Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Feb. 19, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
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 Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 590
Entity Common Stock, Shares Outstanding		100,530,599
Documents Incorporated by Reference	Portions of the registrant’s Proxy Statement to be filed pursuant to Regulation 14A pertaining to the 2021 Annual Meeting of Stockholders are incorporated by reference into Part III hereof. The Company intends to file such Proxy Statement no later than 120 days after the end of the fiscal year covered by this Form 10-K.
Entity Central Index Key	0001376139
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY