v3.26.1
Revenue - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
USD ($)
$ / uSDPerBbl
Dec. 31, 2025
MXN ($)
$ / uSDPerBbl
Dec. 31, 2024
USD ($)
$ / uSDPerBbl
Dec. 31, 2024
MXN ($)
$ / uSDPerBbl
Dec. 31, 2023
MXN ($)
$ / uSDPerBbl
Dec. 31, 2025
MXN ($)
Disclosure of geographical areas [line items]            
Payment terms 30 days         30 days
Sales price determination period, maximum 2 months         2 months
Customers, net $ 6,233,447,000     $ 126,733,175   $ 111,994,478
Advances from customers       26,494,706   $ 16,048,150
Amount recorded in advance from customers were recognized as revenue for the period   $ 5,351,248   $ 6,199,067    
Price of the Mexican crude oil export mix per barrel (USD per USD per bbl) | $ / uSDPerBbl 53.62 53.62 66.70 66.70 67.65  
Incentive for automotive fuels $ 0 $ 0   $ 0 $ 23,421  
Mexico            
Disclosure of geographical areas [line items]            
Increase decrease in price of the Mexican crude oil export mix per barrel $ (13.08)   $ (0.95)      
Percentage increase decrease in price of the Mexican crude oil export mix per barrel (19.60%) (19.60%) (1.40%) (1.40%)    
Refined petroleum products            
Disclosure of geographical areas [line items]            
Invoice payment terms 30 days         30 days
Gas            
Disclosure of geographical areas [line items]            
Invoice payment terms 30 days         30 days
Services            
Disclosure of geographical areas [line items]            
Invoice payment terms 22 days         22 days
Other            
Disclosure of geographical areas [line items]            
Invoice payment terms 30 days         30 days