| Line Item | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2020 | Dec 31, 2019 | Dec 31, 2018 | Dec 31, 2017 |
|---|---|---|---|---|---|---|---|---|---|
| CONSOLIDATED STATEMENTS OF PROFIT OR LOSS AND OTHER COMPREHENSIVE INCOME | |||||||||
| REVENUES | |||||||||
| COST AND EXPENSES | |||||||||
| Operation, maintenance, and telecommunication service expenses | |||||||||
| Depreciation and amortization expenses | |||||||||
| Personnel expenses | |||||||||
| Interconnection expenses | |||||||||
| General and administrative expenses | |||||||||
| Marketing expenses | |||||||||
| Unrealized gain (loss) on changes in fair value of investments | |||||||||
| Gain (loss) on foreign exchange - net | |||||||||
| Other income (expense) - net | |||||||||
| OPERATING PROFIT | |||||||||
| Finance income-net | |||||||||
| Finance cost | |||||||||
| Share of profit (loss) of long-term investment in associates | |||||||||
| PROFIT BEFORE INCOME TAX | |||||||||
| Income tax expense | |||||||||
| Current | |||||||||
| Deferred | |||||||||
| INCOME TAX (EXPENSE) BENEFIT | |||||||||
| PROFIT FOR THE YEAR | |||||||||
| Other comprehensive income to be reclassified to profit or loss in subsequent periods: | |||||||||
| Foreign currency translation | |||||||||
| Changes in fair value of investments | |||||||||
| Share of other comprehensive income (loss) of long-term investment in associates | |||||||||
| Other comprehensive income not to be reclassified to profit or loss in subsequent periods: | |||||||||
| Defined benefit actuarial gain (loss) - net | |||||||||
| Other comprehensive income (loss) - net | |||||||||
| TOTAL COMPREHENSIVE INCOME FOR THE YEAR | |||||||||
| Profit for the year attributable to: | |||||||||
| Owners of the parent company | |||||||||
| Non-controlling interests | |||||||||
| PROFIT FOR THE YEAR | |||||||||
| Total comprehensive income for the year attributable to: | |||||||||
| Owners of the parent company | |||||||||
| Non-controlling interests | |||||||||
| TOTAL COMPREHENSIVE INCOME FOR THE YEAR | |||||||||
| BASIC EARNINGS PER SHARE | |||||||||
| Profit per share - (Basic) | |||||||||
| Profit per share - (Diluted) |