Finance Receivable Sale Agreements - Transfer Agreements and Note Purchase and Security Agreements (Details) - Carvana, LLC - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2016	Mar. 31, 2017	Jan. 31, 2016
Transfer Agreements and Note Purchase and Security Agreements
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Proceeds from advances		$ 63,000,000
Transfer Agreements and Note Purchase and Security Agreements | Consumer Loan
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Transfer of financial assets, accounted for as sales, maximum amount eligible to be sold				$ 230,000,000
Transfer of financial assets accounted for as sales, amount derecognized	$ 109,500,000
Gain on loan sales	1,500,000
Receivable purchase agreement, remaining unused capacity			$ 0
Purchase and Sale Agreement | Consumer Loan
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Transfer of financial assets, accounted for as sales, maximum amount eligible to be sold		$ 375,000,000
Transfer of financial assets accounted for as sales, amount derecognized			67,900,000
Receivable purchase agreement, remaining unused capacity			$ 285,800,000
Finance Receivable Purchase Agreement | Consumer Loan
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Payments to repurchase financing receivables	$ 72,400,000