Annual report pursuant to Section 13 and 15(d)

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

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Derivative Instruments - Schedule of Level 3 Derivatives Activity (Details) - Liquefaction Supply Derivatives [Member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance, beginning of period $ (29) $ 43 $ 79
Realized and mark-to-market gains (losses):      
Included in cost of sales (77) (13) (37)
Purchases and settlements:      
Purchases 199 (31) 14
Settlements 44 (29) (12)
Transfers out of Level 3 1 [1] 1 [1] (1)
Balance, end of period 138 (29) 43
Change in unrealized losses relating to instruments still held at end of period $ (77) $ (13) $ (37)
[1] Transferred to Level 2 as a result of observable market for the underlying natural gas purchase agreements.