v3.26.1
Equity (Deficit) - Summary of Government Contributions to Petroleos Mexicanos through the Ministry of Energy (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 24, 2025
Nov. 27, 2025
Oct. 27, 2025
Sep. 26, 2025
Sep. 25, 2025
Aug. 25, 2025
Aug. 11, 2025
Jul. 22, 2025
Jul. 01, 2025
Jun. 02, 2025
May 02, 2025
Apr. 21, 2025
Mar. 19, 2025
Feb. 19, 2025
Feb. 07, 2025
Jan. 10, 2025
Dec. 31, 2026
Dec. 31, 2025
Federal budget                                    
Disclosure of government contributions [line item]                                    
Total                                 $ 263,476,300 $ 395,313,191
Strengthening of Financial Position One, January 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants                               $ 20,382,300    
Strengthening of Financial Position Two, January 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants                               $ 1,803,442    
Strengthening of Financial Position | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants             $ 3,548,535 $ 10,511,768 $ 5,256,579 $ 3,700,830 $ 2,905,392 $ 7,930,143 $ 19,284,494 $ 23,532,337 $ 15,000,000      
Strengthening of Financial Position One, August 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants           $ 3,422,870                        
Strengthening of Financial Position Two, August 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants           1,130,818                        
Strengthening of Financial Position Three, August 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants           $ 1,084,248                        
Strengthening of Financial Position One, September 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants       $ 1,862,240 $ 145,783,855                          
Strengthening of Financial Position Two, September 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants       1,616,119 $ 107,984,484                          
Strengthening of Financial Position Three, September 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants       $ 3,360,425                            
Strengthening of Financial Position One, October 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants     $ 5,302,977                              
Strengthening of Financial Position Two, October 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants     $ 121,037                              
Strengthening of Financial Position One, November 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants   $ 1,023,555                                
Strengthening of Financial Position Two, November 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants   2,220,543                                
Strengthening of Financial Position Three, November 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants   $ 2,342,950                                
Strengthening of Financial Position One, December 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants $ 2,995,311                                  
Strengthening of Financial Position Two, December 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants 821,577                                  
Strengthening of Financial Position Three, December 2025 | Petróleos Mexicanos                                    
Disclosure of government contributions [line item]                                    
Proceeds from government grants $ 384,362