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Long-Term Debt - Capital Lease Obligations (Details)	6 Months Ended
	Jun. 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	148 months
Capital Lease related to Magellan Pipeline Terminals, L.P.
Debt Instrument [Line Items]
Remaining term of leases	147 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: