v3.20.4

Fair Value Measurements And Disclosure (Effect Of Derivatives On The Consolidated Statements Of Income) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Interest rate swaps |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (Loss) on interest rate swaps | $ (6) | $ 58 | $ (12)
Gain (Loss) on long-term debt | 6 | (58) | 12
Cross-currency swaps |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (Loss) recognized in accumulated OCI | (378) | (1,066) | (825)
Foreign exchange contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (Loss) recognized in accumulated OCI | 3 | 10 | 51
Foreign exchange contracts | Other income (expense) - net |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount reclassified from accumulated OCI into income | (3) | 6 | 39
Interest rate locks |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (Loss) recognized in accumulated OCI | (648) | (84) | 0
Interest rate locks | Interest income (expense) |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount reclassified from accumulated OCI into income | $ (84) | $ (63) | $ (58)

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