Segment Reporting and Information about Geographic Areas - Schedule of Total Revenues and Gross Profit by Reportable Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues	$ 97,690	$ 96,773	$ 81,462
Cost of revenues	80,240	79,113	60,609
Gross profit	17,450	17,660	20,853
Automotive segment
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues	87,604	90,738	77,553
Cost of revenues	72,794	74,219	56,988
Gross profit	14,810	16,519	20,565
Depreciation and amortization	3,680	3,450	2,810
Energy generation and storage segment
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues	10,086	6,035	3,909
Cost of revenues	7,446	4,894	3,621
Gross profit	2,640	1,141	288
Depreciation and amortization	$ 377	$ 343	$ 331