Trade and Other Receivables - Additional information (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Trade And Other Receivables [Line Items]
Set Off of trade receivables	$ 70	$ 41

Utilisation, allowance for credit losses of financial assets.

No definition available.

Name:	vist_UtilisationAllowanceForCreditLossesOfFinancialAssets
Namespace Prefix:	vist_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration