Assets subject to lien and assets acquired through foreclosures - Assets subjected to lien (Parenthetical) (Details) - KRW (₩) ₩ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure Of Collateral [Abstract] | ||
| Threshold Limit Of Pledged Amount | ₩ 17,008 | ₩ 339 |