v3.26.1
Shareholders' Equity and Accumulated Other Comprehensive Income (Loss) (Preferred Stock Issuances) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Sep. 15, 2029
Aug. 15, 2029
Jun. 30, 2026
Jun. 30, 2026
Dec. 31, 2025
Class of Stock [Line Items]          
Liquidation Amount     $ 1,400 $ 1,400  
Preferred stock, shares issued     1,400,000 1,400,000 1,400,000
Preferred stock, shares outstanding     1,400,000 1,400,000  
Carrying Amount     $ 1,369 $ 1,369 $ 1,369
Series C          
Class of Stock [Line Items]          
Dividend rate, percentage       5.70%  
Liquidation Amount     $ 500 $ 500  
Preferred stock, liquidation preference per share (in usd per share)     $ 1,000 $ 1,000  
Preferred stock, shares issued     500,000 500,000  
Preferred stock, shares outstanding     500,000 500,000  
Carrying Amount     $ 490 $ 490 490
Series C Preferred Stock Dividend Scenario 1          
Class of Stock [Line Items]          
Dividend rate, percentage     5.70%    
Series E          
Class of Stock [Line Items]          
Dividend rate, percentage       4.45%  
Liquidation Amount     $ 400 $ 400  
Preferred stock, liquidation preference per share (in usd per share)     $ 1,000 $ 1,000  
Preferred stock, shares issued     400,000 400,000  
Preferred stock, shares outstanding     400,000 400,000  
Carrying Amount     $ 390 $ 390 390
Series F Preferred Stock          
Class of Stock [Line Items]          
Dividend rate, percentage       6.95%  
Liquidation Amount     $ 500 $ 500  
Preferred stock, liquidation preference per share (in usd per share)     $ 1,000 $ 1,000  
Preferred stock, shares issued     500,000 500,000  
Preferred stock, shares outstanding     500,000 500,000  
Carrying Amount     $ 489 $ 489 $ 489
Series F Preferred Stock Dividend Scenario 1          
Class of Stock [Line Items]          
Dividend rate, percentage       6.95%  
Scenario, Forecast          
Class of Stock [Line Items]          
Preferred Stock, Basis spread on variable rate for transition to SOFR, percentage   0.262%      
Plus 3-month CME Term SOFR | Scenario, Forecast | Series C Preferred Stock Dividend Scenario 2          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage   3.41%      
Plus 5-year Treasury rate | Scenario, Forecast | Series F Preferred Stock Dividend Scenario 2          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage 2.771%        
Depositary Shares | Series C          
Class of Stock [Line Items]          
Preferred stock, liquidation preference per share (in usd per share)     $ 25 $ 25  
Depositary Shares | Series E          
Class of Stock [Line Items]          
Preferred stock, liquidation preference per share (in usd per share)     25 25  
Depositary Shares | Series F Preferred Stock          
Class of Stock [Line Items]          
Preferred stock, liquidation preference per share (in usd per share)     $ 25 $ 25