v3.26.1
Segment Reporting (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Segment Reporting [Abstract]      
Number of reportable segments disclosed by definition GMNA, GMI, and GM Financial    
Segment Reporting Information [Line Items]      
Net sales and revenue $ 43,624 $ 44,020  
Net income (loss) attributable to noncontrolling interests 78 69  
Income (loss) before income taxes 3,347 3,572  
Equity in net assets of nonconsolidated affiliates 5,978 6,877 $ 5,681
Goodwill and intangibles 4,336 4,520 4,366
Total assets 280,974 282,104 $ 281,284
Expenditures for property 1,512 1,816  
Depreciation and amortization 3,005 2,934  
Impairment charges 25 0  
Equity income (loss) 266 303  
Automotive      
Segment Reporting Information [Line Items]      
Automotive interest income 173 191  
Automotive interest expense (158) (152)  
Operating Segments      
Segment Reporting Information [Line Items]      
Net sales and revenue 43,536 43,979  
Earnings (loss) before interest and taxes-adjusted 4,473 3,728  
Adjustments (999) 0  
Equity in net assets of nonconsolidated affiliates 5,631 6,688  
Goodwill and intangibles 4,336 4,520  
Total assets 320,341 333,546  
Expenditures for property 1,491 1,805  
Depreciation and amortization 3,001 2,907  
Impairment charges 25 0  
Equity income (loss) 311 303  
Operating Segments | Automotive      
Segment Reporting Information [Line Items]      
Net sales and revenue 39,349 39,860  
Corporate      
Segment Reporting Information [Line Items]      
Net sales and revenue 90 46  
Adjustments 219 260  
Equity in net assets of nonconsolidated affiliates 347 190  
Goodwill and intangibles 0 0  
Total assets 21,355 40,355  
Expenditures for property 21 11  
Depreciation and amortization 5 27  
Impairment charges 0 0  
Equity income (loss) (45) 0  
Corporate | Automotive      
Segment Reporting Information [Line Items]      
Net sales and revenue 90 46  
Eliminations      
Segment Reporting Information [Line Items]      
Net sales and revenue (1) (5)  
Adjustments 0 4  
Equity in net assets of nonconsolidated affiliates 0 0  
Goodwill and intangibles 0 0  
Total assets (60,722) (91,797)  
Expenditures for property 0 0  
Depreciation and amortization 0 0  
Impairment charges 0 0  
Equity income (loss) 0 0  
GMNA | Operating Segments      
Segment Reporting Information [Line Items]      
Net sales and revenue 36,401 37,388  
Segment expenses and other items (32,740) (34,101)  
Earnings (loss) before interest and taxes-adjusted 3,661 3,286  
Adjustments (1,077) 0  
Equity in net assets of nonconsolidated affiliates 3,262 3,970  
Goodwill and intangibles 2,347 2,508  
Total assets 164,049 170,812  
Expenditures for property 1,427 1,705  
Depreciation and amortization 1,541 1,588  
Impairment charges 25 0  
Equity income (loss) 136 242  
GMNA | Operating Segments | Automotive      
Segment Reporting Information [Line Items]      
Net sales and revenue 36,401 37,388  
GMI | Operating Segments      
Segment Reporting Information [Line Items]      
Net sales and revenue 2,859 2,427  
Segment expenses and other items (2,735) (2,397)  
Earnings (loss) before interest and taxes-adjusted 123 30  
Adjustments 78 0  
Equity in net assets of nonconsolidated affiliates 1,224 1,492  
Goodwill and intangibles 639 669  
Total assets 19,973 21,428  
Expenditures for property 53 94  
Depreciation and amortization 119 102  
Impairment charges 0 0  
Equity income (loss) 161 49  
GMI | Operating Segments | Automotive      
Segment Reporting Information [Line Items]      
Net sales and revenue 2,859 2,427  
Cruise | Operating Segments      
Segment Reporting Information [Line Items]      
Net sales and revenue   1  
Segment expenses and other items   (274)  
Earnings (loss) before interest and taxes-adjusted   (273)  
Adjustments   0  
Equity in net assets of nonconsolidated affiliates   0  
Goodwill and intangibles   1  
Total assets   251  
Expenditures for property   2  
Depreciation and amortization   5  
Impairment charges   0  
Equity income (loss)   0  
GM Financial | Operating Segments      
Segment Reporting Information [Line Items]      
Net sales and revenue 4,276 4,164  
Segment expenses and other items (3,588) (3,479)  
Earnings (loss) before interest and taxes-adjusted 688 685  
Adjustments 0 0  
Equity in net assets of nonconsolidated affiliates 1,144 1,226  
Goodwill and intangibles 1,349 1,342  
Total assets 136,319 141,056  
Expenditures for property 12 4  
Depreciation and amortization 1,341 1,212  
Impairment charges 0 0  
Equity income (loss) $ 14 $ 12