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Commitments and Contingencies - Renewable Fuel Standards (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Petroleum Segment | EHS
Loss Contingencies [Line Items]
Expense (benefit) of renewable identification numbers expense	$ 13	$ (23)

X

- Definition

Represents the expense incurred for the purchase of Renewable Identification Numbers.

+ References

No definition available.

+ Details

Name:	cvi_ExpenseIncurredToPurchaseRenewableIdentificationNumbers
Namespace Prefix:	cvi_
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_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=cvi_PetroleumSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=cvi_EnvironmentalHealthAndSafetyMattersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: