Non-controlling Interests - Changes in Ownership (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Transfers (to) from non-controlling interests:
Increase as a result of exchanges of LLC Units	$ 4,948	$ 15,828	$ 3,631
Increase as a result of adjustments to the non-controlling interests	0	0	340
Total transfers to non-controlling interests	(196,067)	(183,222)	(170,173)
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	0
Class A
Transfers (to) from non-controlling interests:
Decrease as a result of issuance of Class A common stock	(201,015)	(132,375)	(174,144)
Class A Convertible Preferred Stock
Transfers (to) from non-controlling interests:
Decrease as a result of conversion of Class A Convertible Preferred Stock	$ 0	$ (67,972)	$ 0