Commitments and Contingencies (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jan. 31, 2020
Loss Contingencies [Line Items]
Guarantees recorded	$ 4,000
Contingent royalty liability	103,000
Contingent capital and expense receivable, noncurrent	23,000
Estimated minimum monetary sanctions for Clean Air Act enforcement action		$ 100
Performance of Equatorial Guinea LNG Operations, S.A.
Loss Contingencies [Line Items]
Guarantor obligations, maximum exposure	91,000
Performance of Alba Plant LLC.
Loss Contingencies [Line Items]
Guarantor obligations, maximum exposure	$ 25,000