Wells, Pipelines, Properties, Plant And Equipment, Net - Impairment of Fixed Assets (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]
Total	$ 154,649,400	$ 269,468,559
Salamanca Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	38,826,331	52,973,936
Cadereyta Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	38,491,000	49,608,678
Salina Cruz Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	20,203,733	51,877,280
Tula Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	18,074,762	46,202,340
Cangrejera Ethylene Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	11,278,426	8,758,887
Nuevo Pemex Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	8,136,516	8,412,828
Ciudad Pemex Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	6,358,136	13,566,516
Cactus Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	5,301,464	7,412,437
Burgos Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	3,457,364	1,972,249
Independencia Petrochemical Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	1,899,481	4,382,873
La Venta Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	977,988	1,471,999
Coatzacoalcos Gas Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	921,077	1,764,690
Morelos Ethylene Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	538,152	923,623
Pajaritos Ethylene Processor Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	184,970	0
Madero Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	0	14,453,809
Minatitlán Refinery
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	0	4,184,019
Cosoleacaque Petrochemical Complex
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Total	$ 0	$ 1,502,395