Derivative Financial Instruments (Schedule Of Notional Amounts And Fair Values Of Derivative Instruments) (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Derivative, Notional Amount	[1]	$ 5,164	$ 4,481
Other assets		34	52
Accrued liabilities		(138)	(136)
Derivative Asset, Collateral, Obligation to Return Cash, Offset		(20)	(24)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		20	24
Net recorded balance, Other assets		14	28
Net recorded balance, Accrued liabilities		(118)	(112)
Foreign Exchange Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		2,590	3,407
Other assets		29	32
Accrued liabilities		(60)	(132)
Foreign Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		285	414
Other assets		1	11
Accrued liabilities		(6)	(2)
Interest Rate Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount			125
Commodity Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		645	57
Other assets		4	9
Accrued liabilities		(72)	(2)
Commodity Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 1,644	$ 478

[1] 1)  Notional amounts represent the gross contract/notional amount of the derivatives outstanding.