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Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2019
Oct. 22, 2019
Cover page.    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2019  
Document Transition Report false  
Entity File Number 001-33492  
Entity Registrant Name CVR ENERGY, INC  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 61-1512186  
Entity Address, Address Line One 2277 Plaza Drive, Suite 500  
Entity Address, City or Town Sugar Land  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77479  
City Area Code 281  
Local Phone Number 207-3200  
Title of 12(b) Security Common Stock, $0.01 par value per share  
Trading Symbol CVI  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   100,530,599
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Entity Central Index Key 0001376139  
Amendment Flag false  
Current Fiscal Year End Date --12-31