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Stock Based Compensation Plans (Nonvested Performance Share Unit Awards and Restricted Share Unit Awards - Rollforward) (Details) - $ / shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Weighted-average grant date fair value, vested/released (in dollars per share) $ 141.75 $ 154.91 $ 198.28
Nonvested Performance Units      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Outstanding, beginning balance (in shares) 646,000    
Granted (in shares) 189,000    
Vested/Released (in shares) (199,000)    
Forfeitures (in shares)    
Outstanding, ending balance (in shares) 636,000 646,000  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Weighted-average grant date fair value, beginning of period (in dollars per share) $ 165.48    
Weighted-average grant date fair value, granted (in dollars per share) 144.23    
Weighted-average grant date fair value, vested/released (in dollars per share) 149.12    
Weighted-average grant date fair value, forfeitures (in dollars per share)    
Weighted-average grant date fair value, end of period (in dollars per share) $ 164.29 $ 165.48  
Nonvested Restricted Share / Restricted Share Units      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Outstanding, beginning balance (in shares) 3,762,000    
Granted (in shares) 1,941,000    
Vested/Released (in shares) (1,228,000)    
Forfeitures (in shares) (119,000)    
Outstanding, ending balance (in shares) 4,356,000 3,762,000  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Weighted-average grant date fair value, beginning of period (in dollars per share) $ 169.79    
Weighted-average grant date fair value, granted (in dollars per share) 141.50    
Weighted-average grant date fair value, vested/released (in dollars per share) 163.14    
Weighted-average grant date fair value, forfeitures (in dollars per share) 159.28    
Weighted-average grant date fair value, end of period (in dollars per share) $ 159.34 $ 169.79  
Nonvested Performance Units with Market Conditions      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Outstanding, ending balance (in shares) 170,000