsMagellanPipelineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |