Segment Reporting - Summary of Key Financial Information by Segment (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting [Abstract]
Number of reportable segments not disclosed flag	segments
Segment Reporting Information [Line Items]
Net sales and revenue	$ 185,019	$ 187,442	$ 171,842
Net income (loss) attributable to noncontrolling interests	83	(45)	(287)
Income (loss) before income taxes	3,117	8,519	10,403
Equity in net assets of nonconsolidated affiliates	5,681	7,102	10,613
Goodwill and intangibles	4,366	4,551	4,862
Total assets	281,284	279,761	273,064
Expenditures for property	9,303	10,830	10,970
Depreciation and amortization	11,980	11,456	11,737
Impairment charges	2,609	934	209
Equity income (loss) (Note 8)	184	(3,701)	773
Operating Segments
Segment Reporting Information [Line Items]
Net sales and revenue	184,805	187,532	171,720
Earnings (loss) before interest and taxes-adjusted	13,718	16,095	13,806
Adjustments	(9,627)	(6,427)	(1,865)
Equity in net assets of nonconsolidated affiliates	5,377	7,102	10,613
Goodwill and intangibles	4,366	4,551	4,862
Total assets	324,110	329,778	317,468
Expenditures for property	9,206	10,711	10,757
Depreciation and amortization	11,936	11,376	11,717
Impairment charges	2,609	934	209
Equity income (loss) (Note 8)	291	(3,701)	773
Operating Segments \| GM North America
Segment Reporting Information [Line Items]
Net sales and revenue	154,317	157,509	141,445
Segment expenses and other items	(143,866)	(142,981)	(129,139)
Earnings (loss) before interest and taxes-adjusted	10,452	14,528	12,306
Adjustments	(8,709)	(738)	(1,604)
Equity in net assets of nonconsolidated affiliates	3,187	4,447	2,595
Goodwill and intangibles	2,371	1,966	2,083
Total assets	162,079	165,905	155,908
Expenditures for property	8,687	10,266	10,147
Depreciation and amortization	6,489	5,963	6,146
Impairment charges	2,571	0	0
Equity income (loss) (Note 8)	558	955	196
Operating Segments \| GMI
Segment Reporting Information [Line Items]
Net sales and revenue	13,427	13,890	15,949
Segment expenses and other items	(12,690)	(13,587)	(14,739)
Earnings (loss) before interest and taxes-adjusted	737	303	1,210
Adjustments	(918)	(4,262)	217
Equity in net assets of nonconsolidated affiliates	1,073	1,449	6,348
Goodwill and intangibles	647	676	710
Total assets	22,924	21,769	26,225
Expenditures for property	457	415	522
Depreciation and amortization	466	506	589
Impairment charges	38	0	0
Equity income (loss) (Note 8)	(306)	(4,400)	440
Operating Segments \| Cruise
Segment Reporting Information [Line Items]
Net sales and revenue	1	257	102
Segment expenses and other items	(274)	(1,958)	(2,797)
Earnings (loss) before interest and taxes-adjusted	(273)	(1,701)	(2,695)
Adjustments	0	(1,107)	(478)
Equity in net assets of nonconsolidated affiliates	0	0	0
Goodwill and intangibles	0	570	715
Total assets	288	2,948	4,555
Expenditures for property	10	7	63
Depreciation and amortization	5	25	38
Impairment charges	0	933	209
Equity income (loss) (Note 8)	0	0	0
Operating Segments \| GM Financial
Segment Reporting Information [Line Items]
Net sales and revenue	17,060	15,875	14,225
Segment expenses and other items	(14,258)	(12,911)	(11,239)
Earnings (loss) before interest and taxes-adjusted	2,802	2,965	2,985
Adjustments	0	(320)	0
Equity in net assets of nonconsolidated affiliates	1,117	1,206	1,670
Goodwill and intangibles	1,348	1,339	1,354
Total assets	138,820	139,156	130,780
Expenditures for property	51	24	24
Depreciation and amortization	4,976	4,883	4,944
Impairment charges	0	0	0
Equity income (loss) (Note 8)	39	(256)	138
Corporate
Segment Reporting Information [Line Items]
Net sales and revenue	227	206	273
Adjustments	1,180	1,193	1,413
Equity in net assets of nonconsolidated affiliates	304	0	0
Goodwill and intangibles	0	0	0
Total assets	30,593	38,817	41,271
Expenditures for property	97	30	15
Depreciation and amortization	43	80	21
Impairment charges	0	0	0
Equity income (loss) (Note 8)	(108)	0	0
Eliminations/ Reclassifications
Segment Reporting Information [Line Items]
Net sales and revenue	(12)	(296)	(151)
Adjustments	4	33	35
Equity in net assets of nonconsolidated affiliates		0	0
Goodwill and intangibles		0	0
Total assets		(88,835)	(85,675)
Expenditures for property		88	198
Depreciation and amortization		0	0
Impairment charges		0	0
Equity income (loss) (Note 8)		0	0
Eliminations
Segment Reporting Information [Line Items]
Net sales and revenue	(13)
Equity in net assets of nonconsolidated affiliates	0
Goodwill and intangibles	0
Total assets	(73,419)
Expenditures for property	0
Depreciation and amortization	0
Impairment charges	0
Equity income (loss) (Note 8)	0
Automotive
Segment Reporting Information [Line Items]
Automotive interest income	854	967	1,109
Automotive interest expense	(727)	(846)	(911)
Automotive \| Operating Segments
Segment Reporting Information [Line Items]
Net sales and revenue	167,970	171,605	157,667
Automotive \| Operating Segments \| GMI
Segment Reporting Information [Line Items]
Net sales and revenue	13,427	13,890	15,949
Automotive \| Corporate
Segment Reporting Information [Line Items]
Net sales and revenue	$ 227	$ 206	$ 273

Earnings or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investment and net of income or loss attributable to noncontrolling interest, but before adjustments that are not considered part of our core operations, automotive interest expense, corporate interest income, gain or loss on extinguishment of debt and income tax expense or benefit.

No definition available.