v3.26.1
Financial Risk Management - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Provision for doubtful trade receivables $ 81    
Provision for other doubtful receivables 39    
Guarantees granted by third parties $ 984 $ 1,013 $ 945
Exchange rate to convert pesos to U.S. dollars variation 41.00%    
Percentage of variable rate financial loans to total liabilities 5.00%    
Working capital $ (966)    
Credit risk other financial assets national government and direct agencies accounts [member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Credit and investments with the National Government, direct agencies and companies with government participation $ 560    
Percentage of credit and investments with the National Government, direct agencies and companies with government participation 13.00%    
Interest rate risk [member] | SOFR [Member] | Bottom of range [member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Variable interest rate 0.90%    
Interest rate risk [member] | SOFR [Member] | Top of range [member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Variable interest rate 6.80%    
Liquidity risk [member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Amount available for liquidity $ 933    
Cash 198    
Other liquid financial assets 735    
Other investments freely available $ 262