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Divestitures - Sale of Noncontrolling Interest in ELC (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Property, Plant and Equipment [Line Items] |  |  |  |
Contributions from investment partner |  | $ 148 | $ 181 | $ 485
Sale of Equity Interest in Elba Liquification Company LLC |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Contributions from investment partner | $ 386 |  |  |
Elba Liquefaction Company [Member] | Sale of Equity Interest in Elba Liquification Company LLC |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Ownership percentage by noncontrolling owners | 49.00% |  |  |
Ownership percentage | 51.00% |  |  |

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