v3.26.1
Equity in Net Assets of Nonconsolidated Affiliates (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]              
Equity income (loss) $ (324)   $ 91   $ (58) $ 394  
Impairment of investment in nonconsolidated affiliate 364            
Automotive China JVs' net sales 48,026   47,122   91,650 91,141  
Automotive China JVs' net income (loss) 1,354 $ 2,705 1,894 $ 2,853 4,058 4,747  
Dividends declared         1,200   $ 926
Distributions received     189     977  
Automotive China joint ventures equity income (loss)              
Schedule of Equity Method Investments [Line Items]              
Automotive China JVs' net sales 6,207   6,084   11,900 11,149  
Automotive China JVs' net income (loss) 252   127   591 197  
Equity Method Investment, Nonconsolidated Investee or Group of Investees              
Schedule of Equity Method Investments [Line Items]              
Undistributed earnings 2,000       2,000   1,800
Undistributed losses 3,200       3,200   3,200
Equity Method Investee              
Schedule of Equity Method Investments [Line Items]              
Undistributed earnings 1,200       1,200   $ 1,500
Automotive China joint ventures equity income (loss)              
Schedule of Equity Method Investments [Line Items]              
Equity income (loss) 83   71   248 116  
Other joint ventures equity income (loss)              
Schedule of Equity Method Investments [Line Items]              
Equity income (loss) $ (408)   $ 19   $ (307) 277  
Ultium Cells Holdings LLC              
Schedule of Equity Method Investments [Line Items]              
Equity income (loss)           $ 252  
Automotive China Joint Ventures and Ultium Cell Holdings LLC              
Schedule of Equity Method Investments [Line Items]              
Change in ownership percentage         0.00%