Taxes - Net Deferred Income Tax Asset Rollforward (Details) - MXN ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of income taxes [Line Items] | |||
| Balance at the beginning of the period | $ (18,219) | $ (20,227) | $ (20,067) |
| Deferred tax provision for the period | (2,933) | 2,055 | (5,960) |
| Deferred tax income net recorded in share of the profit of equity method accounted investees | 0 | 0 | 2 |
| Acquisition of subsidiaries | 0 | 0 | 1,871 |
| Unrealized (gain) on cash flow hedges | (1,035) | 801 | (594) |
| Exchange differences on translation of foreign operations | (93) | 18 | 1,002 |
| Remeasurements of the net defined benefit liability | (368) | (399) | 405 |
| Retained earnings of equity method accounted investees | 0 | 0 | 954 |
| Restatement effect of the period and beginning balances associated with hyperinflationary economies | (82) | (803) | 121 |
| Balance at the end of the period | (22,730) | (18,219) | (20,227) |
| Discontinued operations | |||
| Disclosure of income taxes [Line Items] | |||
| Related discontinued operations | $ 336 | $ 2,039 | |