v3.26.1
Revenue - Schedule of Revenue Disaggregation (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total $ 1,528,515,726 $ 1,672,672,906 $ 1,719,937,618
Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 1,498,872,792 1,654,706,708 1,694,490,673
Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 29,642,934 17,966,198 25,446,945
Crude oil      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 228,901,894 362,554,782 449,141,117
Gas      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 105,451,634 79,813,269 99,231,821
Refined petroleum products      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 1,054,722,661 942,219,765 972,023,857
Other      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 136,738,564 284,929,311 195,821,461
Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 2,700,973 3,155,779 3,695,941
Incentive for automotive fuels      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total     23,421
Exploration and Extraction      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 222,229,915    
Exploration and Extraction | Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 222,212,029    
Exploration and Extraction | Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 17,886    
Exploration and Extraction | Crude oil      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 222,124,461    
Exploration and Extraction | Gas      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 87,568    
Exploration and Extraction | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 17,886    
Exploration and Production      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   347,577,660 439,671,348
Exploration and Production | Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   347,550,312 439,640,623
Exploration and Production | Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   27,348 30,725
Exploration and Production | Crude oil      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   347,425,829 439,500,320
Exploration and Production | Gas      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   124,483 140,303
Exploration and Production | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   27,348 30,725
Industrial Processes      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 523,367,352    
Industrial Processes | Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 523,252,345    
Industrial Processes | Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 115,007    
Industrial Processes | Refined petroleum products      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 523,252,345    
Industrial Processes | Other      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 0    
Industrial Processes | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 115,007    
Industrial Transformation      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   629,650,342 751,381,382
Industrial Transformation | Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   613,694,202 727,928,413
Industrial Transformation | Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   15,956,140 23,452,969
Industrial Transformation | Gas      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   61,672,499 63,518,907
Industrial Transformation | Refined petroleum products      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   551,608,555 678,384,156
Industrial Transformation | Other      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   15,637,664 9,133,638
Industrial Transformation | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   731,624 321,260
Industrial Transformation | Incentive for automotive fuels      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total     23,421
Energy Transformation      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 74,651,572    
Energy Transformation | Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 47,709,611    
Energy Transformation | Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 26,941,961    
Energy Transformation | Gas      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 68,308,015    
Energy Transformation | Refined petroleum products      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 6,343,557    
Energy Transformation | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 0    
Logistics      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   414,098 1,380,704
Logistics | Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   414,098 1,380,704
Logistics | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   414,098 1,380,704
DPRLP      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 149,654,155 165,981,194 173,219,736
DPRLP | Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 149,654,155 165,980,709 173,219,486
DPRLP | Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 0 485 250
DPRLP | Gas      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 4,491,570 0 4,170,270
DPRLP | Refined petroleum products      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 32,973,805 41,058,106 1,350,729
DPRLP | Other      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 112,188,780 124,922,603 167,698,486
DPRLP | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 0 485 251
Trading Companies      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 533,925,873 508,733,095 335,304,583
Trading Companies | Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 532,377,490 506,782,844 333,396,095
Trading Companies | Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 1,548,383 1,950,251 1,908,488
Trading Companies | Crude oil      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 6,777,433 15,128,953 9,640,797
Trading Companies | Gas      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 32,564,481 18,016,287 31,402,341
Trading Companies | Refined petroleum products      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 492,134,809 349,553,104 292,288,972
Trading Companies | Other      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 900,767 124,084,500 63,985
Trading Companies | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 1,548,383 1,950,251 1,908,488
Corporate      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   1,045 856
Corporate | Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   1,045 856
Corporate | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   1,045 856
Other Operating Subsidiary Companies      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 24,686,859 20,315,472 18,979,009
Other Operating Subsidiary Companies | Products transferred at a point in time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 23,667,162 20,284,543 18,925,352
Other Operating Subsidiary Companies | Products and services transferred over the time      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 1,019,697 30,929 53,657
Other Operating Subsidiary Companies | Refined petroleum products      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 18,145    
Other Operating Subsidiary Companies | Other      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 23,649,017 20,284,544 18,925,352
Other Operating Subsidiary Companies | Services      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 1,019,697 30,928 53,657
United States      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 397,488,744 483,646,940 606,628,546
United States | Exploration and Extraction      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 118,323,954    
United States | Exploration and Production      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   183,779,007 296,391,618
United States | DPRLP      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 149,654,155 165,981,194 173,219,736
United States | Trading Companies      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 126,306,523 130,733,248 134,750,470
United States | Other Operating Subsidiary Companies      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 3,204,112 3,153,491 2,266,722
Other countries      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 51,841,159 108,129,563 91,769,600
Other countries | Exploration and Extraction      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 35,171,421    
Other countries | Exploration and Production      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   79,624,344 79,526,182
Other countries | Trading Companies      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 16,343,594 27,891,306 12,068,575
Other countries | Other Operating Subsidiary Companies      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 326,144 613,913 174,843
Europe      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 88,515,623 100,089,454 69,153,622
Europe | Exploration and Extraction      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 68,629,087    
Europe | Exploration and Production      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   84,022,478 63,582,520
Europe | Trading Companies      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 19,886,536 16,066,976 5,571,102
Local      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 990,670,200 980,806,949 952,362,429
Local | Exploration and Extraction      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 105,453    
Local | Exploration and Production      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   151,831 171,028
Local | Industrial Processes      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 523,367,352    
Local | Industrial Transformation      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   629,650,342 751,357,961
Local | Energy Transformation      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 74,651,572    
Local | Logistics      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   414,098 1,380,704
Local | Trading Companies      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total 371,389,220 334,041,565 182,914,436
Local | Corporate      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total   1,045 856
Local | Other Operating Subsidiary Companies      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total $ 21,156,603 $ 16,548,068 16,537,444
Incentive for automotive fuels      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total     23,421
Incentive for automotive fuels | Industrial Transformation      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total     $ 23,421