v3.25.1
Income Taxes - Summary of Major Components of Income Tax Expense (Detail) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Current tax expense (income) and adjustments for current tax of prior periods [abstract]      
Current year $ 9,569 $ 7,604 $ 5,658
Deferred tax expense (income) [abstract]      
Origination and reversal of temporary differences 394 (44) 860
Utilization (benefit) of tax losses recognized 1,805 1,221 29
Total deferred tax income expense 2,199 1,177 889
Total income tax expense in consolidated net income 11,768 8,781 6,547
Mexico      
Current tax expense (income) and adjustments for current tax of prior periods [abstract]      
Current year 6,918 5,474 3,522
Deferred tax expense (income) [abstract]      
Origination and reversal of temporary differences (1) (322) 197
Utilization (benefit) of tax losses recognized 1,019 238 (4)
Total deferred tax income expense 1,018 (84) 193
Total income tax expense in consolidated net income 7,936 5,390 3,715
Foreign      
Current tax expense (income) and adjustments for current tax of prior periods [abstract]      
Current year 2,651 2,130 2,136
Deferred tax expense (income) [abstract]      
Origination and reversal of temporary differences 395 278 663
Utilization (benefit) of tax losses recognized 786 983 33
Total deferred tax income expense 1,181 1,261 696
Total income tax expense in consolidated net income $ 3,832 $ 3,391 $ 2,832