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Cost Classifications (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Costs and Expenses [Abstract] |  |  |  |
Depreciation and amortization not included in direct operating expenses | $ 51.3 | $ 48.1 | $ 151.7 | $ 134.5
Depreciation and amortization not included in selling, general and administrative expenses | $ 2.8 | $ 2.0 | $ 7.5 | $ 6.3

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