Fair Value Measurements (Details 1) - Nonrecurring Basis $ in Millions	3 Months Ended
Mar. 31, 2018 USD ($)
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	$ 0
Properties, plant and equipment, net (held for sale)	631
Investments and advances	1
Total Assets at Fair Value	632
Properties, plant and equipment, net (held and used), Before-Tax Loss	0
Properties, plant and equipment, net (held for sale), Before-Tax Loss	163
Investments and advances, Before Tax Loss	1
Total Assets at Fair Value, Before-Tax Loss	164
Level 1
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	0
Properties, plant and equipment, net (held for sale)	0
Investments and advances	0
Total Assets at Fair Value	0
Level 2
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	0
Properties, plant and equipment, net (held for sale)	631
Investments and advances	0
Total Assets at Fair Value	631
Level 3
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	0
Properties, plant and equipment, net (held for sale)	0
Investments and advances	1
Total Assets at Fair Value	$ 1

Assets Fair Value Before Tax Loss.

No definition available.

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- Definition

Assets held for sale long lived fair value before tax loss.

+ References

No definition available.

+ Details

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- Definition

Fair value assets and liabilities measured on non recurring basis.

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No definition available.

+ Details

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- Definition

Fair value investments and advances before tax loss.

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No definition available.

+ Details

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- Definition

Property plant and equipment fair value before tax loss.

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No definition available.

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- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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No definition available.

+ Details

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- Definition

Fair value portion of assets classified as held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258

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- Definition

Fair value portion of investments in an entity not consolidated. Includes, but is not limited to, investments in an entity that is affiliated with the reporting entity by means of direct or indirect ownership, an entity in which the reporting entity shares control of the entity with another party or group, an entity which the company has significant influence, but does not have control and subsidiaries that are not required to be consolidated and are accounted for using the equity or cost method.

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- Definition

Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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+ Details

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