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Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 customer | Dec. 31, 2013 customer
Basis of Consolidation |  |
Percentage of holders of the outstanding common units required to vote for removal of the general partner | 66.67%cvi_MinimumPercentageOfVotingRequiredForRemovalOfGeneralPartner |
Cash and Cash Equivalents |  |
Checks issued but not presented to banks | 21.5 cvi_CashAndCashEquivalentsChecksIssuedButNotPresentedToBanks | 13.2 cvi_CashAndCashEquivalentsChecksIssuedButNotPresentedToBanks
Accounts receivable | Credit concentration | One customer with largest risk concentration |  |
Accounts Receivable, net |  |
Number of customers | 0 cvi_ConcentrationRiskNumberOfCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / cvi_ConcentrationRiskByLargestCustomersAxis = cvi_LargestSingleCustomerConcentrationRiskMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember | 1 cvi_ConcentrationRiskNumberOfCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / cvi_ConcentrationRiskByLargestCustomersAxis = cvi_LargestSingleCustomerConcentrationRiskMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember
Customers individually representing greater than this percentage for disclosure | 8.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / cvi_ConcentrationRiskByLargestCustomersAxis = cvi_LargestSingleCustomerConcentrationRiskMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember | 12.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / cvi_ConcentrationRiskByLargestCustomersAxis = cvi_LargestSingleCustomerConcentrationRiskMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember

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- Definition Represents the number of customers of the entity with concentration risks that exceed the disclosure threshold. + References No definition available. + Details
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- Definition Represents the minimum percentage of voting by the holders of outstanding common units required for removal of the general partner. + References No definition available. + Details
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