Description of Business - Narrative (Details) - Subsequent Event $ / shares in Units, $ in Millions	May 03, 2017 USD ($) $ / shares shares
Common Class A \| IPO
Subsidiary, Sale of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares)	15,000,000.0
Sale of stock, price per share (USD per share) \| $ / shares	$ 15.00
Sale of stock, consideration received on transaction \| $	$ 210.7
Carvana Group \| Class A Common Units
Subsidiary, Sale of Stock [Line Items]
Investment owned, balance (in shares)	18,750,000
Ernest Garcia, II \| Class A Common Units
Subsidiary, Sale of Stock [Line Items]
Investment owned, balance (in shares)	170,000
Noncash acquisition, interest acquired	0.10%

Balance held at close of period in number of shares.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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