No definition available.

Name:	cvna_TransferOfFinancialAssetsAccountedForAsSalesAdditionalAmountEligibleToBeSold
Namespace Prefix:	cvna_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Transfer Of Financial Assets Accounted For As Sales, Number Of Agreement Types

+ References

No definition available.

+ Details

Name:	cvna_TransferOfFinancialAssetsAccountedForAsSalesNumberOfAgreementTypes
Namespace Prefix:	cvna_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	cvna_TransferOfFinancialAssetsAccountedForAsSalesRemainingAmountEligibleToBeSold
Namespace Prefix:	cvna_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reflects, by transferred financial asset type, the amount of sales proceeds in excess of or deficient from the sum of the carrying amounts of transferred financial assets plus transaction costs, including those transactions in which the seller/transferor has continuing involvement with the financial assets that have been transferred.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719

+ Details

Name:	us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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.

+ References

No definition available.

+ Details

Name:	us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction, at the date of derecognition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719

+ Details

Name:	us-gaap_TransferOfFinancialAssetsAccountedForAsSalesAmountDerecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cvna_SalesAgreementAxis=cvna_PurchaseAndSaleAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cvna_SalesAgreementAxis=cvna_MasterPurchaseSaleAgreement2017MasterTransferAgreementAndOtherPartnersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=cvna_SecuritizationTransactionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Finance Receivable Sale Agreements - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) agreementType	Sep. 30, 2020 USD ($)	Mar. 31, 2021 USD ($)
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Number of agreement types \| agreementType			2
Consumer Loan \| MPSA
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Commitment of purchaser, current availability financing, principal balances of finance receivables (up to)					$ 4,000,000,000
Principal balances of finance receivables through securitization transactions, sold	$ 1,700,000,000	$ 1,800,000,000	$ 1,700,000,000	$ 1,800,000,000
Receivable purchase agreement, remaining unused capacity	2,300,000,000		2,300,000,000
Consumer Loan \| Master Purchase Sale Agreement, 2017 Master Transfer Agreement and Other Partners
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Gain on loan sales	191,000,000	77,000,000	529,000,000	129,000,000
Securitization Transaction
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Principal balances of finance receivables through securitization transactions, sold	$ 3,400,000,000	$ 495,000,000	$ 3,400,000,000	$ 495,000,000