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Cost Classifications (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Cost Classifications |  |
Depreciation and amortization not included in cost of product sold | $ 1.2 | $ 0.7
Depreciation and amortization not included in direct operating expenses | 32.5 | 30.8
Depreciation and amortization not included in selling, general and administrative expenses | $ 0.5 | $ 0.6

X
- Details
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Namespace Prefix: | cvi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of depreciation and amortization not included in cost of product sold. + References No definition available. + Details
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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
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Data Type: | xbrli:monetaryItemType
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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