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Cost Classifications (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Cost Classifications |  |
Depreciation and amortization not included in cost of product sold | $ 0.7 | $ 0.6
Depreciation and amortization not included in direct operating expenses | 30.8 | 20.9
Depreciation and amortization not included in selling, general and administrative expenses | $ 0.6 | $ 0.5

X
- Definition Represents the amount of depreciation and amortization not included in cost of product sold. + References No definition available. + Details
Name: | cvi_DepreciationAndAmortizationNotIncludedInCostOfProductSold
Namespace Prefix: | cvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

X
- Details
Name: | us-gaap_CostsAndExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration