Segment Reporting - Summary of key financial information by segment (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net sales and revenue	$ 187,442	$ 171,842	$ 156,735
Segment expenses and other items	(178,999)	(161,350)	(144,386)
Adjustments	6,491	1,865	2,125
Earnings (loss) before interest and taxes-adjusted	14,934	12,357	14,474
Net loss (income) attributable to noncontrolling interests	45	287	226
Income (loss) before income taxes	8,519	10,403	11,597
Income tax benefit (expense)	(2,556)	(563)	(1,888)
Net income (loss)	5,963	9,840	9,708
Net income (loss) attributable to stockholders	6,008	10,127	9,934
Equity in net assets of nonconsolidated affiliates	7,102	10,613	10,176
Goodwill and intangible assets	4,551	4,862	4,945
Total Assets	279,761	273,064	264,037
Expenditures for property	10,830	10,970	9,238
Depreciation and amortization	11,456	11,737	11,276
Impairment charges	934	209	12
Equity income (loss)(c)	(3,701)	773	837
Operating Segments \| Cruise
Segment Reporting Information [Line Items]
Net sales and revenue	257	102	102
Segment expenses and other items	(3,065)	(3,275)	(3,049)
Adjustments	1,107	478	1,057
Earnings (loss) before interest and taxes-adjusted	(1,701)	(2,695)	(1,890)
Equity in net assets of nonconsolidated affiliates	0	0	0
Goodwill and intangible assets	570	715	727
Total Assets	2,948	4,555	5,510
Expenditures for property	7	63	197
Depreciation and amortization	25	38	53
Impairment charges	933	209	0
Equity income (loss)(c)	0	0	0
Operating Segments \| GM Financial
Segment Reporting Information [Line Items]
Net sales and revenue	15,875	14,225	12,766
Segment expenses and other items	(13,231)	(11,239)	(8,690)
Adjustments	320	0	0
Earnings (loss) before interest and taxes-adjusted	2,965	2,985	4,076
Equity in net assets of nonconsolidated affiliates	1,206	1,670	1,665
Goodwill and intangible assets	1,339	1,354	1,341
Total Assets	139,156	130,780	121,544
Expenditures for property	24	24	44
Depreciation and amortization	4,883	4,944	4,888
Impairment charges	0	0	0
Equity income (loss)(c)	(256)	138	173
Eliminations/ Reclassifications
Segment Reporting Information [Line Items]
Net sales and revenue	(296)	(151)	(107)
Segment expenses and other items	263	116	109
Adjustments	0	0	0
Earnings (loss) before interest and taxes-adjusted	(33)	(35)	2
Equity in net assets of nonconsolidated affiliates	0	0	0
Goodwill and intangible assets	0	0	0
Total Assets	(3,717)	(2,817)	(1,436)
Expenditures for property	88	198	(10)
Depreciation and amortization	0	0	0
Impairment charges	0	0	0
Equity income (loss)(c)	0	0	0
Automotive
Segment Reporting Information [Line Items]
Interest Income	967	1,109	460
Total interest expense	846	911	987
Automotive \| Operating Segments
Segment Reporting Information [Line Items]
Net sales and revenue	171,605	157,667	143,974
Segment expenses and other items	(162,966)	(146,951)	(132,756)
Adjustments	5,064	1,387	1,068
Earnings (loss) before interest and taxes-adjusted	13,703	12,103	12,286
Equity in net assets of nonconsolidated affiliates	5,896	8,943	8,511
Goodwill and intangible assets	2,642	2,793	2,877
Total Assets	141,374	140,546	138,419
Expenditures for property	10,711	10,684	9,007
Depreciation and amortization	6,548	6,755	6,335
Impairment charges	0	0	12
Equity income (loss)(c)	(3,445)	635	663
Automotive \| Operating Segments \| GMNA
Segment Reporting Information [Line Items]
Net sales and revenue	157,509	141,445	128,378
Segment expenses and other items	(143,719)	(130,743)	(115,801)
Adjustments	738	1,604	411
Earnings (loss) before interest and taxes-adjusted	14,528	12,306	12,988
Equity in net assets of nonconsolidated affiliates	4,447	2,595	1,820
Goodwill and intangible assets	1,966	2,083	2,134
Total Assets	165,905	155,908	157,250
Expenditures for property	10,266	10,147	8,280
Depreciation and amortization	5,963	6,146	5,800
Impairment charges	0	0	11
Equity income (loss)(c)	955	196	(9)
Automotive \| Operating Segments \| GMI
Segment Reporting Information [Line Items]
Net sales and revenue	13,890	15,949	15,420
Segment expenses and other items	(17,849)	(14,522)	(14,934)
Adjustments	4,262	(217)	657
Earnings (loss) before interest and taxes-adjusted	303	1,210	1,143
Equity in net assets of nonconsolidated affiliates	1,449	6,348	6,691
Goodwill and intangible assets	676	710	740
Total Assets	21,769	26,225	24,808
Expenditures for property	415	522	706
Depreciation and amortization	506	589	513
Impairment charges	0	0	1
Equity income (loss)(c)	(4,400)	440	672
Automotive \| Corporate
Segment Reporting Information [Line Items]
Net sales and revenue	206	273	177
Segment expenses and other items	(1,398)	(1,686)	(2,023)
Adjustments	64	0	0
Earnings (loss) before interest and taxes-adjusted	(1,129)	(1,413)	(1,846)
Equity in net assets of nonconsolidated affiliates	0	0	0
Goodwill and intangible assets	0	0	4
Total Assets	38,817	41,271	60,518
Expenditures for property	30	15	20
Depreciation and amortization	80	21	21
Impairment charges	0	0	0
Equity income (loss)(c)	0	0	0
Automotive \| Eliminations/ Reclassifications
Segment Reporting Information [Line Items]
Net sales and revenue	0	0	0
Segment expenses and other items	0	0	0
Adjustments	0	0	0
Earnings (loss) before interest and taxes-adjusted	0	0	0
Equity in net assets of nonconsolidated affiliates	0	0	0
Goodwill and intangible assets	0	0	0
Total Assets	(85,117)	(82,858)	(104,157)
Expenditures for property	0	0	0
Depreciation and amortization	0	0	0
Impairment charges	0	0	0
Equity income (loss)(c)	$ 0	$ 0	$ 0

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.