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Commitments and Contingencies - Narrative (Details)

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Commitments and Contingencies - Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2017
USD ($)
tbtu
item
Dec. 31, 2016
tbtu
Commitments and Contingencies [Line Items]    
Amount of Restricted Net Assets for Consolidated Subsidiaries $ 2,100  
Loss Contingency, Pending Claims, Number | item 0  
SPL [Member]    
Commitments and Contingencies [Line Items]    
Energy Units Secured Through Natural Gas Supply Contracts | tbtu 2,214 1,994
EPC Contract, Train 5 [Member] | SPL [Member]    
Commitments and Contingencies [Line Items]    
Long-term Purchase Commitment, Amount $ 3,100  
EPC Contract, Train 5 [Member] | SPL [Member] | Maximum [Member]    
Commitments and Contingencies [Line Items]    
Contract Termination Convenience Penalty $ 30  
Natural Gas Supply Agreement [Member] | Minimum [Member]    
Commitments and Contingencies [Line Items]    
Long-term Purchase Commitment, Period 1 year  
Natural Gas Supply Agreement [Member] | Maximum [Member]    
Commitments and Contingencies [Line Items]    
Long-term Purchase Commitment, Period 6 years  
Transportation Agreement [Member] | Minimum [Member]    
Commitments and Contingencies [Line Items]    
Long-term Purchase Commitment, Period 1 year  
Transportation Agreement [Member] | Maximum [Member]    
Commitments and Contingencies [Line Items]    
Long-term Purchase Commitment, Period 20 years  
Storage Service Agreement [Member] | SPL [Member] | Minimum [Member]    
Commitments and Contingencies [Line Items]    
Long-term Purchase Commitment, Period 3 years  
Storage Service Agreement [Member] | SPL [Member] | Maximum [Member]    
Commitments and Contingencies [Line Items]    
Long-term Purchase Commitment, Period 10 years