v3.26.1
Stockholders' Equity and Noncontrolling Interests - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 6 Months Ended
Feb. 28, 2025
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Jan. 31, 2026
Dec. 31, 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)   877,000,000       877,000,000     904,000,000
Common stock shares issued (in shares)   877,000,000       877,000,000     904,000,000
Dividends declared per common share (in dollars per share)   $ 0.18   $ 0.15   $ 0.36 $ 0.27    
Cash dividends paid on common stock   $ 160 $ 164 $ 144 $ 116 $ 324 $ 260    
Purchase of common stock   $ 2,000 $ 800 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       $ 1,900     5,200    
Accelerated Share Repurchase                  
Class of Stock [Line Items]                  
Capacity under common stock repurchase plan $ 2,000                
Amount advanced during period $ 2,000                
Common stock shares repurchased during period (in shares) 33,000,000                
Purchase of common stock $ 1,600                
Shares repurchased and retired during period (in shares)       43,000,000          
Common Stock Repurchase Program                  
Class of Stock [Line Items]                  
Capacity under common stock repurchase plan               $ 6,300  
Purchase of common stock             $ 2,800    
Increased capacity under common stock repurchase plan               $ 6,000  
Shares repurchased and retired during period (in shares)           36,000,000