Cash expense related to divestiture of businesses.

No definition available.

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- Definition

Guarantee payments to third party.

+ References

No definition available.

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- Definition

Number of employees.

+ 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 revenue attributable to disposal group, including, but not limited to, discontinued operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

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- Definition

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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-Publisher FASB
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-Section 50
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- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
-Section 45
-Paragraph 12
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-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Details

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Acquisitions and Divestitures (Details) $ in Millions		1 Months Ended	3 Months Ended				6 Months Ended
Acquisitions and Divestitures (Details) $ in Millions	Apr. 02, 2018 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($) employee	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Business Acquisition [Line Items]
Restructuring and other charges			$ 15		$ 26		$ 22	$ 99
Latin America Extrusions (LAE) \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Disposal group, including discontinued operation, revenue					$ 30		$ 25	$ 56
Cash received on sale of operations	$ 5
Latin America Extrusions (LAE) \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Divested Businesses
Business Acquisition [Line Items]
Restructuring and other charges				$ 41
Slim Aluminium
Business Acquisition [Line Items]
Cash expense related to sale of rolling mill		$ 10
Third party guarantee with a fair value related to environmental remediation		$ 5
Disposal group, including discontinued operation, revenue						$ 37
Number of employees \| employee						312
Slim Aluminium \| Restructuring and Other Charges
Business Acquisition [Line Items]
Loss on sale of rolling mill						$ 60