v3.26.1
Supplementary Information on Oil and Gas Exploration and Production Activities (Unaudited) - Additional Information (Detail)
$ in Thousands, bbl in Millions, MMBbls in Millions, ft³ in Billions
 12 Months Ended
Dec. 31, 2025
MXN ($)
field
ft³
bbl
MMBbls
Dec. 31, 2024
MXN ($)
bbl
ft³
Dec. 31, 2023
MXN ($)
Disclosure - supplementary information on oil and gas exploration and production activities [Abstract]      
Exploration costs for geological and geophysical studies | $ $ 17,368,569 $ 14,672,428 $ 16,589,953
Estimated reserves percentage 76.10%    
Remaining estimated reserve percentage 23.90%    
Percentage of developed and undeveloped reserves (2.60%)    
Developed and undeveloped reserves increase decrease 5,351.9 5,494.5  
Percentage of developed reserves 8.70%    
Developed reserves increase decrease 3,162.1 3,463.9  
Extensions and discoveries 507.4    
Developed and undeveloped reserves added to offset 650.0    
Percentage of developed and undeveloped dry gas reserves increased 8.40%    
Developed and undeveloped dry gas reserves increase decrease | ft³ 11,025.9 10,173.6  
Percentage of developed dry gas reserves increase 22.20%    
Developed dry gas reserves increase decrease | ft³ 7,054.0 5,773.4  
Developed and undeveloped dry gas reserves added to offset | ft³ 901.0    
Percentage of undeveloped dry gas reserves increase 9.70%    
Undeveloped dry gas reserves increase decrease | ft³ 3,971.9 4,400.2  
Number of new crude oil fields discovered | field 2    
Exploratory activity in shallow waters and onshore regions incorporated | MMBbls 12.2    
Increase of proved reserves 844.5    
Reserve-replacement ratio 102.60% 96.60%  
Reserves production ratio of proved reserves, period 9 years 1 month 6 days    
Proved reserves after net cash flows discount factor 10.00% 10.00% 10.00%