Derivative and Other Financial Instruments - Fair Value Hedge Carrying Amounts (Details) - Derivatives in fair value hedges - Designated as Hedging Instrument - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Cumulative amount of fair value hedging adjustment included in the carrying about of the hedged assets	$ 1	$ 1
Cash and cash equivalents
Derivative [Line Items]
Carrying amount of hedged assets	9	1
Receivables, net
Derivative [Line Items]
Carrying amount of hedged assets	11	15
Accrued liabilities
Derivative [Line Items]
Carrying amount of hedged liabilities	$ (9)	$ (12)

Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

No definition available.

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- Definition

Aggregate fair value of all derivative liabilities designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

+ References

No definition available.

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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.

+ References

No definition available.

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- Definition

Amount of cumulative increase (decrease) in fair value of hedged asset in fair value hedge, attributable to hedged risk.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4EE
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109999712-113959

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