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Derivative and Other Financial Instruments - Notional Values of Outstanding Derivative Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Foreign exchange | Derivatives not designated as hedges
Derivatives, Fair Value [Line Items]
Notional amount of derivative	$ 586	$ 575
Foreign exchange | Derivatives in cash flow hedges
Derivatives, Fair Value [Line Items]
Notional amount of derivative	839	864
Foreign exchange | Derivatives in fair value hedges
Derivatives, Fair Value [Line Items]
Notional amount of derivative	70	60
Commodities | Derivatives not designated as hedges
Derivatives, Fair Value [Line Items]
Notional amount of derivative	0	40
Commodities | Derivatives in cash flow hedges
Derivatives, Fair Value [Line Items]
Notional amount of derivative	$ 335	$ 276

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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X

- 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.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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