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Objectives And Strategies For Using Derivatives (Narratives) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Derivative Instruments, Gain (Loss)      
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax $ 20 $ (27)  
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months 24    
Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss)      
Gain (loss) on undesignated foreign exchange hedging instruments 24 $ (23)  
Foreign currency exchange contracts | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss)      
Derivative, Notional Amount 3,400    
Fair Value Hedging | Interest Rate Contract      
Derivative Instruments, Gain (Loss)      
Long-term Debt, Fair Value 492    
Derivative, Notional Amount 525    
Cash Flow Hedging | Foreign currency exchange contracts      
Derivative Instruments, Gain (Loss)      
Derivative, Notional Amount 3,200    
Net Investment Hedging      
Derivative Instruments, Gain (Loss)      
Derivative, Notional Amount 1,700    
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2      
Derivative Instruments, Gain (Loss)      
Derivative Asset 166   $ 189
Derivative Liability $ 109   $ 137