Derivatives and Hedging Instruments - Derivative Fair Values (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	$ 4	$ 1
Derivative Liabilities, Fair Value	1	2
Foreign Exchange Derivative [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	1
Derivatives designated as hedging instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	3	0
Derivative Liabilities, Fair Value	0	1
Derivatives designated as hedging instrument [Member] \| Foreign Exchange Derivative [Member] \| Other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	80	104
Derivative Assets, Fair Value	3	0
Derivatives designated as hedging instrument [Member] \| Foreign Exchange Derivative [Member] \| Other current liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	0	142
Derivative Liabilities, Fair Value	0	1
Derivatives not designated as hedging instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	1	1
Derivative Liabilities, Fair Value	1	1
Derivatives not designated as hedging instrument [Member] \| Foreign Exchange Derivative [Member] \| Other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	164	101
Derivative Assets, Fair Value	1	1
Derivatives not designated as hedging instrument [Member] \| Foreign Exchange Derivative [Member] \| Other current liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	227	292
Derivative Liabilities, Fair Value	$ 1	$ 1

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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- Definition

Nominal or face amount used to calculate payments on the derivative asset.

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- Definition

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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- Definition

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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- Definition

Nominal or face amount used to calculate payments on the derivative liability.

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- Definition

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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No definition available.

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