Equity-Based Compensation - Valuation Assumptions, Options and Class B Units (Details) - $ / shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Carvana Group \| Class B Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility			63.00%
Expected dividend yield			0.00%
Expected term (in years)			6 years 3 months 18 days
Risk-free interest rate			1.90%
Weighted-average grant-date fair value per Class B Unit (in dollars per share)			$ 7.04
2017 Omnibus Incentive Plan \| Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	66.70%	65.50%	63.00%
Expected dividend yield	0.00%	0.00%	0.00%
Expected term (in years)	6 years 1 month 9 days	6 years	6 years 3 months 7 days
Risk-free interest rate	2.50%	3.00%	2.00%
Weighted-average grant-date fair value per option (in dollars per share)	$ 23.87	$ 26.93	$ 9.18

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 718
-SubTopic 10
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-Paragraph 2
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