| Document and Entity Information | Mar. 25, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001690820 |
| Document Type | 8-K |
| Document Period End Date | Mar. 25, 2021 |
| Entity Registrant Name | CARVANA CO. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-38073 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Security 12b Title | Class A Common Stock, Par Value $0.001 Per Share |
| Trading Symbol | CVNA |
| Security Exchange Name | NYSE |
