v3.26.1
Stockholders' Equity and Noncontrolling Interests - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended
Feb. 28, 2025
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 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
Common stock shares authorized (in shares)   5,000,000,000.0       5,000,000,000.0
Preferred stock shares issued (in shares)   0       0
Preferred stock shares outstanding (in shares)   0       0
Common stock shares outstanding (in shares)   902,000,000       904,000,000
Common stock shares issued (in shares)   902,000,000       904,000,000
Dividends declared per common share (in dollars per share)   $ 0.18   $ 0.12    
Cash dividends paid on common stock   $ 164   $ 116    
Purchase of common stock   $ 800   2,012    
Cruise Preferred Shares            
Class of Stock [Line Items]            
Increase in equity due to preferred stock redemption       538    
GM Cruise Holdings LLC            
Class of Stock [Line Items]            
Net income attributable to shareholders and transfers to the noncontrolling interests       $ 3,300    
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  
Increased capacity under common stock repurchase plan         $ 6,000  
Shares repurchased and retired during period (in shares)   11,000,000   800,000,000