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

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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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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Aggregate impact of foreign currency derivatives on earnings for the period. Includes impact of foreign currency cash flow hedge ineffectiveness and the ineffectiveness of fair value hedging derivatives and full change in fair value of the foreign currency derivatives not designated as hedging instruments.

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Derivatives (Details) - USD ($) $ in Millions	3 Months Ended
Derivatives (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Derivative [Line Items]
Debt Instrument, Fair Value Disclosure	$ 388		$ 401
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	1
Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount	125		119
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(3)	$ 1
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	1	1
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		(2)
Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	150
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	150
Not Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	0	0
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	0	0
Designated as Hedging Instrument [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount	109
Designated as Hedging Instrument [Member] \| Derivative Financial Instruments, Assets [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	1
Designated as Hedging Instrument [Member] \| Liability [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	(2)
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	1	2
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		2
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	1	0
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	0	0
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	0	0
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	1
Derivative Liability	3		1
Designated as Hedging Instrument [Member] \| Net Investment Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(6)	(1)
Derivative, Fair Value, Net	(30)		$ (23)
Sales [Member] \| Not Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	0	0
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	1
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	0	0
Sales [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	1
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	0	0
Cost of Sales [Member] \| Not Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net		1
Cost of Sales [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	0	0
Cost of Sales [Member] \| Designated as Hedging Instrument [Member] \| Net Investment Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	$ 0	$ 0