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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Amount of revenue from sale of product and rendering of service reported by equity method investee.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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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.

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No definition available.

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Equity Method Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Equity Method Investments (Details) - USD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 667		$ 667		$ 745
Income data:
Revenues and other income	184	$ 238	637	$ 664
Income from operations	61	151	192	391
Net income	$ 45	$ 129	$ 140	$ 331
EGHoldings
Schedule of Equity Method Investments [Line Items]
Ownership percentage	60.00%		60.00%
Equity method investments	$ 324		$ 324		402
Alba Plant LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	52.00%		52.00%
Equity method investments	$ 158		$ 158		167
AMPCO
Schedule of Equity Method Investments [Line Items]
Ownership percentage	45.00%		45.00%
Equity method investments	$ 185		$ 185		$ 176