Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Derivative Instruments - Schedule of Level 3 Derivatives Activity (Details) - Liquefaction Supply Derivatives [Member] - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Balance, beginning of period $ 12 $ 40 $ 43 $ 79
Realized and mark-to-market gains (losses):        
Included in cost of sales 5 (8) (4) (43)
Purchases and settlements:        
Purchases 9 (1) 14 1
Settlements 1 (2) (27) (8)
Transfers out of Level 3 [1] (1) 0 0 0
Balance, end of period 26 29 26 29
Change in unrealized gains relating to instruments still held at end of period $ 5 $ (8) $ (4) $ (43)
[1] Transferred to Level 2 as a result of observable market for the underlying natural gas purchase agreements.