Derivative Financial Instruments (Location And Fair Values Of Derivative Financial Instruments In Our Consolidated Statement Of Financial Position) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative assets fair value	$ 9	$ 69
Derivative liabilities fair value	31	7
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	3	3
Derivative liabilities fair value	0	7
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	3	3
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Accrued Expenses And Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities fair value	0	7
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Derivative assets fair value	6	66
Derivative liabilities fair value	31	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	6	51
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	0	15
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Accrued Expenses And Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities fair value	21	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities fair value	$ 10	$ 0