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Consolidated Statements of Changes in Common Shareholders' Equity - USD ($)
$ in Millions
Total
Common Shares
Treasury Shares
Paid-in- Surplus
Retained Earnings
AOCI
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Beginning balance (in shares)     (473,600,000)      
Beginning balance (in shares) at Dec. 31, 2021   1,112,400,000        
Beginning balance at Dec. 31, 2021 $ 14,161 $ 2,781 $ (47,734) $ 4,979 $ 55,049 $ (914)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 6,998       6,998  
Other comprehensive income/(loss) 332 [1]         332
Conversion, stock option exercises, forfeitures, ESPP, and other (in shares)   200,000 500,000      
Conversion, stock option exercises, forfeitures, ESPP, and other 114 $ 1   113    
Share repurchase programs (Note 18) (in shares)     (27,100,000)      
Share repurchase programs (Note 18) (6,282)   $ (6,270) (12)    
Cash dividends declared (3,160)       (3,160)  
Ending balance (in shares) at Dec. 31, 2022   1,112,600,000        
Ending balance (in shares) at Dec. 31, 2022     (500,200,000)      
Ending balance at Dec. 31, 2022 12,163 $ 2,782 $ (54,004) 5,080 58,887 (582)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Beginning balance (in shares)     (500,200,000)      
Net income 6,379       6,379  
Other comprehensive income/(loss) (32) [1]         (32)
Conversion, stock option exercises, forfeitures, ESPP, and other (in shares)   300,000 500,000      
Conversion, stock option exercises, forfeitures, ESPP, and other $ 163   $ 50 113    
Share repurchase programs (Note 18) (in shares) (3,515,284)   (3,500,000)      
Share repurchase programs (Note 18) $ (712)   $ (712)      
Cash dividends declared $ (3,173)       (3,173)  
Ending balance (in shares) at Dec. 31, 2023 609,703,814 1,112,900,000        
Ending balance (in shares) at Dec. 31, 2023     (503,200,000)      
Ending balance at Dec. 31, 2023 $ 14,788 $ 2,782 $ (54,666) 5,193 62,093 (614)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Beginning balance (in shares)     (503,200,000)      
Net income 6,747       6,747  
Other comprehensive income/(loss) (109) [1]         (109)
Conversion, stock option exercises, forfeitures, ESPP, and other (in shares)   100,000 700,000      
Conversion, stock option exercises, forfeitures, ESPP, and other $ 191 $ 1 $ 49 141    
Share repurchase programs (Note 18) (in shares) (6,303,166)   (6,300,000)      
Share repurchase programs (Note 18) $ (1,515)   $ (1,515)      
Cash dividends declared $ (3,212)       (3,212)  
Ending balance (in shares) at Dec. 31, 2024 604,241,260 1,113,000,000        
Ending balance (in shares) at Dec. 31, 2024     (508,800,000)      
Ending balance at Dec. 31, 2024 $ 16,890 $ 2,783 $ (56,132) $ 5,334 $ 65,628 $ (723)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Beginning balance (in shares)     (508,800,000)      
[1] Net of deferred taxes of $6 million, $31 million, and ($92) million during 2024, 2023, and 2022, respectively.