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Related Party Transactions - Expenses Incurred and Payments Made to Related Parties (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Related Party Transaction [Line Items]
Cost of materials and other	$ 1,101	$ 1,180
Enable | Joint Venture Transportation Agreement
Related Party Transaction [Line Items]
Cost of materials and other	$ 2	$ 0

X

- Definition

The aggregate cost of goods produced and sold during the reporting period, excluding depreciation, depletion, and amortization.

+ References

No definition available.

+ Details

Name:	us-gaap_CostOfGoodsSoldExcludingDepreciationDepletionAndAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=cvi_RailcarLeaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: