Annual report pursuant to Section 13 and 15(d)

Derivative Instruments - Schedule of Level 3 Activity (Details)

v3.10.0.1
Derivative Instruments - Schedule of Level 3 Activity (Details) - Physical Liquefaction Supply Derivatives [Member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance, beginning of period $ 43 $ 79 $ 32
Realized and mark-to-market gains (losses):      
Included in cost of sales [1] (3) (37) 48
Purchases and settlements:      
Purchases (37) 14 1
Settlements [1] (29) (12) (2)
Transfers out of Level 3 [2] 1 (1) 0
Balance, end of period (25) 43 79
Change in unrealized gains (losses) relating to instruments still held at end of period $ (3) $ (37) 49
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.
[2] Transferred to Level 2 as a result of observable market for the underlying natural gas purchase agreements.