v3.25.4
Stockholders' and Mezzanine Equity (Narrative) (Details)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2025
USD ($)
$ / shares
shares
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
$ / shares
Jan. 27, 2026
USD ($)
Dec. 31, 2025
€ / shares
shares
Mar. 03, 2025
USD ($)
Class of Stock [Line Items]                  
Common stock, authorized (in shares) | shares 14,000,000,000   14,000,000,000 14,000,000,000 14,000,000,000     14,000,000,000  
Preferred stock, authorized (in shares) | shares 10,000,000   10,000,000 10,000,000 10,000,000     10,000,000  
Common stock, par value (in dollars per share) | $ / shares $ 1.00   $ 1 $ 1.00 $ 1        
Preferred stock, par value (in dollars per share) | $ / shares $ 1   $ 1 $ 1 1        
Period post issuance date that preferred shares are optionally redeemable at liquidation price       5 years          
Equity, Class of Treasury Stock [Line Items]                  
Preferred stock, quarterly dividend declared | $ $ 36   $ 36            
Common stock, quarterly dividend declared per common shares (in dollars per share) | $ / shares $ 0.2775   $ 0.2775 $ 1.11 $ 1.11 $ 1.11      
Stock Repurchase Program, March 2014                  
Equity, Class of Treasury Stock [Line Items]                  
Repurchase of common stock (in shares) | shares         36,000        
Amount repurchased | $         $ 1        
Stock Repurchase Program December 2024                  
Equity, Class of Treasury Stock [Line Items]                  
Share Repurchase Program, Authorized, Amount | $     $ 10,000   $ 10,000        
Repurchase of common stock (in shares) | shares       159,000,000          
Amount repurchased | $       $ 4,269          
Stock Repurchase Program January 2026 | Subsequent Event                  
Equity, Class of Treasury Stock [Line Items]                  
Share Repurchase Program, Authorized, Amount | $             $ 10,000    
Preferred Stock – Series A                  
Class of Stock [Line Items]                  
Preferred stock, outstanding (in shares) | shares 48,000   48,000 48,000 48,000     48,000  
Preferred stock, liquidation preference per share (in dollars/Euros per share) | $ / shares $ 25,000     $ 25,000          
Preferred stock, dividend rate       5.00%          
Preferred Stock – Series B                  
Class of Stock [Line Items]                  
Preferred stock, outstanding (in shares) | shares 0   20,000 0 20,000     0  
Preferred stock, liquidation preference per share (in dollars/Euros per share) | € / shares               € 100,000  
Preferred Stock, Liquidation Preference, Value | $                 $ 2,000
Payments for Repurchase of Redeemable Preferred Stock | $   $ 2,075              
Preferred stock, dividend rate       2.875%          
Preferred Stock – Series C                  
Class of Stock [Line Items]                  
Preferred stock, outstanding (in shares) | shares 70,000   70,000 70,000 70,000     70,000  
Preferred stock, liquidation preference per share (in dollars/Euros per share) | $ / shares $ 25,000     $ 25,000          
Preferred stock, dividend rate       4.75%