v3.26.3
Stockholders' Equity and Noncontrolling Interests - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2026
Sep. 30, 2025
Oct. 20, 2026
Jan. 31, 2026
Dec. 31, 2025
Feb. 28, 2025
Class of Stock [Line Items]                        
Preferred stock shares authorized (in shares) 2,000,000,000.0           2,000,000,000.0       2,000,000,000.0  
Common stock shares authorized (in shares) 5,000,000,000.0           5,000,000,000.0       5,000,000,000.0  
Preferred stock shares issued (in shares) 0           0       0  
Preferred stock shares outstanding (in shares) 0           0       0  
Common stock shares outstanding (in shares) 849,000,000           849,000,000       904,000,000  
Common stock shares issued (in shares) 849,000,000           849,000,000       904,000,000  
Dividends declared per common share (in dollars per share) $ 0.18     $ 0.15     $ 0.54 $ 0.42        
Cash dividends paid on common stock $ 156 $ 160 $ 164 $ 141 $ 144 $ 116 $ 480 $ 401        
Purchase of common stock $ 2,500 $ 2,000 $ 800 1,500 $ 0 $ 2,012            
Cruise Preferred Shares                        
Class of Stock [Line Items]                        
Increase in equity due to preferred stock redemption       538       538        
GM Cruise Holdings LLC                        
Class of Stock [Line Items]                        
Net income attributable to shareholders and transfers to the noncontrolling interests       $ 1,300       $ 6,500        
Common Stock Repurchase Program                        
Class of Stock [Line Items]                        
Increased capacity under common stock repurchase plan                   $ 6,000   $ 2,000
Shares repurchased and retired during period (in shares)             65,000,000 27,000,000        
Capacity under common stock repurchase plan                   $ 6,300    
Purchase of common stock             $ 5,300 $ 1,500        
Common Stock Repurchase Program | Subsequent Event                        
Class of Stock [Line Items]                        
Increased capacity under common stock repurchase plan                 $ 20,000      
Accelerated Share Repurchase                        
Class of Stock [Line Items]                        
Shares repurchased and retired during period (in shares)               43,000,000