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Related Party Transactions (Details) (USD $)
3 Months Ended 0 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 09, 2015
Related Party Transaction [Line Items]      
Dividends declared per share (in dollars per share) $ 0.50us-gaap_CommonStockDividendsPerShareDeclared $ 0.75us-gaap_CommonStockDividendsPerShareDeclared  
IEP Energy LLC      
Related Party Transaction [Line Items]      
Ownership percentage held by controlling stockholder 82.00%cvi_MajorityShareholderOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_MajorityShareholderMember
   
Insight Portfolio Group (formerly Icahn Sourcing, LLC)      
Related Party Transaction [Line Items]      
Payment to related party $ 0cvi_RelatedPartyTransactionPayments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cvi_InsightPortfolioGroupLLCMember
$ 100,000cvi_RelatedPartyTransactionPayments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cvi_InsightPortfolioGroupLLCMember
 
Quarterly Dividend      
Related Party Transaction [Line Items]      
Dividends declared per share (in dollars per share)     $ 0.50us-gaap_CommonStockDividendsPerShareDeclared
/ us-gaap_DividendsAxis
= cvi_QuarterlyDividendMember
Dividends     43,400,000us-gaap_Dividends
/ us-gaap_DividendsAxis
= cvi_QuarterlyDividendMember
Quarterly Dividend | IEP Energy LLC      
Related Party Transaction [Line Items]      
Dividends     $ 35,600,000us-gaap_Dividends
/ us-gaap_DividendsAxis
= cvi_QuarterlyDividendMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_MajorityShareholderMember