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Objectives And Strategies For Using Derivatives (Narratives) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Derivative Instruments, Gain (Loss)
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	$ 9
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss)
Gain (loss) on undesignated foreign exchange hedging instruments	34	$ 9
Foreign currency exchange contracts \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss)
Derivative, Notional Amount	2,200
Fair Value Hedging \| Interest Rate Contract
Derivative Instruments, Gain (Loss)
Long-term Debt, Fair Value	501
Derivative, Notional Amount	525
Cash Flow Hedging \| Foreign currency exchange contracts
Derivative Instruments, Gain (Loss)
Derivative, Notional Amount	781
Net Investment Hedging
Derivative Instruments, Gain (Loss)
Derivative, Notional Amount	1,400
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Derivative Instruments, Gain (Loss)
Derivative Asset	57		$ 65
Derivative Liability	$ 85		$ 41