Wells, Pipelines, Properties, Plant and Equipment, Net - Summary of Net Impairment by CGUs (Pemex Industrial Transformation) (Detail) - Industrial Transformation - MXN ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	$ (78,049,865)	$ (25,568,713)
Tula Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(33,661,647)	(13,816)
Minatitlán Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(16,652,058)	4,615,400
Salina Cruz Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(7,270,800)	0
Madero Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(6,369,734)	(10,125,589)
Cosoleacaque Petrochemical Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(5,716,817)	(5,096,027)
Gas Arenque Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(5,389,475)	0
Cactus Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(1,670,960)	(4,592,823)
Morelos Petrochemical Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(643,817)	(3,093,360)
Coatzacoalcos Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(576,742)	(2,051,842)
Ethylene Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(424,382)	0
La Venta Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(396,654)	(541,766)
Matapionche Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(163,389)	(498,212)
Pajaritos Petrochemical Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	(40,901)	0
Cangrejera Petrochemical Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	0	(61,296)
Salamanca Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	393	5,750,279
Arenque Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	1,774	(159,571)
Poza Rica Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	137,833	(646,813)
Cangrejera Ethylene Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	312,331	(771,161)
Nuevo Pemex Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment, net	$ 475,180	$ (8,282,116)

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