v3.25.2
Total Equity and Other Comprehensive Income (Rollforward of Total Equity) (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Equity, beginning balance $ 56,451.0 $ 51,374.0 $ 54,469.0 $ 51,141.0        
Net income 1,643.0 1,477.0 3,142.0 2,821.0        
Other comprehensive income (loss), net of tax 555.0 596.0 1,883.0 266.0        
Cash dividends declared - Common (642.0) (623.0) (1,281.0) (1,247.0)        
Cash dividends declared - Preferred (83.0) (95.0) (154.0) (176.0)        
Preferred stock discount accretion 0.0 0.0 0.0 0.0        
Common stock activity 18.0 16.0 18.0 16.0        
Treasury stock activity (326.0) (93.0) (362.0) (92.0)        
Other 39.0 29.0 (60.0) (48.0)        
Equity, ending balance 57,655.0 52,681.0 57,655.0 52,681.0        
Preferred stock, par value $ 0.5 $ 0.5 $ 0.5 $ 0.5 $ 0.5 $ 0.5 $ 0.5 $ 0.5
Common Stock                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Beginning balance (in shares) 396 398 396 398        
Beginning balance - Treasury (in shares) (2)   (2)          
Equity, beginning balance $ 2,717.0 $ 2,716.0 $ 2,717.0 $ 2,716.0        
Ending balance (in shares) 394 398 394 398        
Equity, ending balance $ 2,717.0 $ 2,716.0 $ 2,717.0 $ 2,716.0        
Capital Surplus - Preferred Stock                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Equity, beginning balance 5,751.0 6,243.0 5,749.0 6,241.0        
Preferred stock discount accretion 2.0 2.0 4.0 4.0        
Equity, ending balance 5,753.0 6,245.0 5,753.0 6,245.0        
Capital Surplus - Common Stock and Other                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Equity, beginning balance 12,980.0 12,789.0 12,961.0 12,779.0        
Common stock activity 18.0 16.0 18.0 16.0        
Treasury stock activity 5.0 6.0 107.0 77.0        
Other 53.0 42.0 (30.0) (19.0)        
Equity, ending balance 13,056.0 12,853.0 13,056.0 12,853.0        
Retained Earnings                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Equity, beginning balance 60,051.0 56,913.0 59,282.0 56,290.0        
Net income 1,627.0 1,459.0 3,108.0 2,789.0        
Cash dividends declared - Common (642.0) (623.0) (1,281.0) (1,247.0)        
Cash dividends declared - Preferred (83.0) (95.0) (154.0) (176.0)        
Preferred stock discount accretion (2.0) (2.0) (4.0) (4.0)        
Equity, ending balance 60,951.0 57,652.0 60,951.0 57,652.0        
Accumulated Other Comprehensive Income (Loss)                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Equity, beginning balance (5,237.0) (8,042.0) (6,565.0) (7,712.0)        
Other comprehensive income (loss), net of tax 555.0 596.0 1,883.0 266.0        
Equity, ending balance (4,682.0) (7,446.0) (4,682.0) (7,446.0)        
Treasury Stock                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Equity, beginning balance (19,857.0) (19,279.0) (19,719.0) (19,209.0)        
Treasury stock activity (331.0) (99.0) (469.0) (169.0)        
Equity, ending balance (20,188.0) (19,378.0) (20,188.0) (19,378.0)        
Noncontrolling Interests                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Equity, beginning balance 46.0 34.0 44.0 36.0        
Net income 16.0 18.0 34.0 32.0        
Other (14.0) (13.0) (30.0) (29.0)        
Equity, ending balance $ 48.0 $ 39.0 $ 48.0 $ 39.0