v3.26.1
Subsidiary Entities and Subsidiary Companies - Additional Information (Detail)
12 Months Ended
Dec. 31, 2025
Disclosure of subsidiaries [line items]  
Proportion of ownership interest held 100.00%
PMI CIM  
Disclosure of subsidiaries [line items]  
Proportion of voting rights held in subsidiary 98.33%
COMESA  
Disclosure of subsidiaries [line items]  
Proportion of voting rights held in subsidiary 60.00%