v3.26.1
SHAREHOLDERS' EQUITY (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Class of Stock [Line Items]          
Shares outstanding (in shares) 891,900   891,900   885,000
Carrying Amount $ 2,881   $ 2,881   $ 2,731
Investment, Variable Interest Rate, Type [Extensible Enumeration] Secured Overnight Financing Rate (SOFR) [Member]   Secured Overnight Financing Rate (SOFR) [Member]    
Amount $ 41 $ 27 $ 82 $ 54  
Retained Earnings          
Class of Stock [Line Items]          
Amount $ 41 $ 27 $ 82 $ 54  
Series B          
Class of Stock [Line Items]          
Shares outstanding (in shares) 35,500   35,500    
Carrying Amount $ 24   $ 24   24
Preferred stock, basis spread adjustment on variable rate 0.26%   0.26%    
Preferred stock, variable rate basis spread 2.70%   2.70%    
Cash dividend declared per share (in usd per share) $ 16.59 $ 18.04 $ 33.17 $ 36.20  
Series B | Retained Earnings          
Class of Stock [Line Items]          
Amount $ 1 $ 1 $ 2 $ 2  
Series F          
Class of Stock [Line Items]          
Shares outstanding (in shares) 5,000   5,000    
Dividend Rate     5.625%    
Carrying Amount $ 494   $ 494   494
Cash dividend declared per share (in usd per share) $ 1,406.25 $ 1,406.25 $ 2,812.5 $ 2,812.5  
Series F | Retained Earnings          
Class of Stock [Line Items]          
Amount $ 7 $ 8 $ 14 $ 14  
Series G          
Class of Stock [Line Items]          
Shares outstanding (in shares) 5,000   5,000    
Dividend Rate     4.45%    
Carrying Amount $ 494   $ 494   494
Cash dividend declared per share (in usd per share) $ 1,112.5 $ 1,112.5 $ 2,225 $ 2,225  
Series G | Retained Earnings          
Class of Stock [Line Items]          
Amount $ 6 $ 5 $ 12 $ 11  
Series H          
Class of Stock [Line Items]          
Shares outstanding (in shares) 500,000   500,000    
Dividend Rate     4.50%    
Carrying Amount $ 486   $ 486   486
Cash dividend declared per share (in usd per share) $ 11.25 $ 11.25 $ 22.50 $ 22.50  
Series H | Retained Earnings          
Class of Stock [Line Items]          
Amount $ 6 $ 5 $ 12 $ 11  
Series I          
Class of Stock [Line Items]          
Shares outstanding (in shares) 7,000   7,000    
Dividend Rate     5.70%    
Carrying Amount $ 175   $ 175   175
Redemption price (per share) $ 25,000   $ 25,000    
Cash dividend declared per share (in usd per share) $ 356.25 $ 356.25 $ 712.50 $ 712.50  
Series I | Retained Earnings          
Class of Stock [Line Items]          
Amount $ 2 $ 3 $ 4 $ 5  
Series J          
Class of Stock [Line Items]          
Shares outstanding (in shares) 325,000   325,000    
Dividend Rate     6.875%    
Carrying Amount $ 317   $ 317   317
Cash dividend declared per share (in usd per share) $ 17.19 $ 17.19 $ 34.38 $ 34.38  
Series J | Retained Earnings          
Class of Stock [Line Items]          
Amount $ 6 $ 5 $ 12 $ 11  
Series K          
Class of Stock [Line Items]          
Shares outstanding (in shares) 7,500   7,500    
Dividend Rate     6.25%    
Carrying Amount $ 741   $ 741   741
Cash dividend declared per share (in usd per share) $ 1,562.5   $ 3,125    
Series K | Retained Earnings          
Class of Stock [Line Items]          
Amount $ 11   $ 22    
Series L          
Class of Stock [Line Items]          
Shares outstanding (in shares) 6,900   6,900    
Dividend Rate     5.50%    
Carrying Amount $ 150   $ 150   $ 0
Cash dividend declared per share (in usd per share) $ 343.75   $ 687.50    
Series L | Retained Earnings          
Class of Stock [Line Items]          
Amount $ 2   $ 4    
Series B, H and J Preferred Stock          
Class of Stock [Line Items]          
Redemption price (per share) $ 1,000   $ 1,000    
Series F and G Preferred Stock          
Class of Stock [Line Items]          
Redemption price (per share) $ 100,000   $ 100,000