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Contractual Commitments - Agreement for Settlement - Additional information (Detail) $ in Millions	Oct. 19, 2020 USD ($)
Exmar energy netherlands BV exmar argentina SAU and exmar NV [member]
Disclosure of Contractual Commitments [Line Items]
Agreement Termination Settlemnt Amount	$ 150
Down Payment Amount	22
YPF S.A. [member]
Disclosure of Contractual Commitments [Line Items]
Loss from Settlement Agreement	$ 105
Other Liability \| Exmar energy netherlands BV exmar argentina SAU and exmar NV [member]
Disclosure of Contractual Commitments [Line Items]
Amount Payable in Monthly Installment Period	18 months