Fair Value Measurements And Disclosure (Effect Of Derivatives On The Consolidated Statements Of Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) recognized in accumulated OCI			$ (1,857)
Other Comprehensive Income (Loss), Cash Flow Hedge, Reclassification for Discontinuance, before Tax	$ 0	$ 0	(12)	$ 0
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on interest rate swaps	(1)	(1)	(3)	(3)
Gain (Loss) on long-term debt	1	1	3	3
Cross-currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on interest rate swaps	(52)	(34)	7	(66)
Gain (Loss) on long-term debt	52	34	(7)	66
Gain (Loss) recognized in accumulated OCI	12	2	(48)	3
Gain (Loss) recognized in accumulated OCI	(690)	(237)	(1,077)	(742)
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on interest rate swaps	(37)	0	(60)	0
Gain (Loss) on long-term debt	37	0	60	0
Gain (Loss) recognized in accumulated OCI	(5)	0	(9)	0
Gain (Loss) recognized in accumulated OCI	0	(14)	3	(14)
Foreign exchange contracts | Other income (expense) - net
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated OCI into income	0	7	1	(3)
Interest rate locks | Other income (expense) - net
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated OCI into income	0	0	(45)	0
Interest rate locks | Interest income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated OCI into income	$ (15)	$ (22)	$ (51)	$ (70)