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Leases - ROU Assets (Details) - USD ($) $ in Millions | Jun. 30, 2019 | Jan. 01, 2019
--- | --- | ---
Lessee, Lease, Description [Line Items] |  |
Total ROU assets |  | $ 79
Pipeline and storage agreements |  |
Lessee, Lease, Description [Line Items] |  |
Total ROU assets |  | 29
Finance lease asset | $ 31 | 1
Railcar leases |  |
Lessee, Lease, Description [Line Items] |  |
Total ROU assets |  | 15
Railcar leases | CVR Partners |  |
Lessee, Lease, Description [Line Items] |  |
Total ROU assets |  | 14
Real Estate and other leases |  |
Lessee, Lease, Description [Line Items] |  |
Total ROU assets |  | 35
Finance lease asset | $ 26 | $ 25

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- Definition Lease, RIght-of-Use Asset + References No definition available. + Details
Name: | cvi_LeaseRIghtofUseAsset
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount of lessee's right to use underlying asset under finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- 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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
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