Derivative Financial Instruments (Notional Value Of Outstanding Cash Flow Hedge Contracts By Year Of Maturity And Net Unrealized (Loss) Gain Included In Accumulated Other Comprehensive Income) (Details) - Designated as Hedging Instrument [Member] - Cash Flow Hedging [Member] - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Foreign Exchange Contract
Derivative [Line Items]
Derivative, Notional Amount	$ 2,813	$ 2,523
Foreign Exchange Contract, Maturity 2022
Derivative [Line Items]
Derivative, Notional Amount	1,038	1,643
Foreign Exchange Contract, Maturity 2023
Derivative [Line Items]
Derivative, Notional Amount	1,380	880
Foreign Exchange Contract, Maturity 2024
Derivative [Line Items]
Derivative, Notional Amount	395	0
Foreign Exchange Option [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 8	$ 78