Annual report pursuant to Section 13 and 15(d)

Derivative Instruments - Schedule of Level 3 Derivatives Activity (Details)

v3.8.0.1
Derivative Instruments - Schedule of Level 3 Derivatives Activity (Details) - Physical Liquefaction Supply Derivatives [Member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance, beginning of period $ 79 $ 32 $ 0
Realized and mark-to-market gains (losses):      
Included in cost of sales (37) 48 [1] 32
Purchases and settlements:      
Purchases 14 1 0
Settlements (12) (2) [1] 0
Transfers out of Level 3 (1) 0 0
Balance, end of period 43 79 32
Change in unrealized gains relating to instruments still held at end of period $ (37) 49 $ 32
Decrease in Fair Value Realized and Capitalized During Period   $ 1  
[1] Does not include the decrease in fair value of $1 million related to the realized gains capitalized during the year ended December 31, 2016.