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v3.20.2

Leases - Additional Information (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Jul. 31, 2020
Minimum |  |
Lessee, Lease, Description [Line Items] |  |
Renewal term | 1 year |
Minimum | Subsequent Event |  |
Lessee, Lease, Description [Line Items] |  |
Financing lease not yet commenced, amount expected to be capitalized at commencement |  | $ 20
Maximum |  |
Lessee, Lease, Description [Line Items] |  |
Renewal term | 20 years |
Maximum | Subsequent Event |  |
Lessee, Lease, Description [Line Items] |  |
Financing lease not yet commenced, amount expected to be capitalized at commencement |  | $ 25

X
- Definition Lessee, Finance Lease, Lease Not Yet Commenced, Liability + References No definition available. + Details
Name: | cvi_LesseeFinanceLeaseLeaseNotYetCommencedLiability
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Lease, Renewal Term + References No definition available. + Details
Name: | cvi_LesseeLeaseRenewalTerm
Namespace Prefix: | cvi_
Data Type: | xbrli:durationItemType
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_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |