Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 01, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
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 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
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001690820
Current Fiscal Year End Date	--12-31
Class A Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		85,587,265
Class B Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		87,200,276