Taxes - Tax Loss Carryforwards Rollforward (Details) - MXN ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Taxes [Abstract] | |||
| Tax loss carryforwards, beginning | $ 31,292,000,000 | $ 42,813,000,000 | |
| Derecognized | (6,605,000,000) | (8,874,000,000) | |
| Increase | 16,559,000,000 | 6,115,000,000 | |
| Usage of tax losses | (2,755,000,000) | (10,747,000,000) | |
| Translation effect of beginning balances | 586,000,000 | 1,985,000,000 | |
| Tax loss carryforwards, ending | 39,077,000,000 | 31,292,000,000 | $ 42,813,000,000 |
| Taxes withheld on payment of dividends | 0 | 0 | 0 |
| Temporary differences for which tax liability not recognized | 34,730,000,000 | 31,261,000,000 | 19,307,000,000 |
| Increase (decrease) through loss of control of subsidiary, deferred tax liability (asset) | $ 0 | $ 1,472,000,000 | $ 0 |