Property and Equipment, Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense			$ 101	$ 46
Property, Plant and Equipment
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 85	$ 30	138	57
Property, Plant and Equipment | Vehicle Inventory
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	12	7	21	12
Property, Plant and Equipment | Selling, general and administrative
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	45	23	81	45
Property, Plant and Equipment | Cost of sales
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	28	5	36	9
Property, Plant and Equipment | Cost of sales, previously capitalized to vehicle inventory
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 11	$ 5	$ 18	$ 9