Derivative Instruments - Derivative Net Presentation on Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Interest Rate Derivative Liability [Member]
Derivative [Line Items]
Derivative Liability, Gross Amounts Recognized		$ (6)
Derivative Liability, Gross Amounts Offset in the Balance Sheets		0
Net Amounts Presented in our Balance Sheets		(6)
Liquefaction Supply Derivatives Asset [Member]
Derivative [Line Items]
Derivative Asset, Gross Amounts Recognized	$ 35	82
Derivative Asset, Gross Amounts Offset in the Balance Sheets	(1)	(2)
Net Amounts Presented in our Balance Sheets	34	80
Liquefaction Supply Derivatives Liability [Member]
Derivative [Line Items]
Derivative Liability, Gross Amounts Recognized	(8)	(11)
Derivative Liability, Gross Amounts Offset in the Balance Sheets	2	4
Net Amounts Presented in our Balance Sheets	$ (6)	$ (7)