Quarterly report pursuant to Section 13 or 15(d)

SHAREOWNERS' EQUITY - Roll-forward of Common Stock, Additional Paid-in Capital, Retained Earnings Accounts and Noncontrolling Interest (Details)

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SHAREOWNERS' EQUITY - Roll-forward of Common Stock, Additional Paid-in Capital, Retained Earnings Accounts and Noncontrolling Interest (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Stockholders Equity Note [Roll Forward]        
Balance at beginning of period     $ 17,314.0  
Common stock purchases (in shares) (3.9) (4.4) (3.9) (12.8)
Common stock, repurchased, value $ (500.0) $ (750.0) $ (500.0) $ (2,300.0)
Net income attributable to common shareowners 1,539.0 $ 1,127.0 4,061.0 $ 5,103.0
Balance at end of period $ 16,884.0   $ 16,884.0  
Common stock, cash paid for dividends (in dollars per share) $ 1.63 $ 1.62 $ 4.89 $ 4.86
Dividends, common stock $ 88.0 $ 43.0 $ 154.0 $ 196.0
Class A common stock        
Stockholders Equity Note [Roll Forward]        
Balance at beginning of period (in shares)     127.0  
Balance at end of period (in shares) 122.0   122.0  
Class B common stock        
Stockholders Equity Note [Roll Forward]        
Balance at beginning of period (in shares)     726.0  
Balance at end of period (in shares) 731.0   731.0  
Common Stock | Class A common stock        
Stockholders Equity Note [Roll Forward]        
Balance at beginning of period (in shares) 125.0 132.0 127.0 134.0
Balance at beginning of period $ 2.0 $ 2.0 $ 2.0 $ 2.0
Stock award plans (in shares) 0.0 1.0 2.0 4.0
Stock award plans     $ 0.0 $ 0.0
Stock award plans $ 0.0 $ 0.0    
Common stock issuances (in shares) 0.0 1.0 2.0 2.0
Common stock issuances $ 0.0 $ 0.0 $ 0.0 $ 0.0
Conversions of Class A to Class B common stock (in shares) (3.0) (4.0) (9.0) (10.0)
Conversions of class A to class B common stock $ 0.0 $ 0.0 $ 0.0 $ 0.0
Balance at end of period (in shares) 122.0 130.0 122.0 130.0
Balance at end of period $ 2.0 $ 2.0 $ 2.0 $ 2.0
Common Stock | Class B common stock        
Stockholders Equity Note [Roll Forward]        
Balance at beginning of period (in shares) 732.0 723.0 726.0 725.0
Balance at beginning of period $ 7.0 $ 7.0 $ 7.0 $ 7.0
Common stock purchases (in shares) (4.0) (5.0) (4.0) (13.0)
Common stock, repurchased, value $ 0.0 $ 0.0 $ 0.0 $ 0.0
Conversions of Class A to Class B common stock (in shares) 3.0 4.0 9.0 10.0
Conversions of class A to class B common stock $ 0.0 $ 0.0 $ 0.0 $ 0.0
Balance at end of period (in shares) 731.0 722.0 731.0 722.0
Balance at end of period $ 7.0 $ 7.0 $ 7.0 $ 7.0
Additional Paid-In Capital        
Stockholders Equity Note [Roll Forward]        
Balance at beginning of period 136.0 0.0 0.0 0.0
Stock award plans (20.0) 14.0 (123.0) 391.0
Common stock issuances 96.0 115.0 335.0 370.0
Common stock, repurchased, value (212.0) (123.0) (212.0) (750.0)
Other 0.0 (6.0) 0.0 (11.0)
Balance at end of period 0.0 0.0 0.0 0.0
Retained Earnings        
Stockholders Equity Note [Roll Forward]        
Balance at beginning of period 20,692.0 21,584.0 21,055.0 21,326.0
Common stock, repurchased, value (288.0) (627.0) (288.0) (1,500.0)
Net income attributable to common shareowners 1,539.0 1,127.0 4,061.0 5,103.0
Dividends (1,391.0) (1,384.0) (4,203.0) (4,230.0)
Other 0.0 (1.0) (73.0) 0.0
Balance at end of period 20,552.0 20,699.0 20,552.0 20,699.0
Noncontrolling Interests        
Stockholders Equity Note [Roll Forward]        
Balance at beginning of period 23.0 18.0 8.0 17.0
Change in noncontrolling interest 4.0 (6.0) 19.0 (5.0)
Balance at end of period $ 27.0 $ 12.0 $ 27.0 $ 12.0