Non-controlling Interests - Changes in Ownership (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Transfers (to) from non-controlling interests:
Increase as a result of exchanges of LLC Units	$ 3,470	$ 12,592
Total transfers to non-controlling interests	(197,545)	(118,486)
Car360
Transfers (to) from non-controlling interests:
Increase as a result of Carvana Group's issuance of Class A Units in connection with business acquisitions	0	1,297
Class A Common Stock
Transfers (to) from non-controlling interests:
Decrease as a result of issuances of Class A common stock	$ (201,015)	$ (132,375)