Segment Reporting and Information about Geographic Areas - Schedule of Total Revenues and Gross Profit by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Revenue Reconciling Item [Line Items]
Total revenues	$ 24,927	$ 16,934	$ 48,256	$ 35,690
Gross profit	4,533	4,234	9,044	9,694
Automotive Segment [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Total revenues	23,418	16,068	45,218	34,208
Gross profit	4,255	4,137	8,598	9,669
Energy Generation and Storage [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Total revenues	1,509	866	3,038	1,482
Gross profit	$ 278	$ 97	$ 446	$ 25