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Commitments - Additional Information (Detail)
T in Millions, MT in Millions
 1 Months Ended 12 Months Ended
Oct. 01, 2019
Apr. 30, 2016
MWh
Feb. 28, 2010
Dec. 31, 2024
USD ($)
Employees
T
MWh
MT
$ / MWh
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Mar. 31, 2024
USD ($)
Oct. 31, 2022
USD ($)
Disclosure of Commitments and Contingencies [Line Items]                
Acquired energy usage period   20 years            
Self-insured health care benefits       $ 72,000,000 $ 72,000,000 $ 64,000,000    
Cost per megawatt hour | $ / MWh       25.375        
Emissions of Co2 gross | MT       50        
Percentage of Co2 released directly related to production process       63.00%        
Percentage of Co2 released directly related to electric consumption       6.00%        
Percentage of Co2 released through activity of supply and transportation       31.00%        
Loss from catastrophes       $ 9,000,000 3,000,000 1,000,000    
Executive Variable Compensation [Member]                
Disclosure of Commitments and Contingencies [Line Items]                
Precease of decrease in annual executive variable compensation       (10.00%)        
Precease of increase in annual executive variable compensation       10.00%        
Number of employees | Employees       4,500        
Two Thousand and Twenty Year Baseline [Member]                
Disclosure of Commitments and Contingencies [Line Items]                
Percentage reduction of Co2 emissions       25.00%        
Percentage decrease in transportation emissions       30.00%        
Percentage decrease of scope 3 emissions per ton of purchased fuels       40.00%        
Percentage decrease of absolute scope 3 emissions from the use of traded fuels       42.00%        
Nineteen Thousand And Ninty Year Baseline [Member]                
Disclosure of Commitments and Contingencies [Line Items]                
Percentage reduction of Co2 emissions       47.00%        
Scope One [Member]                
Disclosure of Commitments and Contingencies [Line Items]                
Percentage reduction of Co2 emissions       31.00%        
Scope Two [Member]                
Disclosure of Commitments and Contingencies [Line Items]                
Percentage reduction of Co2 emissions       58.00%        
Scope Three [Member]                
Disclosure of Commitments and Contingencies [Line Items]                
Percentage reduction of Co2 emissions       0.00%        
Commitement With Six Vendors For Back Office Services [Member] | Later than five years and not later than seven years [member]                
Disclosure of Commitments and Contingencies [Line Items]                
Annual Commitement With Vendors Value       $ 60,000,000        
MX [Member] | Energy Financial Hedge [Member]                
Disclosure of Commitments and Contingencies [Line Items]                
Period of hedging agreement 20 years              
Electric energy expected consumption | MWh       400,000        
Percentage increase in the price of the commodity       1.50%        
Proceeds payments from financial hedge       $ 5,000,000 $ 3,000,000 $ 3,000,000    
Bottom of range [member]                
Disclosure of Commitments and Contingencies [Line Items]                
Percentage of Co2 released       5.00%        
Top of range [member]                
Disclosure of Commitments and Contingencies [Line Items]                
Stop-loss limits value under medical assistance       $ 550,000        
Percentage of Co2 released       8.00%        
Top of range [member] | Employees [Member]                
Disclosure of Commitments and Contingencies [Line Items]                
Stop-loss limits value under medical assistance       $ 2,500,000        
Ventikas [member]                
Disclosure of Commitments and Contingencies [Line Items]                
Estimated annual cost       24,000,000        
Combined generation capacity | MWh   252            
EURUS [member]                
Disclosure of Commitments and Contingencies [Line Items]                
Acquired energy usage period     20 years          
Estimated annual cost       77,000,000        
Installed capacity     250          
Termoelectrica del Golfo [member]                
Disclosure of Commitments and Contingencies [Line Items]                
Estimated annual cost       $ 87,000,000        
Combined volume allocate to TEG and other energy producer | T       1.2        
European Union Emissions [Member] | Forward purchase commitments [member]                
Disclosure of Commitments and Contingencies [Line Items]                
Annual Commitement With Vendors Value               $ 55,000,000
Purchase Commitments by an Entity             $ 1,800,000  
Purchase Price of an Entity             $ 157,000,000