Inventory (Details) - USD ($) $ in Millions  | 
Sep. 30, 2019  | 
Dec. 31, 2018  | 
|---|---|---|
| Inventory [Line Items] | ||
| Inventory | $ 288 | $ 316 | 
| Natural gas [Member] | ||
| Inventory [Line Items] | ||
| Inventory | 20 | 30 | 
| LNG [Member] | ||
| Inventory [Line Items] | ||
| Inventory | 51 | 24 | 
| LNG in-transit [Member] | ||
| Inventory [Line Items] | ||
| Inventory | 83 | 173 | 
| Materials and other [Member] | ||
| Inventory [Line Items] | ||
| Inventory | $ 134 | $ 89 | 
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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 after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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