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Income Taxes (Details)	3 Months Ended				6 Months Ended
Income Taxes (Details)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Income Tax Contingency [Line Items]
Payments of tax made on behalf of non-controlling members	$ 2,000,000				$ 4,000,000	$ 0
Uncertain tax positions	0				0		$ 0
Related reserves	$ 0				$ 0		0
Effective income tax rate, expense (benefit)	0.00%		1.10%		0.30%	0.00%
Amount of cash savings as a result of tax attributes created from sales/exchanges, percent	0.85				0.85
Remaining tax benefits, percent	0.15				0.15
Tax receivable agreement, liability	$ 131,000,000				$ 131,000,000		82,000,000
Tax receivable agreement liability, current	48,000,000				48,000,000		17,000,000
Tax receivable agreement, liability, noncurrent	83,000,000				83,000,000		65,000,000
Tax receivable agreement payments					17,000,000	$ 0
Tax receivable agreement, unrecorded liability	2,000,000,000				2,000,000,000
Related Party
Income Tax Contingency [Line Items]
Payments of tax made on behalf of non-controlling members	1,000,000				3,000,000
Tax receivable agreement, liability	98,000,000				98,000,000		$ 61,000,000
Tax receivable agreement payments					13,000,000
Carvana Group
Income Tax Contingency [Line Items]
Establishment of deferred tax assets related to increases in tax basis in Carvana Group	64,000,000	$ 3,000,000	$ 25,000,000	$ 1,000,000
Carvana Group \| Additional Paid-in Capital
Income Tax Contingency [Line Items]
Establishment of deferred tax assets related to increases in tax basis in Carvana Group	64,000,000	$ 3,000,000	25,000,000	$ 1,000,000
LLC Unit Exchanges \| Carvana Group \| Additional Paid-in Capital
Income Tax Contingency [Line Items]
Establishment of deferred tax assets related to increases in tax basis in Carvana Group	$ 64,000,000		$ 25,000,000		$ 67,000,000	$ 26,000,000