Commitments and Contingencies (Details)	Mar. 31, 2020 USD ($)
Loss Contingencies [Line Items]
Contingent Royalty Liability	$ 99,000,000
Contingent Capital And Expense Receivable, Noncurrent	24,000,000
Estimated Minimum Monetary Sanctions For Clean Air Act Enforcement Action	100,000
Performance of Equatorial Guinea LNG Operations, S.A. [Member]
Loss Contingencies [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	91,000,000
Performance of Alba Plant LLC. [Member]
Loss Contingencies [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 25,000,000