Quarterly report [Sections 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 Thousands, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Stockholders Equity Note [Roll Forward]    
Balance at beginning of period $ 16,743.0  
Common stock purchases (in shares) (8,600) 0
Common stock purchases $ (1,000.0)  
Net income attributable to common shareowners 1,187.0 $ 1,113.0
Balance at end of period $ 15,684.0  
Common stock, cash paid for dividends (in dollars per share) $ 1.64 $ 1.63
Dividends, common stock $ 44.0 $ 66.0
Class A common stock    
Stockholders Equity Note [Roll Forward]    
Balance at beginning of period (in shares) 121,000  
Balance at end of period (in shares) 114,000  
Class B common stock    
Stockholders Equity Note [Roll Forward]    
Balance at beginning of period (in shares) 733,000  
Balance at end of period (in shares) 733,000  
Common Stock | Class A common stock    
Stockholders Equity Note [Roll Forward]    
Balance at beginning of period (in shares) 121,000 127,000
Balance at beginning of period $ 2.0 $ 2.0
Stock award plans (in shares) 0 2,000
Stock award plans $ 0.0 $ 0.0
Common stock issuances (in shares) 1,000 0
Common stock issuances $ 0.0 $ 0.0
Conversions of Class A to Class B common stock (in shares) (8,000) (3,000)
Conversions of class A to class B common stock $ 0.0 $ 0.0
Balance at end of period (in shares) 114,000 126,000
Balance at end of period $ 2.0 $ 2.0
Common Stock | Class B common stock    
Stockholders Equity Note [Roll Forward]    
Balance at beginning of period (in shares) 733,000 726,000
Balance at beginning of period $ 7.0 $ 7.0
Common stock purchases (in shares) (8,000) 0
Common stock purchases $ 0.0 $ 0.0
Conversions of Class A to Class B common stock (in shares) 8,000 3,000
Conversions of class A to class B common stock $ 0.0 $ 0.0
Balance at end of period (in shares) 733,000 729,000
Balance at end of period $ 7.0 $ 7.0
Additional Paid-In Capital    
Stockholders Equity Note [Roll Forward]    
Balance at beginning of period 136.0 0.0
Common stock issuances 96.0 118.0
Common stock purchases (262.0) 0.0
Stock award plans 39.0 (118.0)
Other (9.0) 0.0
Balance at end of period 0.0 0.0
Retained Earnings    
Stockholders Equity Note [Roll Forward]    
Balance at beginning of period 20,882.0 21,055.0
Other 0.0 (73.0)
Net income attributable to common shareowners 1,187.0 1,113.0
Dividends (1,392.0) (1,414.0)
Change in non-controlling interest (738.0) 0.0
Balance at end of period 19,939.0 20,681.0
Noncontrolling Interests    
Stockholders Equity Note [Roll Forward]    
Balance at beginning of period 25.0 8.0
Change in non-controlling interest (1.0) 16.0
Balance at end of period $ 24.0 $ 24.0