v3.26.1
Segment Reporting (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting [Abstract]          
Number of reportable segments disclosed by definition     GMNA, GMI, and GM Financial    
Segment Reporting [Line Items]          
Net sales and revenue $ 48,026 $ 47,122 $ 91,650 $ 91,141  
Net income (loss) attributable to noncontrolling interests 48 (1) 126 68  
Income (loss) before income taxes 1,568 2,375 4,915 5,946  
Equity in net assets of nonconsolidated affiliates 5,663 6,103 5,663 6,103 $ 5,681
Goodwill and intangibles 4,305 4,488 4,305 4,488 4,366
Total assets 282,742 289,384 282,742 289,384 281,284
Expenditures for property 1,942 2,137 3,454 3,953  
Depreciation and amortization 3,102 3,026 6,107 5,959  
Impairment charges 1 18 26 18  
Equity income (loss) (324) 91 (58) 394  
Additions, interest accretion, and other 1,155 370 2,225 502  
Automotive          
Segment Reporting [Line Items]          
Automotive interest income 183 200 356 391  
Automotive interest expense (151) (198) (309) (350)  
Operating Segments          
Segment Reporting [Line Items]          
Net sales and revenue 47,870 47,067 91,406 91,046  
Earnings (loss) before interest and taxes-adjusted 4,241 3,323 8,714 7,051  
Adjustments (2,456) (655) (3,455) (655)  
Equity in net assets of nonconsolidated affiliates 5,278 5,877 5,278 5,877  
Goodwill and intangibles 4,305 4,488 4,305 4,488  
Total assets 324,717 328,014 324,717 328,014  
Expenditures for property 1,912 2,108 3,403 3,913  
Depreciation and amortization 3,096 3,017 6,096 5,924  
Impairment charges 1 18 26 18  
Equity income (loss) (288) 105 23 408  
Operating Segments | Automotive          
Segment Reporting [Line Items]          
Net sales and revenue 43,762 42,869 83,111 82,729  
Corporate          
Segment Reporting [Line Items]          
Net sales and revenue 159 57 249 103  
Adjustments 298 294 517 554  
Equity in net assets of nonconsolidated affiliates 385 226 385 226  
Goodwill and intangibles 0 0 0 0  
Total assets 24,074 28,335 24,074 28,335  
Expenditures for property 30 28 51 39  
Depreciation and amortization 6 9 11 36  
Impairment charges 0 0 0 0  
Equity income (loss) (37) (14) (82) (14)  
Corporate | Automotive          
Segment Reporting [Line Items]          
Net sales and revenue 159 57 249 103  
Eliminations          
Segment Reporting [Line Items]          
Net sales and revenue (3) (2) (4) (7)  
Adjustments 0 0 0 4  
Equity in net assets of nonconsolidated affiliates 0 0 0 0  
Goodwill and intangibles 0 0 0 0  
Total assets (66,049) (66,965) (66,049) (66,965)  
Expenditures for property 0 0 0 0  
Depreciation and amortization 0 0 0 0  
Impairment charges 0 0 0 0  
Equity income (loss) 0 0 0 0  
GMNA | Operating Segments          
Segment Reporting [Line Items]          
Net sales and revenue 39,912 39,486 76,312 76,873  
Segment expenses and other items (36,466) (37,071) (69,206) (71,172)  
Earnings (loss) before interest and taxes-adjusted 3,446 2,415 7,107 5,702  
Adjustments (2,456) (395) (3,533) (395)  
Equity in net assets of nonconsolidated affiliates 3,087 3,109 3,087 3,109  
Goodwill and intangibles 2,323 2,479 2,323 2,479  
Total assets 168,856 161,262 168,856 161,262  
Expenditures for property 1,834 2,014 3,260 3,719  
Depreciation and amortization 1,649 1,642 3,190 3,230  
Impairment charges 1 0 26 0  
Equity income (loss) (383) 12 (247) 255  
GMNA | Operating Segments | Automotive          
Segment Reporting [Line Items]          
Net sales and revenue 39,912 39,486 76,312 76,873  
GMI | Operating Segments          
Segment Reporting [Line Items]          
Net sales and revenue 3,691 3,326 6,550 5,753  
Segment expenses and other items (3,501) (3,122) (6,236) (5,519)  
Earnings (loss) before interest and taxes-adjusted 190 204 314 234  
Adjustments 0 (260) 78 (260)  
Equity in net assets of nonconsolidated affiliates 1,014 1,511 1,014 1,511  
Goodwill and intangibles 631 663 631 663  
Total assets 18,922 23,418 18,922 23,418  
Expenditures for property 61 89 113 182  
Depreciation and amortization 122 131 241 233  
Impairment charges 0 18 0 18  
Equity income (loss) 82 77 243 125  
GMI | Operating Segments | Automotive          
Segment Reporting [Line Items]          
Net sales and revenue 3,691 3,326 6,550 5,753  
Cruise | Operating Segments          
Segment Reporting [Line Items]          
Net sales and revenue   0   1  
Segment expenses and other items   0   (274)  
Earnings (loss) before interest and taxes-adjusted   0   (273)  
Adjustments   0   0  
Equity in net assets of nonconsolidated affiliates   0   0  
Goodwill and intangibles   1   1  
Total assets   441   441  
Expenditures for property   0   2  
Depreciation and amortization   0   5  
Impairment charges   0   0  
Equity income (loss)   0   0  
GM Financial | Operating Segments          
Segment Reporting [Line Items]          
Net sales and revenue 4,267 4,255 8,543 8,419  
Segment expenses and other items (3,662) (3,551) (7,250) (7,030)  
Earnings (loss) before interest and taxes-adjusted 605 704 1,294 1,389  
Adjustments 0 0 0 0  
Equity in net assets of nonconsolidated affiliates 1,178 1,257 1,178 1,257  
Goodwill and intangibles 1,351 1,346 1,351 1,346  
Total assets 136,939 142,893 136,939 142,893  
Expenditures for property 18 6 29 10  
Depreciation and amortization 1,325 1,243 2,665 2,456  
Impairment charges 0 0 0 0  
Equity income (loss) 13 $ 16 27 $ 28  
GMNA          
Segment Reporting [Line Items]          
Additions, interest accretion, and other         $ 7,900
GMNA | Impaired Emissions Credits          
Segment Reporting [Line Items]          
Additions, interest accretion, and other $ 493   $ 493