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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2014
Initial Public Offering |  |
Issuance of common units, tax impact | $ 148.0 cvi_StockIssuedDuringPeriodValueNewIssuesTaxBenefitExpense / us-gaap_TransactionTypeAxis = us-gaap_IPOMember |
Underwritten Offering |  |
Issuance of common units, tax impact | 96.0 cvi_StockIssuedDuringPeriodValueNewIssuesTaxBenefitExpense / us-gaap_TransactionTypeAxis = cvi_UnderwrittenOfferingMember |
Private Placement |  |
Issuance of common units, tax impact | 15.2 cvi_StockIssuedDuringPeriodValueNewIssuesTaxBenefitExpense / us-gaap_TransactionTypeAxis = us-gaap_PrivatePlacementMember |
Secondary Offering |  |
Issuance of common units, tax impact | 88.5 cvi_StockIssuedDuringPeriodValueNewIssuesTaxBenefitExpense / us-gaap_TransactionTypeAxis = cvi_SecondaryOfferingMember |
Second Underwritten Offering |  |
Issuance of common units, tax impact |  | $ 39.4 cvi_StockIssuedDuringPeriodValueNewIssuesTaxBenefitExpense / us-gaap_TransactionTypeAxis = cvi_SecondUnderwrittenOfferingMember

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