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Commitments and Contingencies, Provisions and Contingencies (Details) - 12 months ended Dec. 31, 2024 R$ in Thousands, $ in Thousands | MXN ($) Intallment Subsidary | BRL (R$) | BRL (R$) Intallment Subsidary
--- | --- | --- | ---
Provisions and Contingencies [Abstract] |  |  |
Legal proceedings provision | $ 6,105,484 |  | R$ 1,865,326
Brazilian Tax Matters [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 122,726,478 |  | 37,494,960
Legal proceedings provision | 19,766,355 |  | 6,038,947
Unpaid installation inspection | 20,243,236 |  | 6,184,642
Value added tax [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 40,882,104 |  | 12,490,156
Legal proceedings provision | 4,099,157 |  | 1,252,360
Social Contribution [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 5,721,800 |  | 1,748,104
Legal proceedings provision | 3,381,922 |  | 1,033,233
Corporate Income Tax [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 5,721,800 |  | 1,748,104
Legal proceedings provision | 3,381,922 |  | 1,033,233
Social Integration Program [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 17,270,686 |  | 5,276,479
Legal proceedings provision | 5,688,116 |  | 1,737,813
Social Security Financing [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 17,270,686 |  | 5,276,479
Legal proceedings provision | 5,688,116 |  | 1,737,813
Offset's Rejections of Tax Credits [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 7,160,049 |  | 2,187,513
Legal proceedings provision | 103,818 |  | 31,718
Social Contributions Over Profits [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 7,160,049 |  | 2,187,513
Legal proceedings provision | 103,818 |  | 31,718
Fund for Universal Telecommunication Services [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 13,583,389 |  | 4,149,949
Legal proceedings provision | 1,484,725 |  | 453,608
Telecommunications Technology Development Fund [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 6,134,007 |  | 1,874,040,000
Legal proceedings provision | 452 |  | 138,000
Nonpayment of Services Tax [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 1,999,637 |  | 610,922
Legal proceedings provision | 140,991 |  | 43,075
IRRF and CIDE Taxes [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 4,718,515 |  | 1,441,584
Legal proceedings provision | 130,936 |  | 40,003
Public Radio Broadcasting [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Aggregate tax contingencies | 4,800,645 |  | 1,466,676
Legal proceedings provision | $ 4,464,836 |  | R$ 1,364,081
Anatel [Member] |  |  |
Provisions and Contingencies [Abstract] |  |  |
Number of subsidiaries | Subsidary | 2 |  | 2
Inflation related adjustments applicable to percentage of concessions price | 60.00% | 60.00% |
Number of equal annual installments | Intallment | 3 |  | 3
Monetary corrections in regulatory matters | $ 15,913,938 | R$ 4,861,970 |

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