Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Feb. 21, 2020	Jun. 30, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-38073
Entity Registrant Name	CARVANA CO.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	81-4549921
Entity Address, Address Line One	1930 W. Rio Salado Parkway
Entity Address, City or Town	Tempe
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85281
City Area Code	480
Local Phone Number	719-8809
Title of 12(b) Security	Class A Common Stock, Par Value $0.001 Per Share
Trading Symbol	CVNA
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
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
Entity Shell Company	false
Entity Public Float			$ 3.1
Documents Incorporated by Reference	Portions of the registrant's definitive Proxy Statement for its 2020 Annual Meeting of Shareholders are incorporated by reference into Part III of this Form 10-K.
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Central Index Key	0001690820
Current Fiscal Year End Date	--12-31
Class A
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		50,551,092
Class B
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		101,212,613