Income Tax Expense - Schedule of Gross Deferred Tax Balances (Details) - KRW (₩) ₩ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Major components of tax expense (income) [abstract] | ||
| - Deferred tax assets to be recovered after more than 12 months | ₩ 1,773 | ₩ 2,784 |
| - Deferred tax assets to be recovered within 12 months | 7,671 | 5,725 |
| Net deferred tax assets | 9,444 | 8,509 |
| - Deferred tax liabilities to be recovered after more than 12 months | (871) | (1,019) |
| - Deferred tax liabilities to be recovered within 12 months | (3,100) | (3,167) |
| Net deferred tax liabilities | (3,971) | (4,186) |
| Deferred tax assets (liabilities), net | ₩ 5,473 | ₩ 4,323 |