The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of income (loss) from continuing operations reported by an equity method investee.

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The amount of net income (loss) reported by an equity method investment of the entity.

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The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.

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Equity Method Investments and Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 788		$ 788		$ 847
Equity Method Investment, Summarized Financial Information [Abstract]
Revenues and other income	228	$ 199	426	$ 438
Income from operations	143	113	240	265
Net income	$ 123	$ 101	$ 202	$ 235
EG Holdings [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	60.00%		60.00%
Equity Method Investments	$ 414		$ 414		456
Alba Plant LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	52.00%		52.00%
Equity Method Investments	$ 189		$ 189		214
AMPCO [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	45.00%		45.00%
Equity Method Investments	$ 185		$ 185		$ 177