Long-term Payables – other - Details of Long-term Payables - Other, Which Consist of Payables Related to the Acquisition of Frequency Usage Rights (Detail) - KRW (₩) ₩ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of financial liabilities [line items] | ||
| Present value discount on long-term payables – other | ₩ (3,964) | ₩ (13,355) |
| Current portion of long-term payables – other | (368,572) | (367,765) |
| Carrying amount as of December 31 | 179,389 | 539,955 |
| Gross amount [member] | ||
| Disclosure of financial liabilities [line items] | ||
| Long-term payables – other | ₩ 551,925 | ₩ 921,075 |