Segment Reporting and Information about Geographic Areas - Schedule of Total Revenues and Gross Profit by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues	$ 23,350	$ 21,454	$ 71,606	$ 57,144
Gross profit	4,178	5,382	13,222	15,076
Automotive segment
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues	21,791	20,337	67,009	54,545
Gross profit	3,797	5,278	12,395	14,947
Energy generation and storage segment
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues	1,559	1,117	4,597	2,599
Gross profit	$ 381	$ 104	$ 827	$ 129