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Cost Classifications (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Costs and Expenses [Abstract] |  |  |  |
Depreciation and amortization not included in direct operating expenses | $ 51.7 | $ 48.4 | $ 100.4 | $ 86.3
Depreciation and amortization not included in selling, general and administrative expenses | $ 2.3 | $ 2.3 | $ 4.7 | $ 4.4

X
- Definition Represents the amount of depreciation and amortization not included in direct operating expenses. + References No definition available. + Details
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X
- Definition Represents the amount of depreciation and amortization not included in selling, general and administrative expenses. + References No definition available. + Details
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Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CostsAndExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration