v3.26.1
Basis of preparation and material accounting policies - Summary of equity interest in subsidiaries (Detail)
 12 Months Ended
Apr. 15, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Vista Energy Holding I, S.A. de C.V. ("Vista Holding I") [Member]        
Disclosure of subsidiaries [line items]        
Proportion of ownership interest by the Group   100.00%    
Place of incorporation and operation   Mexico    
Main activity   Holding company    
Vista Energy Holding II, S.A. de C.V. ("Vista Holding II") [Member]        
Disclosure of subsidiaries [line items]        
Proportion of ownership interest by the Group   100.00%    
Place of incorporation and operation   Mexico    
Main activity [1]   Exploration and production    
Vista Argentina [Member]        
Disclosure of subsidiaries [line items]        
Proportion of ownership interest by the Group [2]   100.00%    
Place of incorporation and operation [2]   Argentina    
Main activity [1],[2]   Exploration and production    
Aleph Midstream S.A. ("Aleph") [Member]        
Disclosure of subsidiaries [line items]        
Proportion of ownership interest by the Group [2]   0.00% 100.00% 100.00%
Place of incorporation and operation [2]   Argentina    
Main activity [2],[3]   Services    
Aluvional S.A. ("Aluvional") [Member]        
Disclosure of subsidiaries [line items]        
Proportion of ownership interest by the Group [2]   100.00%    
Place of incorporation and operation [2]   Argentina    
Main activity [2]   Mining and industry    
AFBN S.R.L. ("AFBN") [Member]        
Disclosure of subsidiaries [line items]        
Proportion of ownership interest by the Group [2]   0.00% 100.00% 100.00%
Place of incorporation and operation [2]   Argentina    
Main activity [1],[2]   Exploration and production    
VX Ventures Asociacin en Participacin VX Ventures AenP [Member]        
Disclosure of subsidiaries [line items]        
Proportion of ownership interest by the Group   100.00% 100.00% 100.00%
Place of incorporation and operation   Mexico    
Main activity   Holding company    
Vista Energy International SA VEISA [Member]        
Disclosure of subsidiaries [line items]        
Proportion of ownership interest by the Group   100.00% 0.00% 0.00%
Place of incorporation and operation   Uruguay    
Main activity   Trader    
Vista Lach [Member]        
Disclosure of subsidiaries [line items]        
Proportion of ownership interest by the Group 50.00% 100.00% [4] 0.00% [4] 0.00% [4]
Place of incorporation and operation [4]   Argentina    
Main activity [1],[4]   Exploration and production    
[1] Its refers to the exploration and production of Natural gas and Crude oil.
[2] Since January 1, 2025 Aleph and AFBN were merged with Vista Argentina.
[3] Including operations related to the capture, treatment, transport and distribution of hydrocarbons and derivatives.
[4] See Note 1.2.2 and 32.