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Divestitures and Acquisition Sale of Noncontrolling Interest in ELC (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 28, 2017
Property, Plant and Equipment [Line Items]
Contributions from investment partner	$ 181	$ 485	$ 0
Sale of Equity Interest in Elba Liquification Company LLC [Member]
Property, Plant and Equipment [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				49.00%
Controlling Interest, Ownership Percentage by Parent				51.00%
Contributions from investment partner	$ 386

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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- Definition

The cash inflow from the capital received in cash from a partner in a partnership during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

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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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