v3.26.1
Stockholders' Equity - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Jun. 01, 2026
Apr. 22, 2026
Feb. 12, 2025
Mar. 31, 2026
Mar. 31, 2025
May 04, 2026
Dec. 31, 2025
Jul. 24, 2025
Jul. 27, 2022
Class of Stock [Line Items]                  
Value of shares repurchased       $ 2,378 $ 1,500        
Preferred stock, par value (in USD per share)       $ 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]                  
Share repurchase, authorized amount                 $ 15,000
Value of shares repurchased       $ 2,399 $ 1,512        
Common stock | New Share Repurchase Authorization                  
Class of Stock [Line Items]                  
Shares repurchased (in shares)       24,300,000          
Share repurchase, authorized amount               $ 20,000  
Value of shares repurchased       $ 2,400          
Remaining amount authorized for share repurchase       $ 12,100          
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            
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            
Depository Shares | Subsequent Event                  
Class of Stock [Line Items]                  
Liquidation preference per share (in USD per share)   $ 1,000       $ 1,000      
Depository Shares | Subsequent Event | Expected                  
Class of Stock [Line Items]                  
Number of shares to be redeemed (in shares) 2,055,433                
Series L | Subsequent Event                  
Class of Stock [Line Items]                  
Number of shares sold (in shares)   1,500,000              
Proceeds from offering   $ 1,500              
Ownership interest in shares (percent)   1.00%              
Fixed rate (percent)   6.10%              
Preferred stock, par value (in USD per share)   $ 0.01              
Liquidation preference per share (in USD per share)   $ 100,000              
Series I                  
Class of Stock [Line Items]                  
Fixed rate (percent)       4.00%          
Liquidation preference per share (in USD per share)       $ 100,000          
Series I | Subsequent Event | Expected                  
Class of Stock [Line Items]                  
Ownership interest in shares redeemed 1.00%                
Liquidation preference per share (in USD per share) $ 1,000                
Number of shares to be redeemed (in shares) 20,554                
Value of stock to be redeemed $ 2,100