v3.26.1
Variable Interest Entities (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Consolidated [Abstract]      
Total assets $ 282,742 $ 281,284 $ 289,384
Total liabilities 219,101 218,116  
Variable Interest Entity, Not Primary Beneficiary      
Consolidated [Abstract]      
Total assets 4,300 3,600  
Total liabilities 800    
Maximum loss exposure amount 7,100 8,500  
Variable Interest Entity, Not Primary Beneficiary | Battery Cell Manufacturing Joint Ventures | Capital Addition Purchase Commitments      
Consolidated [Abstract]      
Committed capital contributions 2,000 4,000  
GM Financial      
Consolidated [Abstract]      
GM Financial receivables – current 44,870 45,266  
GM Financial receivables – non-current 44,454 44,384  
GM Financial short-term debt and current portion of long-term debt 36,498 35,012  
GM Financial long-term debt 75,220 79,018  
GM Financial | Consolidated VIE      
Consolidated [Abstract]      
Restricted cash – current 2,717 2,635  
Restricted cash – non-current 260 253  
GM Financial receivables – current 28,025 29,126  
GM Financial receivables – non-current 20,425 20,128  
GM Financial equipment on operating lease related assets 13,806 13,791  
GM Financial short-term debt and current portion of long-term debt 19,188 17,681  
GM Financial long-term debt $ 27,261 $ 29,232