v3.26.1
Preferred Stock - Schedule of Non-Cumulative Perpetual Preferred Stock (Details) - USD ($)
$ in Millions
 6 Months Ended
May 01, 2026
Jun. 30, 2026
Dec. 31, 2025
Class of Stock [Line Items]      
Shares Outstanding (in shares)   7,000  
Liquidation Amount   $ 700  
Carrying Amount   $ 682 $ 349
Series C      
Class of Stock [Line Items]      
Annual Dividend Rate   6.60%  
Shares Outstanding (in shares)   0  
Liquidation Amount   $ 0  
Carrying Amount   $ 0 59
Basis spread on variable rate 5.18161%    
Series C | Variable Rate Basis Spread, Percentage One      
Class of Stock [Line Items]      
Basis spread on variable rate 0.26161%    
Series C | Variable Rate Basis Spread, Percentage Two      
Class of Stock [Line Items]      
Basis spread on variable rate 4.92%    
Series E      
Class of Stock [Line Items]      
Annual Dividend Rate   6.50%  
Shares Outstanding (in shares)   1,500  
Liquidation Amount   $ 150  
Carrying Amount   $ 145 145
Series F      
Class of Stock [Line Items]      
Annual Dividend Rate   4.70%  
Shares Outstanding (in shares)   1,500  
Liquidation Amount   $ 150  
Carrying Amount   $ 145 145
Series H      
Class of Stock [Line Items]      
Annual Dividend Rate   6.75%  
Shares Outstanding (in shares)   4,000  
Liquidation Amount   $ 400  
Carrying Amount   $ 392 $ 0