v3.26.1
Stockholders' Equity - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 01, 2026
Apr. 22, 2026
Jun. 02, 2025
Feb. 12, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Jul. 24, 2025
Jul. 27, 2022
Class of Stock [Line Items]                      
Value of shares repurchased             $ 3,377 $ 1,833      
Proceeds from offering   $ 1,500                  
Value of shares redeemed $ 2,100   $ 2,500   $ 2,055 $ 2,458 $ 2,055 2,458      
Preferred stock, par value (in USD per share)         $ 0.01   $ 0.01   $ 0.01    
Secondary Public Stock Offering | TD Group US Holdings LLC [Member]                      
Class of Stock [Line Items]                      
Sales price per share (in USD per share)       $ 79.25              
Proceeds from offering       $ 13,100              
Common stock                      
Class of Stock [Line Items]                      
Shares repurchased (in shares)           3,900,000          
Share repurchase, authorized amount                     $ 15,000
Value of shares repurchased         $ 1,008 $ 353 $ 3,407 353      
Shares repurchased (excluding tax)           $ 351          
Common stock | New Share Repurchase Authorization                      
Class of Stock [Line Items]                      
Shares repurchased (in shares)         11,200,000   35,500,000        
Share repurchase, authorized amount                   $ 20,000  
Value of shares repurchased         $ 1,000   $ 3,400        
Remaining amount authorized for share repurchase         $ 11,100   $ 11,100        
Common stock | Secondary Public Stock Offering | TD Group US Holdings LLC [Member]                      
Class of Stock [Line Items]                      
Number of shares sold (in shares)       133,800,000              
Nonvoting common stock                      
Class of Stock [Line Items]                      
Shares repurchased (in shares)       19,200,000              
Per share value of shares repurchased (in USD per share)       $ 77.982              
Value of shares repurchased       $ 1,500       $ 1,512      
Common stock outstanding (in shares)       0              
Nonvoting common stock | Secondary Public Stock Offering | TD Group US Holdings LLC [Member]                      
Class of Stock [Line Items]                      
Number of shares sold (in shares)       31,700,000              
Series G                      
Class of Stock [Line Items]                      
Number of shares redeemed (in shares)     24,580                
Deemed dividend     $ 30                
Depository Shares                      
Class of Stock [Line Items]                      
Number of shares sold (in shares)   1,500,000                  
Number of shares redeemed (in shares) 2,055,433   2,457,964                
Redemption price (in USD per share) $ 1,000 $ 1,000 $ 1,000                
Series L                      
Class of Stock [Line Items]                      
Ownership interest in shares (percent)   1.00%                  
Redemption price (in USD per share)   $ 100,000     $ 100,000   $ 100,000        
Fixed rate (percent)   6.10%         6.10%        
Preferred stock, par value (in USD per share)   $ 0.01                  
Series I                      
Class of Stock [Line Items]                      
Number of shares redeemed (in shares) 20,554                    
Ownership interest in shares redeemed 1.00%   1.00%                
Redemption price (in USD per share)         $ 0   $ 0        
Deemed dividend $ 25                    
Fixed rate (percent)             0.00%