Employee Benefits - Expected Future Benefit Payments (Details) $ in Millions |
Dec. 31, 2025
MXN ($)
|
|---|---|
| Disclosure of defined benefit plans [line items] | |
| 2026 | $ 2,318 |
| 2027 | 1,618 |
| 2028 | 1,475 |
| 2029 | 1,623 |
| 2030 | 1,548 |
| 2031 to 2035 | 8,405 |
| Pension and Retirement Plans | |
| Disclosure of defined benefit plans [line items] | |
| 2026 | 1,804 |
| 2027 | 1,229 |
| 2028 | 1,108 |
| 2029 | 1,257 |
| 2030 | 1,182 |
| 2031 to 2035 | 6,544 |
| Seniority Premiums | |
| Disclosure of defined benefit plans [line items] | |
| 2026 | 483 |
| 2027 | 356 |
| 2028 | 332 |
| 2029 | 329 |
| 2030 | 326 |
| 2031 to 2035 | 1,619 |
| Post Retirement Medical Services | |
| Disclosure of defined benefit plans [line items] | |
| 2026 | 31 |
| 2027 | 33 |
| 2028 | 35 |
| 2029 | 37 |
| 2030 | 40 |
| 2031 to 2035 | $ 242 |