Derivative Instruments - Narrative (Details) $ in Millions  | 
1 Months Ended | ||
|---|---|---|---|
| 
 Mar. 31, 2017  
USD ($) 
 | 
 Mar. 31, 2018  
tbtu 
 | 
 Dec. 31, 2017  
tbtu 
 | 
|
| Liquefaction Supply Derivatives [Member] | |||
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | |||
| Notional amount | tbtu | 1,521 | 1,520 | |
| SPL [Member] | |||
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | |||
| Energy Units Secured Through Natural Gas Supply Contracts | tbtu | 2,179 | 2,214 | |
| SPL [Member] | 2015 SPL Credit Facilities [Member] | |||
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | |||
| Line of Credit Facility, Decrease | $ | $ 1,600 | ||
| SPL [Member] | SPL Interest Rate Derivatives [Member] | |||
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | |||
| Derivative Loss, Net | $ | $ 7 | 
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- Definition Energy Units Secured Through Long-Term Purchase Agreements No definition available. 
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- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 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. No definition available. 
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- Definition Amount of increase (decrease) of the credit facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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