Accrued Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Accrued Liabilities, Current [Abstract]
Interest costs and related debt fees	$ 236	$ 245
Accrued natural gas purchases	559	576
LNG terminals and related pipeline costs	169	147
Compensation and benefits	69	123
Accrued LNG inventory	49	4
Other accrued liabilities	115	80
Total accrued liabilities	$ 1,197	$ 1,175