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Objectives And Strategies For Using Derivatives (Narratives) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Derivative Instruments, Gain (Loss)      
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax $ 11    
Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss)      
Gain (loss) on undesignated foreign exchange hedging instruments (8) $ 34  
Foreign currency exchange contracts | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss)      
Derivative, Notional Amount 2,300    
Fair Value Hedging | Interest Rate Contract      
Derivative Instruments, Gain (Loss)      
Long-term Debt, Fair Value 478    
Derivative, Notional Amount 525    
Cash Flow Hedging | Foreign currency exchange contracts      
Derivative Instruments, Gain (Loss)      
Derivative, Notional Amount 2,600    
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 88   $ 99
Derivative Liability $ 368   $ 318