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Inventory - Schedule of Inventory (Detail) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 2,067 $ 1,508
Work in process 858 493
Finished goods [1] 1,318 1,666
Service parts 490 434
Total $ 4,733 $ 4,101
[1] Finished goods inventory includes vehicles in transit to fulfill customer orders, new vehicles available for sale, used vehicles, energy storage products and Solar Roof products available for sale.