v3.25.4
Segment Reporting - Revenues and long-lived assets by geographic region (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]      
GM Financial $ 17,048 $ 15,836 $ 14,184
Total net sales and revenue (Note 3) 185,019 187,442 171,842
Long-lived assets $ 85,369 $ 83,490 $ 80,903
Mexico | Assets, Total | Geographic Concentration Risk      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Concentration risk, percentage 11.00% 12.00% 12.00%
Automotive | U.S.      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Automotive net sales and revenue $ 138,108 $ 140,536 $ 127,472
Long-lived assets 37,231 35,986 34,142
Automotive | Non-U.S.      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Automotive net sales and revenue 29,863 31,070 30,186
Long-lived assets 14,327 15,811 16,054
GM Financial      
Revenues from External Customers and Long-Lived Assets [Line Items]      
GM Financial 17,048 15,836 14,184
GM Financial | U.S.      
Revenues from External Customers and Long-Lived Assets [Line Items]      
GM Financial 14,577 13,575 12,133
Long-lived assets 29,562 28,129 27,397
GM Financial | Non-U.S.      
Revenues from External Customers and Long-Lived Assets [Line Items]      
GM Financial 2,472 2,261 2,051
Long-lived assets $ 4,250 $ 3,563 $ 3,309