Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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-Section 13
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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Date the derivative contract matures, in CCYY-MM-DD format.

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Amount of gain recognized in earnings when a hedged firm commitment no longer qualifies as a fair value hedge.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

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Objectives And Strategies For Using Derivatives (Narratives) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Derivative Instruments, Gain (Loss)
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	$ 12
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss)
Gain (loss) on undesignated foreign exchange hedging instruments	(8)	$ (3)
Foreign currency exchange contracts \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss)
Aggregate notional values of outstanding derivatives	1,700
Net Investment Hedging
Derivative Instruments, Gain (Loss)
Aggregate notional values of outstanding derivatives	1,100
Fair Value Hedging
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in earnings as a result of hedge not qualifying as a fair value hedge		$ 0
Fair Value Hedging \| Interest Rate Contract
Derivative Instruments, Gain (Loss)
Aggregate notional values of outstanding derivatives	300
Long-term Debt, Fair Value	$ 299
Cash Flow Hedging
Derivative Instruments, Gain (Loss)
Maximum Maturity Date	Mar. 31, 2021
Cash Flow Hedging \| Foreign currency exchange contracts
Derivative Instruments, Gain (Loss)
Aggregate notional values of outstanding derivatives	$ 625
Cash Flow Hedging \| Interest Rate Contract
Derivative Instruments, Gain (Loss)
Aggregate notional values of outstanding derivatives	100
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Derivative Instruments, Gain (Loss)
Derivative Asset	29		$ 30
Derivative Liability	$ 29		$ 18