Wells, Pipelines, Properties, Plant and Equipment, Net - Summary of Values in Use for CGU Impairment or Reversal (Pemex Exploration and Production) (Detail) - MXN ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	$ 149,726,546	$ 67,094,802
Exploration and Extraction
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	226,185,162	252,416,494
Exploration and Extraction \| Aceite Terciario del Golfo
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	70,237,018	29,111,363
Exploration and Extraction \| Tsimin Xux
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	37,745,764	24,306,763
Exploration and Extraction \| Ogarrio Magallanes
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	33,187,237	26,386,676
Exploration and Extraction \| Antonio J. Bermúdez
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	31,736,320	22,206,705
Exploration and Extraction \| Tamaulipas Constituciones
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	16,056,491	5,042,725
Exploration and Extraction \| Cantarell
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	12,866,303	21,757,912
Exploration and Extraction \| Poza Rica
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	10,796,596	6,038,332
Exploration and Extraction \| Arenque
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	8,114,141	2,742,274
Exploration and Extraction \| Lakach
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	2,598,813	0
Exploration and Extraction \| Cuenca de Macuspana
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	1,800,121	574,732
Exploration and Extraction \| Ayin-Alux
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	1,046,358	4,342,218
Exploration and Extraction \| Chuc
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	0	55,399,694
Exploration and Extraction \| Crudo Ligero Marino
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	0	32,228,351
Exploration and Extraction \| Ixtal - Manik
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	0	13,059,588
Exploration and Extraction \| Burgos
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	0	2,640,180
Exploration and Extraction \| Santuario El Golpe
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	0	3,451,197
Exploration and Extraction \| Cárdenas-Mora
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	$ 0	$ 3,127,784

Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]